Delta MS300 Series User Manual page 523

Chapter 13 Warning CodesMS300
ID No. Display on LCD Keypad
56
Action Condition
Action Time
Warning Setting Parameter
Reset Method
Reset Condition
Record
Cause
The program detects checksum
error during PLC operation
Warning Name
Checksum error
(PLSn)
Action and Reset
PLC checksum error is detected after the drive is powered on, then PLSn
warning occurs.
Immediately act when the fault is detected
NA
Check if the program is correct and download the program again. If the fault
does not exist, the warning automatically clears.
N/A
N/A
1. Disable PLC
2. Reset the PLC program (Pr.00-02 = 6)
3. Enable PLC
4. Re-download the PLC program
514
Description
PLC checksum error
Corrective Actions