Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
287 | 443
Warning setting parameter
N/A
Reset method
Check if the program is correct and download the program again. If the fault does not exist, the
warning automatically clears.
Reset condition
N/A
Record
N/A
Cause
Corrective Actions
The program detects internal source code
error during PLC operation
Disable PLC
Reset the PLC program (Pr.00-02=6)
Enable PLC
Re-download the PLC program
ID No.
Display on LCD 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 occurs.
Action time
Immediately act when the fault is detected
Warning setting parameter
NA
Reset method
Check if the program is correct and download the program again. 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 occurs.
This is a normal warning, please download the program.
ID No.
Display on LCD Keypad
Warning Name
Description
56
Checksum error (PLSn)
PLC checksum error
Action and Reset
Action level
PLC checksum error is detected after the drive is powered on, then PLSn warning occurs.
Action time
Immediately act when the fault is detected
Warning setting parameter
NA
Reset method
Check if the program is correct and download the program again. If the fault does not exist, the
warning automatically clears.