Mitsubishi Electric MELSEC iQ-R Series User Manual page 60

Situation
When the data consistency dedicated
instruction is used, the transmission
delay time is abnormally long.
Data consistency cannot be maintained
even though the data consistency
dedicated instruction is used.
If the above action does not solve the problem, perform the hardware test to check for hardware failure. ( Page 52
Checking the Module Status)
4 TROUBLESHOOTING
58
4.5 Troubleshooting by Symptom
Check item
Is data consistency dedicated instruction executed?
Is the data refreshed with methods other than the data
consistency dedicated instruction?
Action
• Execute the data consistency dedicated instruction at
every scan.
• Do not refresh the data with methods other than the
data consistency dedicated instruction.