App -
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APPENDICES
Appendix 9.2
Causes of Increasing Scan Time
The following shows the functions that increase the QnACPU scantime.
When using the following functions, add the values calculated in Appendix 9.1 to the
following values.
• MELSECNET/10 refresh
• MELSECNET/MINI-S3 refresh
• CC-Link auto refresh
• Sampling trace
• Monitor using GX Developer
• Local device
• Multiple program execution
• Installation/removal of memory card
• File register whose file name is the same as the program
(1) MELSECNET/10 refresh
Refresh time between QnACPU and MELSECNET/10 network module
For MELSECNET/10 refresh time, refer to the following manual.
• QnA/Q4AR MELSECNET/10 Network System Reference Manual
(2) MELSECNET/MINI-S3 refresh
Refresh time between QnACPU and MELSECNET/MINI (S3) network module
For MELSECNET/MINI (S3) refresh time, refer to the following manual.
• MELSECNET/MINI-S3 Master Module User's Manual
(3) CC-Link auto refresh
Refresh time between QnACPU and CC-Link master local module
For the auto refesh processing time of CC-Link, refer to the following manual.
• Control & Communication Link System Master/Local Module type AJ61QBT11/
A1SJ61QBT11 User's Manual
(4) Sampling trace
(a) Processing time in the case of sampling trace execution
Sampling trace data are set using GX Developer, and the processing time is
added when the sampling trace is executed.
(b) The following table shows the processing time when internal relay 50 points as a
bit device, data register 50 points as a word device are set for sampling trace
data.
CPU Module
Processing time
Q2ACPU(S1)
3.2ms
Q3ACPU
2.4ms
Q4ACPU
1.2ms
Summary of Contents for Q2ACPU
Page 1: ......
Page 2: ......
Page 221: ...12 12 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Page 222: ...12 13 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Page 237: ...12 28 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU MEMO ...
Page 271: ...16 13 16 POWER SUPPLY MODULE 4 Names and description of parts of the A66P ...
Page 343: ...21 21 13 MAINTENANCE AND INSPECTION 21 4 2 Replacement of the fuse for an output module ...
Page 357: ...22 12 22 TROUBLESHOOTING ...
Page 359: ...22 14 22 TROUBLESHOOTING MEMO ...
Page 429: ...App 32 APPENDICES Trigonometric function Classification Symbol Description ...
Page 537: ...App 140 APPENDICES REMARK 1 Message 1 An error code is displayed in 2 Alert 1 3 Alert 2 ...
Page 539: ...App 142 APPENDICES 2 Q2ACPU Q2ACPU S1 modules Unit mm inch ...
Page 541: ...App 144 APPENDICES 2 A66P power supply module Unit mm inch ...
Page 543: ...App 146 APPENDICES 3 A35B base unit 4 A38B A38HB A38HBEU base unit Unit mm inch Unit mm inch ...
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