Contents

Mitsubishi E60 Numerical Control Interface Manual V2 PDF

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Summary of Content for Mitsubishi E60 Numerical Control Interface Manual V2 PDF

MELSEC is registered trademark of Mitsubishi Electric Corporation. Other company and product names that appear in this manual are trademarks or registered trademarks of the respective companies.

Precautions for Safety Always read the specifications issued by the machine maker, this manual, related manuals and enclosed documents before installation, operation, programming, maintenance or inspection to fully understand the conditions described within and to ensure correct use. Understand this numerical controller, safety items and precautions before using the unit. This manual ranks the safety precautions into "Danger", "Warning" and "Caution".

When the user may be subject to imminent fatalities or major injuries if handling is mistaken. When the user may be subject to fatalities or major injuries if handling is mistaken. When the user may be subject to injuries or when physical damage may occur if handling is mistaken.

Note that even items ranked as " CAUTION", may lead to major results depending on the situation. In any case, important information that must always be observed is described.

DANGER

There are no "Danger" items in this manual.

WARNING

There are no "Warning" items in this manual.

CAUTION

1. Items related to product and manual

The manual issued by the machine maker has a priority over this manual regarding the items described as "restrictions" and "usable state".

Please interpret items not listed in this manual as "not possible". This manual assumes that all option functions are provided. Confirm the specifications issued by the machine maker before using this unit.

Some screens and functions may differ or may not be usable depending on the NC system version.

Setting incorrect value may cause machines illegal operation or driving out of control. Pay enough attention at programming.

DANGER

CAUTION

WARNING

CAUTION

2. Items related to programming

If 5 CONVT and INPUT are not pressed after creating, correcting, adding or inserting a ladder circuit, the created ladder circuit will be lost.

When using this function, the PLC can be put into a STOP status by setting the rotary switch NCSYS on the lower part of the control unit to No. 1 (STOP).

An emergency stop will result when the user PLC is stopped with this function, in the same manner as the method using the rotary switch NCSYS. First carry out an emergency stop using the dedicated emergency stop button, etc., then put the user PLC in an emergency stop status.

CONTENTS

1 Outline...............................................................................................................................1 2 System Configuration .....................................................................................................2

2.1 PLC Development Tool...............................................................................................2 2.2 General Configuration.................................................................................................3 2.3 Setting and Display Unit .............................................................................................4 2.4 System Selection ........................................................................................................5

2.4.1 Parameter setting................................................................................................5 3 Creating Ladder Circuit and Monitor Operation.........................................................16

3.1 Creating the File........................................................................................................23 3.1.1 Registering the edit file......................................................................................23 3.1.2 User PLC RUN/STOP by setting and display unit operation............................24

3.2 Writing the Circuit......................................................................................................25 3.2.1 Creating the circuit ............................................................................................25 3.2.2 Modifying the existing circuit .............................................................................26 3.2.3 Adding the circuit block .....................................................................................27

3.3 Reading the Circuit ...................................................................................................29 3.3.1 Reading the circuit by step number ..................................................................29 3.3.2 Reading the circuit by device number ..............................................................32 3.3.3 Reading the circuit by contact or coil number...................................................33 3.3.4 Reading the circuit by instruction......................................................................34 3.3.5 Reading the circuit by END instruction .............................................................36 3.3.6 Circuit read function ..........................................................................................37

3.4 Inserting the Circuit ...................................................................................................38 3.4.1 Inserting the circuit symbol ...............................................................................38

3.5 Deleting the Circuit....................................................................................................42 3.5.1 Deleting the circuit block ...................................................................................42 3.5.2 Deleting the circuit symbol ................................................................................45

3.6 Circuit Extension Function ........................................................................................48 3.6.1 Extension circuit operation examples ...............................................................49 3.6.2 Error message...................................................................................................57 3.6.3 Relationship between number of returns and circuit length .............................59

3.7 Monitoring the Ladder Circuit....................................................................................60 3.7.1 Monitoring the circuit .........................................................................................62 3.7.2 Freezing the screen at monitor stop trigger point.............................................64 3.7.3 Monitoring the registered device.......................................................................66 3.7.4 Monitoring the current value in decimal hexadecimal notation ........................68

4 Precautions for PLC Development Environment of GX Developer .........................69

4.1 Starting......................................................................................................................69 4.2 Onboard Initial Menu.................................................................................................69 4.3 PLC File Information + RUN/STOP Changeover Screen ........................................70 4.4 Restrictions for Circuit Display..................................................................................71

5 Messages.........................................................................................................................72 6 Alarm Messages Related to PLC ..................................................................................74

1. Outline

- 1 -

1. Outline

This manual is created for development of user PLC on the control unit. PLC operation performed on the control unit is called onboard operation. The main functions of the onboard operation are listed below. (1) Creation of new ladder files (2) Edit of existing ladder circuits (read, write, insertion, and deletion) (3) Ladder circuit monitor

User PLC can also be developed by using a personal computer without using the onboard unit. (Optional software will be required.)

Mitsubishi Integrated FA Software MELSOFT GX Series "GX Developer"

The related documents are listed below.

EZMotion-NC E60/E68 Series PLC Interface Manual IB-1500176(ENG) EZMotion-NC E60/E68 Series PLC Programming Manual (Ladder section with MELSEC tool) IB-1500178(ENG) EZMotion-NC E60/E68 Series PLC Development Software Manual (MELSEC Tool Section) IB-1500177(ENG) Note) PLC : Programmable Logic Controller

2. System Configuration 2.1 PLC Development Tool

- 2 -

2. System Configuration 2.1 PLC Development Tool

In addition to the onboard, the user PLC can be developed using the development tool operated with the personal computer. (1) MELSEC PLC Development Tool "GX Developer"

The GX Developer is a programming software package for the Programmable Controller MELSEC Series produced by Mitsubishi Electric Corporation. The User PLC Ladder for EZMotion-NC E60/E68 can be developed with the same operation as the MELSEC Series. Note that some of the MELSEC Series specific functions cannot be used. For the details, refer to the "PLC Development Software Manual (MELSEC Tool Section) (IB-1500177(ENG))".

When creating the user PLC using the GX Developer and editing that with the onboard operation, it is necessary to set the parameter in the CNC side. For the details, refer to "2.4 System Selection".

2. System Configuration 2.2 General Configuration

- 3 -

2.2 General Configuration

The system configuration when developing the onboard is shown below.

R S232C

Setting and Display Unit

Base I/O Unit

The ladder is developed using the setting and display unit. (Onboard development)

To connector RS-232C

Personal computer Used for ladder development, creating message, ladder monitor and saving data.

General printer

Ladder editing, ladder monitor and PLC RUN/STOP, etc. A new development is possible with the personal computer.

Up/downloading is carried out with the personal computer's development tool.

RS- 2C

tting and Display Unit

se I/O Unit

Note) Refer to this manual for editing using the setting and display unit (onboard editing), and refer to the "PLC Development Software Manual (MELSEC Tool Section) (IB-1500177(ENG))" for development using the personal computer.

2. System Configuration 2.3 Setting and Display Unit

- 4 -

2.3 Setting and Display Unit

The following is a representative example of a setting and display unit used onboard.

MONITOR TOOL PARAM

EDIT MDI

DIAGN IN/OUT SFG F0

O A

N B

G C

X U

Y V

Z W

F E

D L

H !

P I

Q J

R K

M (

S )

T [

EOB ]

= #

/ *

- +

. ,

7 8 9

4 5 6

1 2 3

0 SP

DELETE INS

C.B CAN

SHIFT

INPUT CALCRESET

?

READY

Page keys

Menu keys

Reset key Cursor keys

Data correction keys

Input key (calculation)

Shift key

Alphabetic character, numerical character, and symbol keys READY LED

Setting keys Function selection keys

(Note 1) To input the alphabetic characters or symbols on the lower right of the alphabetic character and symbol keys, press SHIFT

, then press the corresponding key.

