Mitsubishi Electric M800 Series Manual page 133

M800/M80/E80/C80 Series Alarm/Parameter Manual
10 User PLC Alarms (U)
U10 Illegal PLC
Details
Caution; Ladder program writing during RUN is disabled (common pointer is used in high-speed processing)
With RUN write is ON, high-speed program with common pointer is running. RUN write is not available with this
condition.
Remedy
RUN write is not available when high-speed processing with common pointer is running. Change the high-
speed processing program to the one without common pointer.
U10 Illegal PLC
Details
Caution; Ladder program writing during RUN is disabled (high-speed processing size is exceeding)
With RUN write ON, the execution size of high-speed processing program has exceeded 4000 steps. RUN
write is not available with this condition.
Remedy
RUN write is not available when execution size of high-speed processing program exceeds 4000 steps. Edit
the high-speed processing program to reduce the execution size to 4000 steps or less.
(When multi-project is valid, edit the program to reduce the execution size to 4000 steps or less in total of all
the project.)
U10 Illegal PLC
Details
Caution; Ladder program writing during RUN is disabled (number of labels in high-speed processing is beyond
the capacity)
With RUN write ON, the number of local labels in high-speed processing program has exceeded 256. RUN
write is not available with this condition.
Remedy
RUN write is not available when the number of local labels in high-speed processing program exceeds 256.
Edit the high-speed program to reduce the number of local labels to less than 256.
(When multi-project is valid, edit the program to reduce the number of local labels to less than 256 per project.)
U10 Illegal PLC
Details
Software exceptional interruption (BCD instruction error) has occurred.
With BCD and DBCD instructions, BIN value outside its input range was attempted to be converted into BCD.
Remedy
Check the usage of BCD, DBCD instructions existing in the steps occurred.
U10 Illegal PLC
Details
Software exceptional interruption (BIN instruction error) has occurred.
With BIN and DBIN instructions, BCD value outside its input range was attempted to be converted into BIN.
Remedy
Check the usage of BIN, DBIN instructions existing in the steps occurred.
U10 Illegal PLC
Details
Software exceptional interruption (Bus error) has occurred.
Remedy
Contact Mitsubishi.
IB-1501279-H
0x71xx.yy
0x720*
0x730*.yy
0x80xx.yy
0x81xx.yy
0x82xx.yy
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