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MELSEC-Q

16 COMMUNICATION BETWEEN CPU MODULES IN MULTIPLE PLC

SYSTEM

• Each of the setting 1 to setting 4 devices can be set up

independently.

For example, the PLC No.1 can be set up as a link relay, and the

PLC No.2 can be set up as an internal relay.

Set the same point for all the PLC.

Refresh setting for PLC No.1

Refresh setting for PLC No.2

• When the PLC No.1 and PLC No.2 devices

have been set up with different devices

• When the PLC No.1 and PLC No.2 devices

have been set up with the same device

Default Chapter2
- Safety Instructions2
- Revisions7
- Table of Contents8
- Contents15
- Manuals18
- Overview19
- How to Use this Manual19
- Generic Terms and Abbreviations20
1 Overview21
- Features22
- Programs25
- Convenient Programming Devices and Instructions28
2 System Configuration for Single Cpu System32
- System Configuration32
- Precaution on System Configuration35
3 Performance Specification38
4 Sequence Program Configuration and Execution Conditions41
- Sequence Program41
- Program Execute Type50
- Operation Processing74
- RUN, STOP, PAUSE Operation Processing76
- Operation Processing During Momentary Power Failure77
- Data Clear Processing78
- I/O Processing and Response Lag79
  - Refresh Mode79
  - Direct Mode82
- Numeric Values Which Can be Used in Sequence Programs84
- Character String Data92
5 Assignment of I/O Numbers93
- Relationship between the Number of Stages and Slots of the Extension Base Unit93
- Installing Extension Base Units and Setting the Number of Stages94
- Base Unit Assignment (Base Mode)95
- What Are I/O Numbers99
- Concept of I/O Number Assignment100
  - I/O Numbers of Main Base Unit and Extension Base Unit100
  - Remote Station I/O Number102
- I/O Assignment by GX Developer103
  - Purpose of I/O Assignment by GX Developer103
  - Concept of I/O Assignment Using GX Developer104
- Examples of I/O Number Assignment107
- Checking the I/O Numbers110
6 High Performance Model Qcpu Files112
- About the High Performance Model Qcpu's Memory114
- Program Memory117
- About the Standard ROM119
- About the Standard RAM120
- Memory Card122
- Writing Data to the Standard ROM or the Flash Card123
  - Writing Data to the Standard ROM or to the Flash Card Using GX Developer123
  - Automatic Write to Standard ROM (Auto Download All Data from Memory Card to Standard ROM)125
- Executing Standard Rom/Memory Card Programs (Boot Run)128
- Program File Configuration131
- GX Developer File Operation and File Handling Precautions133
7 Function137
- Function List137
- Constant Scan138
- Latch Functions141
- Latch Clear Operation141
- Setting the Output (Y) Status When Changing From/To STOP Status To/From RUN Status143
- Clock Function145
- Remote Operation148
  - Remote RUN/STOP148
  - Remote PAUSE151
  - Remote RESET153
  - Remote Latch Clear155
  - Relationship of the Remote Operation and High Performance Model QCPU RUN/STOP Switch156
  - Selecting the Response Time of the Input Module157
  - Selecting the Response Time of the High Speed Input Module158
  - Selecting the Response Time of the Interrupt Module159
- Setting the Switches of the Intelligent Function Module160
- Monitoring Function161
  - Monitor Condition Setting161
  - Monitoring Test for Local Device165
  - Enforced ON/OFF for External I/O167
- Writing in Program During High Performance Model QCPU RUN171
  - Writing Data in the Circuit Mode During RUN171
  - Writing a Batch of Files During RUN174
- Execution Time Measurement176
  - Program Monitor List176
  - Interrupt Program Monitor List180
  - Scan Time Measurement181
- Sampling Trace Function183
- Debug Function with Multiple Users192
  - Multiple-User Monitoring Function193
  - Multiple-User RUN Write Function194
- Watch Dog Timer (WDT)196
- Self-Diagnosis Function198
  - Interrupt Due to Error Occurrence201
  - LED Display When Error Occurs201
  - Error Caucellation202
- Failure History203
- System Protect204
  - Password Registration204