(Example) "A" is input by pressing SHIFT , O A .

2. System Configuration 2.4 System Selection

- 5 -

2.4 System Selection 2.4.1 Parameter setting

The parameters for user PLC development with the control unit and to operate the user PLC are explained. The parameters are set in "SETUP PARAMETER" on the BIT SELECTION screen. Refer to the control unit instruction manual for information about the BIT SELECTION screen handling method.

(1) PLC environment selection

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 # (6451) (0 0 0 0 0 0 0 0 )

1:GX Developer

0:GX Developer 1:GX Developer

0: Not used for EZMotion-NC E60/E68 Mode

communication invalid communication valid

No.6451 is used.

Data Bit<-

(Note) Turn the CNC power OFF after the parameter setting. Parameters are valid after the power is turned ON again.

Depending on the setting of the bit selection #6451 bits, the operation is performed below. (a) PLC environment selection

Choose the GX Developer mode (bit4=1). (Note) The onboard will not start if the ladder format stored in the CNC is other than the GX

Developer. Bit 4 = 0

Not used for EZMotion-NC E60/E68. Bit 4 = 1

The PLC development environment of the GX Developer.

(b) GX Developer communication usage selection

Choose to use the serial port in GX Developer or in the other functions. Bit 5 = 0

The serial port is not used for the communication with the GX Developer. Bit 5 = 1

The serial port is used for the communication with the GX Developer. Note that the onboard will not start regardless of the bit 4 setting.

(c) Operation state depending on each bit selection

Bit 4 Bit 5 Operation state

0 - Onboard does not starts. 1 0 PLC environment for GX Developer (When using the onboard)

1 1 PLC environment for GX Developer (When using communication) Onboard does not starts.

2. System Configuration 2.4 System Selection

- 6 -

(2) Onboard operation on

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6451 ) Data ( 0 0 0 0 0 0 0 1 )

0 : Onboard operation off 1 : Onboard operation on 0 : Onboard editing possible 1 : Onboard editing not possible

Operation is performed depending on how bit selection parameter # 6451 bits are set:

(a) Onboard operation on Bit 0 = 0 : Onboard operation is off. Nothing will display even if F0 is on.

Bit 0 = 1 : Screen is displayed for user PLC development, ladder monitor and ROM write, etc.

(b) Onboard editing validity

Bit 2 = 0 : Onboard ladder editing is possible. Bit 2 = 1 : Onboard ladder editing is not possible. Note that ladder monitoring is possible.

Use of parameter #6451

2. System Configuration 2.4 System Selection

- 7 -

(3) PLC timer and counter screen on

Values can be set in timers (T) and counters (C) used with user PLC (ladder) on the setting and display unit for use them as variable timers or variable counters.

Note : The values of the fixed timer and fixed counter cannot be set from the setting and display unit.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6449 ) Data ( 0 0 0 0 0 0 )

0 : Timer (T) setup value screen on 1 : Timer (T) setup value program on 0 : Counter (C) setup value screen on 1 : Counter (C) setup value program on

Operation is performed depending on how bit selection parameter #6449 bits 0 and 1 are set:

Bits 0 and 1 = 0 The values set in the PLC TIMER and PLC COUNTER screens SETUP PARAMETERS are used as the timer and counter setup values.

Bits 0 and 1 = 1 The programmed constant K values are used as the timer and counter setup values. At the time, the programmed constant K values of the timers and counters are also displayed on the PLC TIMER and PLC COUNTER screens of setup parameters. Thus, even if bits 0 and 1 are set to 11, the valid setup values can be checked on the screens in the PLC-RUN state. However, no values can be set. If a value is set, the message "E05 NOT ACCEPTABLE" is displayed.

When bits 0 and 1 are set to 0, the constant K values are ignored and the values set on the screens become valid. However, since K* cannot be omitted in programming, any numeric value must be entered in K* for programming.

Use of parameter #6449

2. System Configuration 2.4 System Selection

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(4) Integrated timer retention and counter retention

This parameter is set to retain the current values of the integrated timer (T) and counter (C) even if the NC power is turned off.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6449 ) Data ( 0 0 0 0 1 1 0 0 )

7 6 5 4 3 2 1 0 Bit # ( 6452 ) Data ( 0 0 0 0 1 1 0 0 )

Bits 2 and 3 = 0

The current values of the integrated timer and the counter are reset to 0 when the NC power is turned off.

Bits 2 and 3 = 1 The current values of the integrated timer and the counter are not reset to 0 even if the NC power is turned off. The values before the power is turned off are retained.

Integrated timer (T232 to T239) and counter (C0 to C23) use #6449.

0 : Integrated timer (T232 to T239) retention off (no retention)

1 I t t d ti (T232 t T239) t ti 0 : Counter (C0 to C23) retention off (no retention) 1 : Counter (C0 to C23) retention on

Integrated timer (T240 to T255) and counter (C24 to C127) use #6452.

0 : Integrated timer (T240 to T255) retention off (not retention) 1 : Integrated timer (T240 to T255) retention on

0 : Counter (C24 to C127) retention off (no retention) 1 : Counter (C24 to C127) retention on

2. System Configuration 2.4 System Selection

- 9 -

(5) Control unit thermal alarm ON

The self-diagnostic function detects an error in the controller temperature, etc. The function can be enabled or disabled by a parameter.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6449 ) Data ( 1 0 0 0 0 0 0 0 )

(a) Control unit thermal alarm ON (bit 7)

Bit 7 = 0 Overheat of the controller is neither detected nor posted (by special relay SM16) to the PLC.

Bit 7 = 1 If the abnormal temperature detector circuit in the controller operates, error message "Z53 TEMP. OVER 0001" is displayed in the setting and display unit. It prevents automatic operation start after the reset state. Also, special relay SM16 is turned on to post the error information to the PLC. The error contents can be checked by referring to file register R57.

File register R57 F E D C B A 9 8 7 6 5 4 3 2 1 0

Bit 0: Controller overheat

Use of parameter #6449

0 : Control unit thermal alarm detection off 1 : Control unit thermal alarm detection on

2. System Configuration 2.4 System Selection

- 10 -

(6) Alarm message on

This parameter is set to validate the interface of alarm message display created with user PLC.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6450 ) Data ( 0 0 0 0 0 0 1 )

For the details on the alarm message display method, refer to the "PLC Programming Manual (Ladder section with MELSEC tool) (IB-1500178(ENG))".

(7) Operator message on

This parameter is used to validate the interface of operator message display created with user PLC.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6450 ) Data ( 0 0 0 0 0 1 0 0 )

For the details on the operator message display method, refer to the "PLC Programming Manual (Ladder section with MELSEC tool) (IB-1500178(ENG))".

Use of parameter #6450

0 : Alarm message off 1 : Alarm message on

0 : F method interface 1 : R method interface

Use of parameter #6450

0 : Operator message off 1: Operator message on

2. System Configuration 2.4 System Selection

- 11 -

(8) Message display on all screens

The first 18 characters of an alarm message or operator message can be displayed in the operation status mode/alarm display area. This function enables either an alarm or operator message that is generally displayed only on the alarm diagnostic screen to be displayed on almost all screens (those with an alarm display area).

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6450 ) Data ( 0 0 1 0 0 0 0 )

Depending on the settings of bits 4 and 5 of bit selection parameter #6450, the CNC operates as follows:

Bit 4 = 0

Alarm and operator messages are displayed only on the alarm diagnostic screen but not on all screens.

Bit 4 = 1 The first 18 characters of either alarm or operator messages are displayed in the operation status mode/alarm display area. Whether alarm or operator messages are to be displayed is determined by bit 5 in #6450. Regardless of the setting of this parameter, the alarm diagnostic screen displays alarm and operator messages in full.

Bit 5 = 0 Alarm messages are displayed when "message display on all screens" is selected.

Bit 5 = 1 Operator messages are displayed when "message display on all screens" is selected.

