Delta MS300 Series User Manual page 522

ID No. Display on LCD Keypad
55
Action Condition
Action Time
Warning Setting Parameter
Reset Method
Reset Condition
Record
Cause
The PLC runs an incorrect
command during operation
Warning Name
Function defect
(PLFF)
Action and Reset
The program detects incorrect command (unsupported command) during PLC
operation, then PLFF 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
When starting the PLC function and there is no program in the PLC, the PLFF
warning occurs. This is a normal warning, please download the program.
513
Chapter 13 Warning CodesMS300
Description
Function code error during PLC operation
Corrective Actions