Chapter 13 Warning CodesC2000 Plus
ID No. Display on LCM Keypad Warning Name Description
55
Function defect
(PLFF)
Function code error during PLC operation
Action and Reset
Action condition
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
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 th
warning shows. This is a normal warning, please download the program.