7 6 5 4 3 2 1 0 Bit Display alarm messages on all screens. 0 1 0/1 0/1 1 Display operator messages on all screens. 1 1 1 0/1 0/1

Use of parameter #6450

0: Display alarm messages on all screens. 1: Display operator messages on all screens.

0 : Message all screen display off 1: Message all screen display on

2. System Configuration 2.4 System Selection

- 12 -

(9) Alarm message selection The one of the following two data can be selected and displayed for the message data. Data created with the user PLC (stored in the user PLC area) External alarm message data input with the text format (stored in the area different from the user

PLC) [BIT SELECTION PARAMETER screen]

#(6450) Data 0 1 0 0 0 0 0 0 7 6 5 4 3 2 1 0 <- Bit

No.6450 is used.

0: Alarm message in user PLC display 1: External alarm message display

Depending on the setting of bit selection #6450 bits, the operation is performed below. Bit 6 = 0

The PLC alarm message in the user PLC is displayed. Bit 6 = 1

The external alarm message input with the text format is displayed. (10) Message language change code

This parameter is set to change display language (message division) when message data is displayed on the screen.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6453 ) Data ( 0 0 0 0 0 0 0 0 )

Bit No.

2 1 0 Remarks

0 0 0 Language 1 is displayed. 0 0 1 Language 2 is displayed. 0 1 0 Language 3 is displayed. 0 1 1 Language 4 is displayed. 1 0 0 Language 5 is displayed. 1 0 1 Language 6 is displayed. 1 1 0 Language 7 is displayed.

#6453

1 1 1 Language 8 is displayed.

(11) High-speed input and output specification

These parameters are set to specify input/output signals required for input/output processing synchronized with high-speed processing when high-speed processing of user PLC is performed. The input signals are specified in bit selection parameters #6457 and #6458 and the output signals are specified in #6460 and #6461. Refer to the "PLC Programming Manual (Ladder section with MELSEC tool) (IB-1500178(ENG))" for details of correspondence between the parameters and input/output devices X and Y, etc.

Use of parameter #6453 Message language change code

2. System Configuration 2.4 System Selection

- 13 -

(12) NC alarm 4 output invalid (parameter for standard PLC)

This parameter selects whether to include the NC alarm 4 in the NC alarm output 1 during the standard PLC specifications.

[BIT SELECTION PARAMETER screen]

7 6 5 4 3 2 1 0 Bit # ( 6469 ) Data ( 0 0 0 0 0 0 0 1 )

Bit 0 = 0 When using the standard PLC specifications without the additional remote IO, there is no output point for the NC alarms 2, 3 and 4. Thus, when the additional DIO card is not used, the logical sum of NC alarm 1, 2, 3 and 4 are output in NC alarm 1 output. This parameter selects whether the NC alarm 4 that indicates an operation alarm is included at that time. (Bit 0 = 0 includes the NC alarm 4.)

Bit 0 = 1 The operation error NC alarm 4 is not included in the NC alarm 1 output explained in Bit 0 = 0.

Use of parameter #6469

0 : Include NC alarm 4 in alarm output 1: Do not include NC alarm 4 in alarm output

2. System Configuration 2.4 System Selection

- 14 -

Table: "Contents of bit selection parameters #6449 to #6496"

Symbol name

7 6 5 4 3 2 1 0

0 #6449

R2924 L

Controller thermal alarm on

Reserved - Counter C retention

Integrated timer T retention

PLC counter program on

PLC counter program on

1 0

1

#6450 R2924 H

External alarm message display

Alarm/ operator change

Full screen display of message

- Operator message on

R method

F method

Alarm message on

2

#6451 R2925 L - -

GX Developer communi- cation on

PLC development environment selection

Onboard editing not possible

- Onboard on

3

#6452 R2925 H -

Counter (fixed) retention

Integrated timer (fixed) retention

-

4

#6453 R2926 L - - - - - Message language change code

5

#6454 R2926 H

6

#6455 R2927 L - - - - - - - -

7

#6456 R2927 H - - - - - - - -

8

#6457 R2928 L

9

#6458 R2928 H

A

#6459 R2929 L

B

#6460 R2929 H

C

#6461 R2930 L

D

#6462 R2930 H

E #6463

R2931 L

F #6464

R2931 H

High-speed input specification 1

High-speed input specification 2

High-speed input specification 4 (Spare)

High-speed input specification 3 (Spare)

High-speed output specification 1

High-speed output specification 2

High-speed output specification 3 (Spare)

High-speed output specification 4 (Spare)

2. System Configuration 2.4 System Selection

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Symbol

name 7 6 5 4 3 2 1 0

0 #6465 R2932 L - - - - - - - -

1 #6466 R2932 H - - - - - - - -

2 #6467 R2933 L - - - - - - - -

3 #6468 R2933 H

4 #6469 R2934 L

NC alarm 4 output off

5 #6470 R2934 H

6 #6471 R2935 L - - - - - - - -

7 #6472 R2935 H - - - - - - - -

8 #6473 R2936 L - -

9 #6474 R2936 H

A #6475 R2937 L

B #6476 R2937 H

C #6477 R2938 L

D #6478 R2938 H

E #6479 R2939 L

F #6480 R2939 H

Standard PLC parameter

(Note 1) Be sure to set the bits indicated - and blanks to 0. (Note 2) Parameters #6481 to #6496 are reserved for debugging by Mitsubishi.

3. Creating Ladder Circuit and Monitor Operation

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3. Creating Ladder Circuit and Monitor Operation

A ladder circuit can be created on board and further the created ladder circuit can be edited on board. The operation state of the sequence circuit in operation can also be monitored.

Built-in memory

The table below lists the items to be explained in this section:

Mode Function item Registers an edit file. File

specifica-tion mode

Creating the file User PLC RUN/STOP

Creates a circuit. (Not usable) Modifies an existing circuit. Writing the circuit Adds circuit blocks. Reads a circuit by step number. Reads a circuit by device number. Reads a circuit by contact or coil number. Reads a circuit by an instruction.

Reading the circuit

Reads the last circuit by the END instruction. Inserting the circuit Inserts circuit symbols.

Erases circuit blocks. Erasing the circuit Erases circuit symbols. Monitors the circuit. Freezes the screen at monitor stop trigger point. Monitors registration.

Circuit mode

Monitoring the ladder circuit.

Monitors the current value (Decimal Hexadecimal)

Note : To edit or create ladder circuits, stop the user PLC. For the operation procedure, see the section "3.1.2 User PLC RUN/STOP by setting and display unit operation."

< >

3. Creating Ladder Circuit and Monitor Operation

- 17 -

The modes and function items above are explained in order. (1) Menu operation

F0 Controller function selection key

1 2 3 4

5 6 7 8

(Function menu)

(Submenu)

MENU

MENU

MESSG. LADDER MENU

MENUFILE

4 LADDERPress menu key

2 CIRCUT

Press menu key 2 CIRCUT

(Operation menu)

1 READ 2 WRITE 3 INSERT 4 DELETE MENU

MENU

MENU MENU

MENU

5 COMVT 6 MONIT

9 SET

(2) Circuit mode display screen

MEM ( 4002 STEP )

3. Creating Ladder Circuit and Monitor Operation

- 18 -

(3) Basic key operation

(a) The following basic five instruction input patterns are available:

1) Circuit symbol + device number

(Example)

2) Circuit symbol + device number + device number

(Example)

3) Circuit symbol + instruction + device number

(Example)

4) Circuit symbol + instruction + device number + device number

(Example)

5) Circuit symbol + instruction + device number + device number + device number

(Example)

3. Creating Ladder Circuit and Monitor Operation

- 19 -

(b) Caution on key operation

1) Some symbols used as commands in the setting display unit of the control unit do not have corresponding keys such as < and > . In that case, operation is carried out using the alternative keys shown in the following table. The alternative keys can also be used even if there are keys corresponding to commands. The following table shows the basic keys such as < and > and the alternative keys.

