Name: Mitsubishi Q2ACPU
Brand: Mitsubishi
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APPENDICES

(b) Devices that are outside the QnACPU range are converted to SM1255 if they are

bit devices and to SD1255 if they are word devices.

Default Chapter12
- Table of Contents12
1 ABOUT this MANUAL 1 - 1 to22
- About this Manual22
- Abbreviations and Generic Terms Used in this Manual23
2 Overview24
- Features24
- Additional Functions of Qnacpu28
  - Overview of Added Functions30
3 SYSTEM CONFIGURATION 3 - 1 to32
- System Configuration32
  - Equipment Configuration in a Stand-Alone System32
  - Configuration of Peripheral Devices Capable of Qnacpu33
- System Configuration Overview34
- System Equipment37
4 Performance Specifications57
5 I/O Number Assignment60
- I/O Numbers60
- I/O Number Assignment Concept61
- I/O Assignment with GPP Function63
- Example of I/O Number Assignment68
6 DATA COMMUNICATIONS with SPECIAL FUNCTION MODULES 6 - 1 to74
- Reading/Writing Data From/To the Qnacpu Using the FROM/TO Instruction75
- Reading/Writing Data From/To the Qnacpu Using Special Direct Devices76
- Processing for Data Communication Requests from a Special Function Module78
7 Auto Refresh Function79
- For MELSECNET/MINI-S379
- Auto Refresh Setting of CC-Link86
8 Debugging Function93
- Function List93
- Monitor Function94
  - Monitoring Condition Setting94
  - Monitor Test of Local Device (Function Version B or Later)104
- Write During RUN107
- Execution Time Measurement111
- Sampling Trace Function117
- Status Latch Function127
- Step Operation133
- Program Trace Function140
- Simulation Function149
- Debugging by Several People153
  - Simultaneous Monitoring by Several People154
  - Simultaneous Execution of Write During RUN by Several People155
9 Maintenance Function157
- Function List157
- Watchdog Timer158
- Self-Diagnostics Function160
- Error History166
- System Protect167
- Password Registration168
- Online I/O Module Replacement170
- System Display172
- LED Indications173
  - LED Indication173
  - Priority Setting175
10 Other Functions178
- Function List178
- Constant Scan179
- Latch Function182
- Setting of the Output (Y) Status When Switching from STOP to RUN184
- Clock Function185
- Remote Operation190
- Terminal Operation198
  - Operation for Message Display198
  - Key Input Operation199
- Reading Module Access Time Intervals200
11 COMMENTS that CAN be STORED in Qnacpu202
- Function List202
- PLC Name203
- Drive Title204
- File Title205
- Device Comment206
- Statements/Notes208
- Initial Device Value Comment209
12 OVERVIEW of PROCESSING PERFORMED by the Qnacpu 12 - 1 to210
- Program Execution Types210
- Operation Processing of RUN, STOP, PAUSE, and STEP-RUN233
- Operation Processing for Instantaneous Power Failure235
- Data Clear Processing236
13 Parameter List238
14 Selecting Memory Card Models249
- Applications of Memory Cards249
- Selecting Memory Card Capacity250
15 Hardware Specifications of Cpu Modules252
- Specifications252
- Part Names253
- Relationship between Switch Operations and Leds/Led Display256
16 Power Supply Module259
- Specifications259
- Handling Precautions266
- Part Names268
17 Base Unit and Extension Cable273
- Specifications of Base Units273
  - Main Base Unit for High-Speed Access (A38HB/A38HBEU)275
- Extension Cable Specifications276
- Application Standards of Extension Base Units (A52B, A55B, A58B)277
- Handling Precautions279
- Part Names280
- Setting of Extension Stage Numbers283
18 Memory Cards and Batteries284
- Memory Card Specifications284
- Handling Memory Cards286
