Chapter 13 Warning Codes|MH300
ID No.
Display Warning Name Description
56
Checksum error
(PLSn)
PLC checksum error
Action and Reset
Action condition
PLC checksum error is detected after power on, then PLSn war
shows
Action time Immediately displays when the fault is detected
Warning setting parameter NA
Reset method
Check if the program is correct and re-download the program. If the
does not exist, the warning automatically clears.
Reset condition N/A
Record N/A
Cause Corrective Actions
T
he program detects checksum
error during PLC operation
1. Disable PLC
2. Remove PLC program (Pr.00-02 = 6)
3. Enable PLC
4. Re-download PLC program
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