Note) The actual key for the INPUT key is INPUT

CALC , but is shown as INPUT in this manual.

Basic key and alternate key operation in programming

Instruction Basic key operation

Alternative key operation Instruction Basic key

operation Alternative key

operation

+ + A D LD> > G T

D+ D + D A D AND> > G T

S U B OR> > G T

D D D S U B LDD> D > D G T

M U L ANDD> D > D G T

D D D M U L ORD> D > D G T

/ / D I V LD< < L T

D/ D / D D I V AND< < L T

LD= = E Q OR< < L T

AND= = E Q LDD< D < D L T

OR= = E Q ANDD< D < D L T

LDD= D = D E Q ORD< D < D L T

ANDD= D = D E Q SPACE SP ,

ORD= D = D

(Example) To program enter the key sequence

[ ] G T SP D 1 SP D 0 INPUT

.

It is displayed in the setting area as the key sequence is entered during operation. However, when INPUT is pressed, the program (circuit) is displayed in the ladder display

area as .

3. Creating Ladder Circuit and Monitor Operation

- 20 -

(4) Terms (a) Device and device No.

The device is the address signal used to classify the signals handled by the PLC, and the device No. is a serial No. assigned to that device. The device Nos. for device X, Y, M and H are hexadecimal, and all others are decimals.

(b) Device list

Device Device number Unit Contents X X0 to XABF (2752) 1 bit Input signal to PLC, such as machine input

Y Y0 to YDFF (3584) 1 bit Output signal from PLC, such as machine output

M M0 to M8191 (8192) 1 bit Temporary storage F F0 to F127 (128) 1 bit Temporary storage, alarm message interface L L0 to L255 (256) 1 bit Latch relay (backup memory)

SM SM0 to SM127 (128) 1 bit Special relay

T0 to T15 (16) 1 bit/16 bits 10 ms unit timer T16 to T55 (40) 1 bit/16 bits 10 ms unit timer (fixed timer) T56 to T135 (80) 1 bit/16 bits 100 ms unit timer T136 to T231 (96) 1 bit/16 bits 100 ms unit timer (fixed timer) T232 to T239 (8) 1 bit/16 bits 100 ms unit integrated timer

T

T240 to T255 (16) 1 bit/16 bits 100 ms unit integrated timer(fixed timer) C0 to C23 (24) 1 bit/16 bits Counter

C C24 to C127 (104) 1 bit/16 bits Counter (fixed counter)

D D0 to D1023 (1024) 16 bits/32 bits Data register, operation register

R R0 to R8191 (8192) 16 bits/32 bits File register, PLC-NC interface The user released registers are R500 to R549 and R1900 to R2799. R1900 to R2799 are backed up by the battery.

Z Z0 to Z1 (2) 16 bits Index of D or R address (n) N N0 to N7 (8) Master control nesting level

P P0 to P255 (256) Label of conditional jump and subroutine call.

K-32768 to K32767 Decimal constant for 16-bit instructions K K-2147483648 to

K2147483647 Decimal constant for 32-bit instructions

H0 to HFFFF Hexadecimal constant for 16-bit instructions H

H0 to HFFFFFFFF Hexadecimal constant for 32-bit instructions

Note 1) The application of devices indicated by a in the "Device" column is determined. Do not use undefined device Nos., even when blank.

(c) Circuit symbols

The eight symbols listed in the table below are used in the circuit:

Circuit symbol Contents

Used in the A-contact circuit.

Used in the B-contact circuit.

Used in the A-contact OR circuit.

Used in the B-contact OR circuit.

Used for a coil, (Y, M, F, L, SM, T, C)

Used for programming a functional instruction.

Used to connect circuit symbols.

Used to connect circuit symbols.

3. Creating Ladder Circuit and Monitor Operation

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(d) Circuit block

The circuit block is a circuit closed by the or symbol.

(Example)

3. Creating Ladder Circuit and Monitor Operation

- 22 -

(e) Step number and pointer (P) Step numbers are sequentially assigned to the programmed circuits. They change automatically when the circuit are edited. A pointer (P) is a label which indicates the destination to go when a conditional jump occurs or when a subroutine call is issued. some pointers are used for special purposes as follows:

P128 to P159 : These pointers can be used the same way as P0 to P127. In addition, these can

be used as the page feed symbols when the ladder circuit is printed out. P250 to P255 : These pointers are used to delimit the PLC programming levels.

3. Creating Ladder Circuit and Monitor Operation 3.1 Creating the File

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3.1 Creating the File

(1) Menu operation

F0 Control unit function selection key

(Function menu)

MESSG. LADDER

FILE MENU

Press function menu 3 FILE (Submenu)

2 WRITE 4 RUN/SP

.

3.1.1 Registering the edit file

When creating a ladder circuit, the file name and size expected to be used must be registered. (Already registered items need not be registered.)

(Note) In the PLC development environment of the GX Developer, a new circuit cannot be created,

so this operation is not necessary.

3. Creating Ladder Circuit and Monitor Operation 3.1 Creating the File

- 24 -

3.1.2 User PLC RUN/STOP by setting and display unit operation

To create or update the ladder circuits or message data, the user PLC must be stopped.

[Basic operation]

(1) Stop the user PLC as follows:

(2) Run the user PLC as follows:

0

[Operation procedure]

(1) Press F0 and 3 FILE to display the PLC edit file registration screen. (2) Press 4 RUN/SP to display the setting area. The message display area display "PLC RUN" if the

user PLC is running, or "PLC STOP" if it is in the stop state. (3) To stop the user PLC, press 1 and then INPUT . To run the user PLC, press 0 and then

INPUT . The message display area displays "PLC STOP" or "PLC RUN".

CAUTION

(1) The PLC can be put into a STOP status by setting the rotary switch NCSYS on the lower part of the control unit to No. 1 (STOP).

(2) An emergency stop will result when the user PLC is stopped with this function, in the same manner as the method using the rotary switch NCSYS. First carry out an emergency stop using the dedicated emergency stop button, etc., then put the user PLC in an emergency stop status.

3. Creating Ladder Circuit and Monitor Operation 3.2 Writing the Circuit

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3.2 Writing the Circuit 3.2.1 Creating the circuit

This operation creates a new ladder circuit or completely erases existing ladder circuits. (Note) In the PLC development environment of the GX Developer, a new circuit cannot be created.

3. Creating Ladder Circuit and Monitor Operation 3.2 Writing the Circuit

- 26 -

3.2.2 Modifying the existing circuit

This operation modifies the existing sequential circuits.

[Basic operation]

[Operation procedure] (1) According to the read operation, read the circuit block to be modified. (2) Pressing 2 WRITE erases all circuit blocks from the screen, only leaving the circuit block at the

cursor position. When modifying the circuit block other than the one displayed on the top of the screen, move the

cursor to the beginning of the target block and then press 2 WRITE : the specified circuit block moves to the top of the screen and the other blocks disappear.

(3) Using the keys, move the cursor to the position where the circuit is to be modified and then enter the necessary instruction and data.

(4) Be sure to press 5 CONVT and INPUT after modifying the circuit. Pressing the two keys displays the message COMPLETED in the message display area and, at

the same time, displays the modified circuit.

Point (1) If the circuit modification involves the change of a step number, the succeeding program step

numbers and conditional jump (CJ) destination labels are also accordingly changed.

(Example) Modify coil Y10 to Y35.

3. Creating Ladder Circuit and Monitor Operation 3.2 Writing the Circuit

- 27 -

3.2.3 Adding the circuit block

This operation adds a circuit block to the existing sequential circuits.

[Basic operation]

Reading the circuit

[Operation procedure] (1) According to the read operation, read the circuit steps where a circuit block is to be added to. (2) Pressing 2 WRITE erases all circuit blocks from the screen, only leaving the circuit block at the

cursor position. When adding the circuit block to the one other than that displayed on the top of the screen, move

the cursor to the beginning of the target block and then press 2 WRITE : the specified circuit block moves to the top of the screen and the other blocks disappear.

