Chapter 13 Warning CodesC2000-HS
13-24
ID No. Display on LCM Keypad Warning Name Description
54
PLC buffer overflow
(PLor)
PLC register overflow
Action and Reset
Action level
When PLC runs the last command and the command exceeds the maximum
capacity of the program, the PLor warning shows.
Action time Immediately displays when the fault is detected
Warning setting parameter N/A
Reset method
Check if the program is correct and re-download the program. If the fault does
not exist, the warning automatically clears.
Reset condition N/A
Record N/A
Cause Corrective Actions
The program detects source code
error during PLC operation
1. Disable PLC
2. Delete PLC program (Pr. 00-02=6)
3. Enable PLC
4. Re-download PLC program
ID No. Display on LCM Keypad Warning Name Description
55
Function defect
(PLFF)
Function code error during PLC operation
Action and Reset
Action level
The program detects incorrect command (unsupported command) during PLC
operation, then PLFF warning 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 fault does
not exist, the warning automatically clears.
Reset condition N/A
Record N/A
Cause Corrective Actions
The PLC runs an incorrect
command during operation
When starting the PLC function and there is no program in the PLC, the PLFF
warning shows. This is a normal warning, please download the program.
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