Mitsubishi Electric M800 Series Manual page 134

M800/M80/E80/C80 Series Alarm/Parameter Manual
10 User PLC Alarms (U)
U10 Illegal PLC
Details
Software exceptional interruption (Unmounted instruction error) has occurred.
(1) When the bit selection parameter (#6452 bit6) "branch destination label check valid" is set to "0", jumped to
an undefined label.
(2) Sequence program in execution is broken.
Remedy
(1) Set the bit selection parameter (#6452 bit6) "branch destination label check valid" to "1" and check the
branching step to the undefined label.
(2) Contact Mitsubishi.
U10 Illegal PLC
Details
Software exceptional interruption (Instruction format error) has occurred.
Remedy
Contact Mitsubishi.
U10 Illegal PLC
Details
Software exceptional interruption (Instruction bus error) has occurred.
(1) When the bit selection parameter (#6452 bit6) "branch destination label check valid" is set to "0", jumped to
an undefined label.
(2) Sequence program in execution is broken.
Remedy
(1) Set the bit selection parameter (#6452 bit6) "branch destination label check valid" to "1" and check the
branching step to the undefined label.
(2) Contact Mitsubishi.
U10 Illegal PLC
Details
Software exceptional interruption (CALL/RET instruction error) has occurred.
Remedy
Contact Mitsubishi.
U10 Illegal PLC
Details
Software exceptional interruption (memory area error) has occurred.
Remedy
Contact Mitsubishi.
U10 Illegal PLC
Details
Software exceptional interruption (ASYNC BUS error) has occurred.
Remedy
Contact Mitsubishi.
U50 PLC stopped
Details
The ladder is stopped.
Remedy
Run the PLC.
0x83xx.yy
0x84xx.yy
0x85xx.yy
0x86xx.yy
0x87xx.yy
0x8Bxx.yy
117
Number of steps
Number of steps
Number of steps
Number of steps
Number of steps
Number of steps
IB-1501279-H