(3) Pressing + and INPUT erases the circuit block on the top of the screen and displays the next step number and two vertical base lines.

(4) Write an additional circuit block by entering necessary instructions and data. (5) Be sure to press 5 CONVT and INPUT after adding the circuit.

(Example) Add the circuit block containing devices X5 and Y15 to step No.50.

3. Creating Ladder Circuit and Monitor Operation 3.2 Writing the Circuit

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Point (1) Inserting or adding a circuit block automatically changes the succeeding program step

numbers and CJ destination labels.

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

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3.3 Reading the Circuit 3.3.1 Reading the circuit by step number

This operation reads the circuit blocks by specifying a step number.

[Basic operation]

[Operation procedure]

(1) Press 2 CIRCUIT , 1 READ , and 9 SET , enter the step number, then press INPUT . This displays the circuit blocks starting from the one whose step number is specified on the screen. If the number of an intermediate step of a circuit block is specified, the step numbers are

displayed from the first step of the block. (2) Pressing and INPUT

displays the circuit on the previous screen (scrolling one screen up) while

pressing + and INPUT displays the circuit on the next screen (scrolling one screen down).

Pressing INPUT successively scrolls another screen down. when the screen is scrolled down to the last circuit block, LADDER END is displayed in the message display area.

Pressing after pressing INPUT and INPUT works the same as above.

Note) It takes time to display another screen by pressing and INPUT three times more than by

pressing + and INPUT .

(3) If one circuit block is divided in two screens, use the cursor key or to move the cursor to

the top or bottom of the screen and further press the cursor key to scroll the screen one line. Continue to press the cursor key until the whole block appears on the screen.

Even when the circuit block is not divided in two screens, pressing the cursor key or can

scroll the screen. Note that, however, pressing the cursor key can scroll the screen but cannot display the next circuit.

(Example 1) Read the program with step No.100.

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

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(Example 2) After reading the program with step No.100, move the cursor key to the bottom of

the screen, then press four times then four times.

Note) If part of the circuit block displayed on the bottom of the screen is hidden on the next screen, it can be displayed on the current screen by moving the cursor beyond the bottom of the screen. Pressing the cursor key further cannot display the next circuit block.

Similarly, pressing the cursor key cannot display the circuit blocks before the step read out, step No. 100 in the above example.

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

- 31 -

(Example 3) After reading the program with step No.100, operate the + , INPUT , INPUT , , INPUT ,

and then INPUT keys.

100

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

- 32 -

3.3.2 Reading the circuit by device number

This operation reads the circuit block containing the specified device number.

[Basic operation]

[Operation procedure]

(1) Press 2 CIRCUIT and 1 READ , enter the device number, then press INPUT . The circuit block containing the specified device number is displayed. If several circuit blocks contain the specified device number, the circuit block with the smallest step

number is first displayed. Pressing INPUT , displays the circuit with the second smallest step number under the circuit block currently displayed.

When the screen is full of circuit blocks, pressing INPUT pushes the first circuit block out of the screen and adds another circuit block on the bottom.

(2) If another device number is specified during the operation, the circuit block containing the specified device number is displayed under the one previously displayed.

(3) After all target blocks have been read, an attempt to read another circuit block causes PROG. NOT FOUND to be displayed in the message display area.

(Example) Read the circuit block containing Y30.

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

- 33 -

3.3.3 Reading the circuit by contact or coil number

This operation reads the circuit block containing the specified contact or coil number.

[Basic operation]

[Operation procedure] (1) Press 2 CIRCUIT , 1 READ , and a circuit symbol key ( 1 , 2 , 3 ,

4 , or 5 < > ), enter the device number, then press INPUT . The circuit block containing the specified contact or coil number is displayed.

If several circuit blocks contain the specified contact or coil number, the circuit block with the smallest step number is first displayed. Pressing INPUT displays the circuit with the second smallest step number under the circuit block currently displayed. When the screen is full of circuit blocks, pressing INPUT pushes the first circuit block out of the screen and adds another circuit block on the bottom.

(2) If another contact or coil number is specified during the operation, the circuit block containing the specified contact or coil number is displayed under the one previously displayed.

(3) After all target blocks have been read, an attempt to read another circuit block causes PROG. NOT FOUND to be displayed in the message display area.

(4) When reading the circuit block by contact, pressing 1 and entering a device number reads

contact A while pressing 2 and entering a device number reads contact B.

(5) Pressing 5 < > and entering a device number reads the OUT instruction.

(Example) Read the circuit block containing contact A with device No. X10.

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

- 34 -

3.3.4 Reading the circuit by instruction

This operation reads the circuit block containing the specified instruction.

[Basic operation]

[Operation procedure]

(1) Press 2 CIRCUIT , 1 READ , and 6 [ ] , specify the instruction, and then press INPUT . The circuit block containing the specified instruction is displayed.

If several circuit blocks contain the specified instruction, the circuit block with the smallest step number is first displayed. Pressing INPUT displays the circuit with the second smallest step number under the circuit block currently displayed. Specification of a device number is ignored.

(2) If another instruction is specified during the operation, the circuit block containing the specified instruction is displayed under the one previously displayed.

(3) When the screen is full of circuit blocks, pressing INPUT pushes the first circuit block out of the screen and adds another circuit block on the bottom. (See example 2.)

(4) After all target blocks have been read, an attempt to read another circuit block causes PROG. NOT FOUND to be displayed in the message display area.

(Example 1) Read the circuit block containing the PLS M80 instruction. (here, M80 is insignificant.)

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

- 35 -

(Example 2) Read the circuit block containing the MOV instruction.

4023

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

- 36 -

3.3.5 Reading the circuit by END instruction

This operation reads the circuit block immediately before the block containing the END instruction.

[Basic operation]

[Operation procedure]

(1) Press 2 CIRCUIT , 1 READ , and 6 [ ] , type E N D , and then press INPUT . The circuit block immediately before the one containing the END instruction is displayed.

(Example) Read the last circuit block.

The message display area displays LADDER END.

MEMORY ( 4002 STEP)

3. Creating Ladder Circuit and Monitor Operation 3.3 Reading the Circuit

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3.3.6 Circuit read function

Read object Example of operation Example of displayed circuit Remarks

Step number 9 SET 2 8

INPUT

Reads the circuit blocks of the specified step and succeeding steps.

Y 3 INPUT

M 1 0 INPUT

P 1 0 INPUT

Reads the circuit block containing the specified device number disregarding the types of symbols.

Device number

T 1 5 INPUT

C 3 INPUT

When reading a circuit block specifying device T or C, the device indicated by circuit symbol " " cannot by read. For example, cannot be read.

1 Y 3 INPUT

2 Y 3 INPUT

5 < > Y 3 INPUT

Reads each circuit symbol separately. The combination of circuit symbol " " and device number cannot be used for reading.

Circuit symbol

and device. 5 < > T 1 5

INPUT Reads the circuit blocks of the specified timer or counter coil.

6 [ ] M O V INPUT

Reads the blocks containing the MOV instruction disregarding device numbers. Circuit symbol

with instruction code.

6 [ ] E N D INPUT

Reads the last circuit block of the sequence circuit.

3. Creating Ladder Circuit and Monitor Operation 3.4 Inserting the Circuit

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3.4 Inserting the Circuit 3.4.1 Inserting the circuit symbol

This operation inserts the circuit in units of circuit symbols.

[Basic operation]

[Operation procedure]

(1) According to the circuit read operation, display the circuit block into which a circuit symbol is to be inserted.

(2) Pressing 3 INSERT erases all circuit blocks except for the one at the cursor position. When inserting a circuit symbol into the circuit block other than the one displayed on the top of

the screen, move the cursor to the beginning of the target block and then press 3 INSERT : the specified circuit block moves to the top of the screen and the other blocks disappear.

