Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
289 | 443
Reset condition
N/A
Record
N/A
Cause
Corrective Actions
The MC command is continuously used
for more than 9 times
The MC command cannot be used continuously for 9 times. Check and reset the program, then
re-download the program.
ID No.
Display on LCD Keypad
Warning Name
Description
59
PLC download fail (PLdF)
PLC download failure
Action and Reset
Action level
PLC download failure due to momentary power loss during the downloading. After the power is
ON again, the PLdF 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
PLC download is forced to stop, so the
written program is incomplete
Check if there is any error in the program and re-download the PLC program.
ID No.
Display on LCD Keypad
Warning Name
Description
60
PLC scan time fail (PLSF)
PLC scan time exceeds the maximum allowable time
Action and Reset
Action level
When the PLC scan time exceeds the maximum allowable time (400 ms), the PLSF 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 scan time exceeds the maximum
allowable time (400 ms)
Check if the source code is correct and re-download the program.