- Battery Specifications (CPU Module and Memory Card Batteries)287
- Handling Precautions288
- Part Names of Memory Card289
- Installing Batteries (CPU Module and Memory Card Batteries)290
- Installing/Removing a Memory Card291
19 Loading and Installation293
- Fail-Safe Circuit Concept293
- Installation Environment299
- Calculation of Heat Generated by the PLC300
- Installing the Base Units302
  - Installation Precautions302
  - Installation303
- Installation and Removal of Modules304
- Installation and Removal of the Dustproof Cover307
- Wiring309
  - Wiring Instructions309
  - Wiring to Module Terminals314
- Precautions When Connecting Uninterruptible Power Supply Module (UPS)316
20 Emc and Low Voltage Directives317
- Requirements for Compliance with EMC Directives317
- Requirements for Compliance with Low Voltage Directives327
21 Maintenance and Inspection331
- Daily Inspection331
- Periodic Inspection332
- Battery Replacement334
  - Battery Life336
  - Battery Replacement Procedure338
- Fuse Replacement342
  - Replacement of the Fuse for a Power Supply Module342
  - Replacement of the Fuse for an Output Module343
- When Reoperating a PLC after Storing It with a Battery Unconnected344
- When a PLC Is Reoperated after Stored with the Battery over the Battery Life345
22 Troubleshooting346
- Fundamentals of Troubleshooting346
- Error Code List360
- Resetting Errors391
- Fault Examples with I/O Modules392
  - Faults with the Input Circuit and the Corrective Actions392
  - Faults in the Output Circuit394
Appendices398
Appendix 1 Instruction List398
- Appendix 1.1 Sequence Instructions398
- Appendix 1.2 Basic Instructions402
- Appendix 1.3 Application Instructions414
- Appendix 1.4 Data Link Instructions435
- Appendix 1.5 PID Control Instructions438
- Appendix 1.6 Special Function Module Instructions439
APPENDIX 2 Special Relay List445
APPENDIX 3 Special Register List469
Appendix507
- Qnacpu507
- Appendix 4.1 Instructions507
- Appendix 4.2 Devices515
- Appendix 4.3 Parameters517
- Appendix 4.4 Timer and Interrupt Counter Operations518
- Appendix 4.5 Sequence Programs, Statements, Notes519
- Appendix 4.6 Microcomputer Programs521
- Appendix 4.7 Comments522
- Appendix 4.8 Constant Scan Function, Error Check Function523
- Appendix 4.9 I/O Control Mode524
- Appendix 4.10 Data Link System525
- Appendix 4.11 Index Register Processing526
- Appendix 4.12 CHK Instruction, IX Instruction527
- Appendix 4.13 Accessing File Register R with Instructions528
Appendix 5.1 Error Codes529
- Error Codes Returned to the Request Source in General Data Processing529
- App529
Appendix 6 External Dimensions538
- Appendix 6.1 CPU Module538
- Appendix 6.2 Power Supply Module540
- Appendix 6.3 Main Base Unit542
- Appendix 6.4 Extension Base Unit544
  - Use of Local Device for Subroutine/Interrupt Program Storage File (Function Version B or Later)546
Appendix 8 Network Relay from Ethernet Module550
- (Function Version B or Later)550
APPENDIX 9 Qnacpu PROCESSING TIME553
- Appendix 9.1 Overview of Qnacpu Scan Time553
- Appendix 9.2 Causes of Increasing Scan Time554
Appendix 10 Transportation Precautions557
- Appendix 10.1 Relevant Models557
- Appendix 10.2 Transportation Guidelines558
APPENDIX 11 Handling of Batteries and Devices with Built-In Batteries in EU Member States559
- Appendix 11.1 Disposal Precautions559
- Appendix 11.2 Exportation Precautions560

Mitsubishi Q2ACPU User Manual

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Mitsubishi Q2ACPU Specifications

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Brand	Mitsubishi
Model	Q2ACPU
Category	Controller
Language	English