(3) Using the cursor keys, move the cursor to the position where a symbol is to be inserted and perform the instruction input operation. Note that, depending on the system, data insertion may be not allowed at the top of the screen. with such system, an attempt to insert a circuit symbol results in an operation error, displaying OPERATION ERROR in the message display area.

(4) After insertion of a circuit, be sure to press 5 CONVT and INPUT .

When INPUT is pressed, COMPLETED is displayed in the message display area and the updated circuit is displayed.

Point

Inserting or adding a circuit changes automatically the succeeding program step numbers and CJ destination labels.

3. Creating Ladder Circuit and Monitor Operation 3.4 Inserting the Circuit

- 39 -

(Example) Read step No.18 and insert contact B with device No.X8 as an AND circuit after the contact with device No. Y15.

3. Creating Ladder Circuit and Monitor Operation 3.4 Inserting the Circuit

- 40 -

The following shows the examples of insertion/addition of other circuit symbols. (a) Inserting the contact (i)

(ii)

(b) Inserting the horizontal bar

3. Creating Ladder Circuit and Monitor Operation 3.4 Inserting the Circuit

- 41 -

(Before keying in) (After keying in)

(c) Inserting the vertical bar

3. Creating Ladder Circuit and Monitor Operation 3.5 Deleting the Circuit

- 42 -

3.5 Deleting the Circuit 3.5.1 Deleting the circuit block

This operation can delete circuit blocks one by one.

[Basic operation]

[Operation procedure]

(1) According to the circuit read operation, display the circuit block to be deleted.

(2) Pressing 4 DELETE erases all circuit blocks except for the one at the cursor position. When deleting the circuit block other than the one displayed on the top of the screen, move the

cursor to the beginning of the target block and then press 4 DELETE : the specified circuit block moves to the top of the screen.

(3) Press 5 < > or 6 [ ] . DELETE 1-CIRCUIT is displayed in the message display area.

Pressing the INPUT key again deletes the specified block. Even when the target circuit block contains the data instruction for the output device, pressing

4 DELETE and 5 < > or 6 [ ] , and INPUT can delete the block.

Note) After deleting the circuit block, there is no need to press 5 CONVT and INPUT .

Point

Deleting a circuit changes automatically the succeeding program step numbers and CJ destination labels.

3. Creating Ladder Circuit and Monitor Operation 3.5 Deleting the Circuit

- 43 -

(Example) Read step No.25 and delete the circuit block containing it.

3. Creating Ladder Circuit and Monitor Operation 3.5 Deleting the Circuit

- 44 -

(Example) When an attempt to press 5 CONVT and INPUT after creating the circuit causes a LADDER ERROR, delete the faulty circuit block. Or, delete a circuit block before pressing 5 CONVT and INPUT

.

Move the cursor down.

When a normal circuit block is deleted, DELETE 1-CIRCUIT is displayed in the message display area. when a circuit block with no step number assigned is deleted, DELETE 1-CIRCUIT (DISP) is displayed.

3. Creating Ladder Circuit and Monitor Operation 3.5 Deleting the Circuit

- 45 -

3.5.2 Deleting the circuit symbol

This operation can delete a sequence circuit in units of circuit symbols.

[Basic operation]

[Operation procedure]

(1) According to the circuit read operation, display the circuit block containing the circuit symbol to be deleted.

(2) Pressing 4 DELETE erases all circuit blocks except for the one at the cursor position. When deleting the circuit block other than the one displayed on the top of the screen, move the

cursor to the beginning of the target block and then press 4 DELETE : the specified circuit block moves to the top of the screen.

(3) Using the cursor keys, move the cursor to the circuit symbol to be deleted, and press 1 , 2 , 3 , 4 , 7 , or 8 then press INPUT to delete it.

(4) After deleting the circuit, be sure to press 5 CONVT and INPUT .

When the INPUT key is pressed, COMPLETED is displayed in the message display area and the updated circuit is displayed.

Point

Deleting a circuit symbol and conversion change automatically the succeeding program step numbers and CJ destination labels.

3. Creating Ladder Circuit and Monitor Operation 3.5 Deleting the Circuit

- 46 -

(Example) Read step No.12 and delete X3.

The following shows examples of deletion of other circuit symbols. (a) Deleting the contact

(i)

(ii)

(iii)

Conversion is invalid with this circuit.

4

3. Creating Ladder Circuit and Monitor Operation 3.5 Deleting the Circuit

- 47 -

(b) Deleting the vertical bar

(i)

Conversion is invalid with this circuit.

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 48 -

3.6 Circuit Extension Function

The circuit extension function is used to create an M300 series ladder circuit which is wider than eight contacts and one coil (equivalent to nine contacts). The circuit extension function operation method and specifications are explained. Caution

(1) When 2 WRITE is pressed, a maximum of six returns can be made if the number of extended

lines is one; when 3 INSERT is pressed, the number of returns is up to one.

Ladder circuit display buffers consist of 18 stages long and nine contacts (containing a coil) wide. Six stages are displayed on the screen. The section not displayed on the screens displayed by using .

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 49 -

3.6.1 Extension circuit operation examples

(1) Write example of a single return

Write . M11

Write . M21

Likewise, a maximum of six returns can be made if the number of extended lines is one.

Circuit symbols to enable an extension during write

Circuit symbols to disable an extension during write

If any of the symbols is used, an "OPERATION ERROR" occurs when INPUT is pressed.

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 50 -

(2) Write example of two or more extended lines

Write . X2

Write . X1

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 51 -

(3) Write example of function instruction into return part

Write .

To write a function instruction into the return part, once extend by writing (horizontal line) before writing the function instruction. If the function instruction is directly written, an "OPERATION ERROR" occurs.

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 52 -

(4) Insertion example 1 of a single extended line

Insert . F2

Insert . F1

The insertion function inserts a contact etc., in the cursor position.

If nine contacts (containing a coil) are exceeded, the line is extended as shown above. However, only one return can be made in insertion operation.

Circuit symbols to enable an extension during insertion

Circuit symbols to disable an extension during insertion

If any of the circuit symbols is used, an "OPERATION ERROR" occurs when INPUT is pressed.

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 53 -

(5) Insertion example 2 of a single extended line (when more than one coil exists)

Insert . F3

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 54 -

(6) Insertion example when function instruction exists in coil part

Insert . F4

Insert . F5

Insert . F3

Note) If a function instruction handled as a contact, such as =, >, or < exists in the return part, no insertion can be made. If insertion is made, an "OPERATION ERROR" occurs.

Insert .

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 55 -

(7) Insertion example 1 when two or more lines are extended

Insert . F1

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 56 -

(8) Insertion example 2 when two or more lines are extended

Insert . F5

Insert . F6

M17 M18

M27 M28

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 57 -

3.6.2 Error message

Insert .

An "OPERATION ERROR" occurs.

Insert . F1

A "CIRCUIT CONTINUATION ERROR" or "OPERATION ERROR" occurs. If two or more lines are extended, only one return can be made.

Insert . F1

"CIRCUIT CONTINUATIVE SIZE OVER" occurs. The number of returns is maximum six.

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 58 -

Insert . F1

"LADDER OVER FLOW" occurs. The maximum number of stages as a result of extension is 18.

3. Creating Ladder Circuit and Monitor Operation 3.6 Circuit Extension Function

- 59 -

3.6.3 Relationship between number of returns and circuit length

The relationship between the number of returns and the maximum length of circuit that can be created at the time is as listed below:

Number of returns (times) 0 1 2 3 4 5 6 7 8

Circuit length (stages) 18 11 7 5 4 3 3 2 2

When the limits are exceeded, a "CIRCUIT CREATION ERROR" occurs.

(Example)

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

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3.7 Monitoring the Ladder Circuit

The operation state of the sequence circuits can be monitored. The following monitoring functions are available:

1. Circuit monitoring function 2. Screen freezing function at monitor stop trigger point 3. Registered device monitoring function 4. Decimal/hexadecimal current value monitoring function

(1) Screen display structure during monitoring

MEM ( 4002 STEP )

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

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(2) Monitor screen display method (a) An energized circuit and nonenergized circuit are displayed as follows:

(b) The monitor screen displays not only the ON/OFF states of the circuits but also the set values and current values of the timer (T), counter (C), data register (D), and file register (R) contained in the circuits displayed. Up to six values of such symbols from the above of the circuits are displayed in order from left to right in the monitor display section.