  - Remote Password208
- Monitoring High Performance Model QCPU System Status from GX Developer (System Monitor)209
- LED Display213
  - Priority Setting215
- High Speed Interrupt Function217
  - High Speed Interrupt Program Execution219
  - High Speed I/O Refresh, High Speed Buffer Transfer220
- Contents221
  - Processing Time222
  - Restrictions224
- Module Service Interval Time Reading227
8 Communication with Intelligent Function Module/Special Function Module229
- Communication between High Performance Model QCPU and Q-Series Intelligent Function Modules229
- Request from Intelligent Function Module to High Performance Model QCPU234
  - Interrupt from the Intelligent Function Module234
- Communication between High Performance Model QCPU and Ans Series Special Function Modules235
9 Parameter List238
- Power Supply Module243
10 Devices248
- Device List248
- Internal User Devices250
- Internal System Devices278
- Link Direct Devices (J \ )282
- Intelligent Function Module Devices (U \G )285
- Index Registers (Z)286
  - Switching between Scan Execution Type Programs and Low Speed Execution Type Programs287
  - Switching between Scan/Low Speed Execution Type Programs and Interrupt/ Fixed Scan Execution Type Programs288
- File Registers (R)290
- Nesting (N)299
- Pointers (P)300
  - Local Pointers300
  - Common Pointers301
- Interrupt Pointers (I)303
- Other Devices305
- Constants308
- Convenient Uses for Devices310
  - Global Devices and Local Devices310
  - Device Initial Values316
11 High Performance Model Qcpu Processing Time319
- Reading High Performance Model Qcpu's Scan Time319
- Factors Responsible for Extended Scan Time320
- Factors Responsible for Shortened Scan Time322
12 PROCEDURE for WRITING PROGRAMS to HIGH PERFORMANCE MODEL QCPU 12- 1 To-12323
- Writing Procedure for 1 Program323
  - Items to Consider When Creating One Program323
  - Procedure for Writing Programs to the High Performance Model QCPU324
- Procedure for Multiple Programs327
  - Items to Consider When Creating Multiple Programs327
  - Procedure for Writing Programs to the High Performance Model QCPU328
13 Outline of Multiple Plc Systems331
- Features331
- Outline of Multiple PLC Systems333
- Differences with Single CPU Systems335
14 System Configuration of Multiple Plc Systems337
- System Configuration337
- Precautions for Multiple PLC System Configuration340
15 Allocating Multiple Plc System I/O Numbers357
- Concept Behind Allocating I/O Numbers357
  - I/O Modules and Intelligent Function Module I/O Numbers357
  - I/O Number of High Performance Model QCPU, Motion CPU and PC CPU Module358
16 Communication between Cpu Modules in Multiple Plc System360
- Automatic Refresh of CPU Shared Memory361
- Communication with Multiple PLC Instructions and Intelligent Function Module Devices368
- Interactive Communications between the High Performance Model QCPU and Motion CPU370
  - Control Commands from the High Performance Model QCPU to the Motion CPU370
  - Reading and Writing Device Data371
- CPU Shared Memory372
17 Communications between the Multiple Plc System's I/Omodules and Intelligent Function Modules375
- Range of Control PLC Communications375
- Range of Non-Control PLC Communications375
18 PROCESSING TIME for MULTIPLE PLC SYSTEM HIGH PERFORMANCE MODEL Qcpus380
- Concept Behind CPU Scanning Time380
- Factor to Prolong the Scan Time381
19 Starting up the Multiple Plc System383
- Flow-Chart for Starting up the Multiple PLC System383
- Setting up the Multiple PLC System Parameters (Multiple PLC Settings, Control PLC Settings)385
- Appendices392
- APPENDIX 1 Special Relay List392
- APPENDIX 2 Special Register List428
APPENDIX 3 List of Interrupt Pointer Nos. & Interrupt Factors449

Brand	Mitsubishi
Model	QCPU (Q Mode)
Category	Controller
Language	English

Mitsubishi QCPU (Q Mode) User Manual

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Mitsubishi QCPU (Q Mode) Specifications

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