Mitsubishi Electric QJ71MB91 User Manual page 316

11
TROUBLESHOOTING
No. Symptom
The QJ71MB91 responds
9
slowly.
11
- 10 11.1 Troubleshooting
Table11.3 Troubleshooting for other symptoms (Continued)
Check point
Check the specifications using the
processing time performance expression
of the QJ71MB91 slave function.
When accessing the programmable
controller CPU device in the slave
function, check if too many accesses to
the programmable controller CPU are
made from other modules or the sequence
program.
Corrective action
The processing time must be within the
range indicated by the result of the
performance expression.
The processing time may be slower than
the result of the performance expression if
two channels are used simultaneously.
Reduce the load of the programmable
controller CPU.
Reference
Appendix 3
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