(Example)

Note 1) The set and current values of the timer and counter are monitored disregarding whether the circuit symbols are contacts ( , ) or coils ( ). If the set value is not a constant but the data register value, the contents of the data register are monitored as the set value. The values set not by a program but by the "SETUP PARAMETERS" on the PLC TIMER screen and PLC COUNTER screen can be used as the set values of the timer (T) and counter (C), in which case the values set by the screens are displayed as the set values.

BIT SELECT Parameter

#6449 Setting method

OFF The timer value set in PLC TIMER screen is valid.BIT0 ON The timer value set in program is valid. OFF The counter value set in PLC COUNTER screen is valid.BIT1 ON The counter value set in program is valid.

Nonenergized circuit : Energized :

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

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Note 2) When data in the data register and file register is displayed for monitoring, the system converts the data stored in a binary form from 0 to 65535 to decimal number. Therefore, if the contents are BCD data, different figures are displayed.

(Example)

When D0 in the circuit is monitored, D0=99 is displayed.

When D0 in the circuit is monitored, D0=153 is displayed.

(c) The MCR instruction and function instructions are always displayed in the form of regardless of the operation states. These are never displayed in .

3.7.1 Monitoring the circuit

This operation monitors the operation states of the sequence circuits dynamically.

[Basic operation]

[Operation procedure]

(1) According to the circuit read operation, read the circuit block to be monitored.

(2) Pressing 6 MONIT displays the operation state of the sequence circuit and the set and current values of the timer, counter, data register, and file register for monitoring.

Successively pressing the + and INPUT keys enables monitoring the succeeding circuit.

To monitor the circuit preceding the one currently displayed, press the and INPUT keys.

After this, the circuit preceding the current one can be monitored sequentially each time INPUT is pressed.

After pressing the and INPUT keys, pressing the + and INPUT keys returns to the previous

circuit. After this, the succeeding circuit can be monitored sequentially each time INPUT is pressed.

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

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(Example) Read and monitor step No.10.

5.CONVT 6.MONIT MENU

MEM ( 4002 STEP )

(3) Operations no monitoring (a) Read the target circuit by step number and enter monitor mode, then switch the monitor

screens by pressing the + or and INPUT keys.

(b) Read the target circuit block by contact, coil number, or instruction, and then enter monitor mode. (Note 1)

2

0

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

- 64 -

(c) After entering monitor mode, read the target circuit block by step number and then monitor it.

(d) After entering monitor mode, read the target circuit by contact, coil number, or instruction and

then monitor it. (Note 1)

0

Note 1) When monitor mode is entered in this way, the screen cannot be switched by pressing the + or and INPUT keys.

3.7.2 Freezing the screen at monitor stop trigger point

During circuit monitoring, this operation can freeze the monitor screen at the monitor stop trigger point regardless of the PLC operation.

[Basic operation]

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

- 65 -

[Operation procedure]

(1) According to the circuit monitor operation, monitor the screen to be stopped at the trigger point.

(2) Press the 7 , 0 ~ 2 , INPUT , Circuit Symbol , or 1 or 5 < > keys, enter the

device number, and then press INPUT . when the specified device changes, the monitor screen is frozen with the current display kept.

(3) To release the frozen screen, press 6 MONIT again.

(1) Only one trigger point can be specified. If two or more trigger points are specified, the one specified last is assumed.

(2) Only the devices used in the OUT or contact instruction can be specified as the trigger point. The trigger point need not be the device displayed on the current monitor screen.

If a data register (D) or file register (R) is specified as the trigger point, OPERATION ERROR is displayed in the message display area.

(3) The screen may not be frozen if the specified trigger point is included in a high-speed processing circuit such as the one including a pulse instruction.

(Example) Monitor the circuit according to the circuit monitor operation, then stop the screen

when the timer T1 exceeds the given time.

5.CONVT 6.MONIT MENU

MEM ( 4002 STEP )

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

- 66 -

3.7.3 Monitoring the registered device

This operation can monitor a maximum of six devices by registering the device types and numbers.

[Basic operation]

[Operation procedure]

(1) Enter monitor mode with circuit monitor operation.

(2) To monitor devices other than those displayed on the current monitor screen, press 8 ,

register the target device, then press INPUT . The registered device is displayed on the right of the monitor display area.

When several devices are registered, repeat the procedure of specifying 8 , the target

device, and INPUT for each device

When several devices are registered, they are displayed sequentially from the right to left in the monitor display area.

Up to six devices can be registered at a time. If more than six devices are specified, the first six devices are registered. If the registration monitoring falls on the normal monitoring of the timer (T), counter (C), data register (D), or file register (R), the former is given priority.

For devices T, C, D, R, and index register (Z), the current values are displayed while for bit devices X, Y, L, F, and M, ON/OFF states are displayed.

(3) To release the registration monitoring, press 6 MONIT again, or display the previous or next

screen to change the display in the ladder display area.

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

- 67 -

(Example) According to the circuit monitor operation, display the screen to monitor, and register T5

and Y30 for registration monitoring.

5.CONVT 6.MONIT MENU

3. Creating Ladder Circuit and Monitor Operation 3.7 Monitoring the Ladder Circuit

- 68 -

3.7.4 Monitoring the current value in decimal hexadecimal notation

During circuit monitoring and registration monitoring, the values of T, C, D, R and Z are normally displayed in decimal notation. They can be displayed in hexadecimal notation by the switching operation.

[Basic operation]

[Operation procedure]

(1) According to the circuit monitor operation, display the circuit to be monitored.

(2) Press H , and INPUT : the decimal values of T, C, D, R and Z displayed in the circuit or registration monitor screen are changed to the hexadecimal values. while the values are displayed in hexadecimal notation, H is prefixed to each number.

(3) To change the hexadecimal value back to the decimal value, press K and INPUT , or 6 MONIT .

(Example) Reading data register D10 and displaying the contents in hexadecimal number.

X1

4. Precautions for PLC Development Environment of GX Developer 4.1 Starting

- 69 -

4. Precautions for PLC Development Environment of GX Developer 4.1 Starting

The conditions shown below must be satisfied to start the onboard operation by pressing the function selection key F0 .

Items Conditions Ladder format stored in the CNC GX Developer format (Note 1) Onboard operation valid parameter (Bit selection parameter #6451 bit 0) 1: ON

PLC environment selection parameter (Bit selection parameter #6451 bit 4) 1: ON (Note1)

GX Developer communication usage selection parameter (Bit selection parameter #6451 bit 5)

0: OFF (Note1)

Waveform display valid parameter (#1222 bit 2)

0: OFF

Note1) If the contents are changed, the power must be turned ON again. When the conditions described above are not satisfied, the other function screen is displayed following to the priority below, or a blank screen is displayed.

Sarvo waveform screen > Onboard

High LowPriority 4.2 Onboard Initial Menu

The initial screen menu configuration and shift immediately after starting is shown below.

L A D D E R MENU

F I L E MENU

The ladder diaplay screen is displayed.

Change with "MENU"

The PLC file infomation + RUN/STOP changeover screen is diaplayed.

4. Precautions for PLC Development Environment of GX Developer 4.3 PLC File Information + RUN/STOP Changeover Screen

- 70 -

4.3 PLC File Information + RUN/STOP Changeover Screen

By pressing the "FILE" menu, the PLC file information + RUN/STOP changeover screen is displayed. The name and size of the file related to the ladder created with the GX Developer and transferred are displayed.

