No User Plc; Illegal Plc - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
10 User PLC Alarms (U)
10User PLC Alarms (U)
(Note) U10 Illegal PLC (User PLC is illegal)
- "xx" in the lower 16 bits of the sub-status 1 indicates the program No. (0x01 to 0x78(in the hexadecimal
form))
- The sub-alarm No. "yy" of sub- status 1 indicates the project No. ("yy" is not displayed when the maximum
number of projects is 1)
(Note) For details of user PLC alarms (U), refer to the PLC Development Manual.
U01

No user PLC

Details
No sequence program is included in the built-in ROM or temporary memory area.
(1) Sequence program is not stored in the built-in ROM.
(2) Sequence program is not written from the GX Developer or internal PLC edit function.
(3) Sequence program cannot be read due to broken built-in ROM.
(4) No large capacity PLC additional specifications.
Remedy
(1) Write the sequence program from the GX Developer or internal PLC edit function, and then execute the
built-in ROM writing.
(2) Check the presence of additional specification "Large PLC capacity" and reconsider the storable size.
(3) If (1) or (2) does not solve the problem, there is a possibility that built-in ROM is broken.
U10

Illegal PLC

Details
Software instruction interruption illegal
An error was found in data for the sequence program in execution.
(1) Sequence program stored in the built-in ROM is broken.
(2) Sequence program under development (before writing into F-ROM) is broken.
Remedy
Contact Mitsubishi.
U10 Illegal PLC
Details
A H/W error was detected during the PLC execution.
Remedy
Contact Mitsubishi.
U10 Illegal PLC
Details
The PLC system execution preparation failed.
Remedy
Contact Mitsubishi.
U10 Illegal PLC
Details
Number of ladder over (at PLC system startup)
The total number of "ladder files" stored in built-in ROM exceeded the maximum.
Remedy
Write "sequence program", "comment file", "PLC message file", and "source information file" again.
IB-1501279-H
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0x04xx.yy
0x100*
0x110*
0x120*
110
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Number of steps
-
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