PLC FILE INFORMATION

LADDER FILE COMMENT FILE 1 MESSAGE FILE 1 COMMENT FILE 1 MESSAGE FILE 2

NAME (TESTLAD ) ( ) ( ) ( ) ( )

SIZE ( 28K BYTE) ( K BYTE) ( K BYTE) ( K BYTE) ( K BYTE)

R U N / S P

RUN/STOP changeover screen By pressing the "RUN/SP" menu, the current PLC state and data setting area are displayed on the lower part of the screen.

0:RUN 1:STOP ( ) PLC STOP

PLC stateData setting part Input "0" or "1" to the ( ), and press the "INPUT".

4. Precautions for PLC Development Environment of GX Developer 4.4 Restrictions for Circuit Display

- 71 -

4.4 Restrictions for Circuit Display

With the GX Developer and the onboard, their restriction specifications for the circuit display and editing are different. The restriction specification of the onboard is narrower than that of the GX Developer, so pay attention when creating a circuit in the GX Developer side. (1) Restriction specification

Onboard GX Developer No. of contacts

8 contacts, 1 coil 11 contacts, 1 coil Display specification for 1 screen No. of

stages 9 stages Window size depending on the

screen reduction rate Restriction specification for 1 circuit

18 stages (No. of returns: 0) (Note1)

200 or more series contacts, 24 stages

(Note) For the relationship between the number of the returns and the number of stages of the circuit,

refer to the section "3.6.3 Relationship between number of returns and circuit length". (2) Process of circuit over restriction specification

When the circuit over the onboard circuit restriction specification is created in the GX Developer side, the following messages are displayed.

Operation Message Process The circuit is displayed with the "READ" or "MONIT" function.

"DISPLAY OVER FLOW" The circuit is not displayed. (Only mother line is displayed.)

The "WRITE", "INSERT "DELETE" or "CONVT" function is selected.

"NOT WRITE" Editing operation is prohibited.

(3) Difference of the number of steps

With the GX Developer and the onboard, their numbers of steps are different, so the step number displayed in the same circuit may be different.

5. Messages

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5. Messages

During operation onboard, messages are displayed on the screen. There are two types of messages: error messages and function messages.

(1) Error messages

An error message is displayed when the operator operates the E3 unit incorrectly or defines invalid data.

Error message Meaning Action to be taken

OPERATION ERROR The unit is operated incorrectly. Operate the unit correctly. SETTING ERROR Invalid data is input in the data

setting area. Input correct data.

PROG NOT FOUND (1) When an attempt was made to search a device, instruction, or coil in read mode, the specified device, instruction, or coil was not found.

(1) Specify a device, instruction, or coil used in the ladder circuit.

(2) When an attempt was made to print a ladder or message, the specified ladder or message data was not found.

(2) Specify an existing program.

COMMAND CODE ERROR

In write mode, the specified sequence instruction is invalid.

Specify the sequence instruction correctly.

DEVICE NO. ERROR In write mode, an invalid device number is specified.

Specify a valid device number.

COIL ALREADY USED

In write mode, the same name as the existing coil is specified.

Although the message is displayed, the specified data is written.

LADDER ERROR There is a circuit that cannot be converted in convert mode.

Delete or recreate the circuit.

PROGRAM SIZE OVER

(1) In convert mode, the circuit size exceeds the registered size.

(1) Using the file function, increase the registered size.

(2) The No. of messages set for the No. of used messages registration exceeded the max. No. of usage messages.

(2) Set the No. of used messages to below the max. No. of usage messages.

PLC RUN An attempt is made to edit the user PLC program while it is running. (An attempt is made to perform some operation inhibited while the user PLC is running.)

Stop the user PLC by setting system selection switch No.2 to on or by operation as described under section 3.1.2.

NOT WRITE An attempt is made to write data without a read operation such as a step search or coil search.

Perform a necessary read operation.

CIRCUIT CONTINUATIVE SIZE OVER

When an attempt is made to create a ladder circuit with six or more returns.

Change the ladder circuit to up to six returns.

LADDER OVER FLOW

When the created circuit exceeds 18 stages after return.

Change the circuit to up to 18 stages after return.

5. Messages

- 73 -

Error message Meaning Action to be taken

CIRCUIT CONTINUATION ERROR

(1) When a vertical line exists at the return start position in an extended circuit.

(1) Place a vertical line at a position after return.

(2) When an attempt is made to perform two or more returns in a circuit having two or more extended lines.

(2) Extension operation cannot be performed.

Create a new circuit by write operation, etc.

SETTING ERROR (1) Invalid key data is entered. (2) An attempt is made to read

messages exceeding the number of registered messages.

Enter valid key data.

MESSAGE LINK ERROR

Message size cannot be judged correctly.

Register it on message initial.

(2) Function messages The function messages are displayed to give operation instructions or report processing states.

Function message Description

SELECT FUNCTION Displayed when function selection is needed. DISPLAY OVER FLOW Displayed when an attempt is made to move the cursor two screens

or more with the down cursor key . Pressing the key cannot scroll the screen any more.

LADDER END Displayed when the last program is read in read mode. DELETE 1-CIRCUIT Displayed when deletion of one circuit is specified in delete mode. COMPLETED Displayed when execution of the specified command ends. PRESS Displayed when an attempt is made to read the user PLC Program

after editing (writing, inserting, or deleting) it but before conversion. DELETE 1-CIRCUIT (DISP) Displayed when deletion of a circuit block in the buffer (not yet

converted) of the screen is specified in delete mode. EXECUTION Displayed while the specified command is being executed. SELECT FILE! Displayed when an attempt is made to write ladder circuit or perform

message operation without registering edit file.

6. Alarm Messages Related to PLC

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6. Alarm Messages Related to PLC

The alarm messages related to the execution of the PLC are shown below.

Sub-status Alarm No. Message 1 2 Details State Remedy

U01 No PLC The ladder is not a GX Developer ladder format.

EMG will be applied.

Set "1" to the PLC environment selection parameter (BIT SELECT #6451/bit4). Download the GX Developer format ladder. Then, turn the CNC power ON again.

U10 Illegal PLC

0x0010 Scan time error (The scan time is 1 second or longer.)

Only alarm display

Edit the ladder size to a smaller size.

0x0040 Ladder operation mode illegal A ladder different from the designated mode was downloaded.

EMG will be applied.

Set "1" to the PLC environment selection parameter (BIT SELECT #6451/bit4). Download the GX Developer format ladder. Then, turn the CNC power ON again.

0x0080 GX Developer ladder code error

EMG will be applied.

Download the correct GX Developer format ladder.

0x008 The ladder format is illegal.

EMG will be applied.

Set "1" to the PLC environment selection parameter (BIT SELECT #6451/bit4). Download the GX Developer format ladder. Then, turn the CNC power ON again.

0x0400 Number of ladder steps

Software exceptional interrupt The ladder process stopped abnormally due to a S/W command code illegal, etc.

EMG will be applied.

Turn the power ON again. (If the error is not reset, download the correct ladder.)

BIN and BCD error Only alarm display

BCD, BIN error Refer to the methods for using the BCD and BIN function commands.

0x800 Number of ladder steps

Software exceptional interrupt The ladder process

stopped abnormally due to a bus error, etc.

Bit 0: BIN command operation error

Bit 1: BCD command operation error

Bit6: CALL/CALLS/RET command error

Bit7: IRET command execution error

EMG will be applied for other than BIN and BCD.

Other than BCD and BIN Turn the power ON again. (If the error is not reset, download the correct ladder.)

U50 Stop PLC

The ladder is stopped. (The user ladder does not run.)

Start the ladder.

Revision History

Date of revision Manual No. Revision details

June.2008 IB(NA)1500179-A First edition created.

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Notice

Every effort has been made to keep up with software and hardware revisions in the contents described in this manual. However, please understand that in some unavoidable cases simultaneous revision is not possible. Please contact your Mitsubishi Electric dealer with any questions or comments regarding the use of this product.

Duplication Prohibited This manual may not be reproduced in any form, in part or in whole, without written permission from Mitsubishi Electric Corporation.

2008 MITSU

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