M800/M80/E80/C80 Series Alarm/Parameter Manual
14 Multi CPU Errors (A) [C80]
A01
WDT error
Details
The scan time exceeded the execution monitoring time set in parameter.
The 2nd or later scan time exceeded the execution monitoring time set in the CPU parameters.
The execution time of the fixed scan interrupt program exceeded the interrupt execution interval.
Remedy
Check the detailed information (time information) of the error by executing module diagnostics using the
engineering tool, check the time setting, and take either of the following actions.
(1) Check and correct the program so that it can be executed within the execution monitoring time set in pa-
rameter.
(2) Change the execution monitoring time setting to an appropriate value.
Check and correct the fixed scan interrupt program so that the processing completes within the interrupt
execution interval. If the same error code is displayed again, the possible cause is a hardware failure of the
CPU module. Please consult your local Mitsubishi representative.
A01
Invalid interrupt
Details
Even though an interrupt was requested, there is no interrupt factor.
Remedy
Take measures to reduce noise.
Reset the CPU module, and run it again. If the same error code is displayed again, the possible cause is
a hardware failure of the CPU module, base unit, or module (I/O module or intelligent function module) con-
nected. Please consult your local Mitsubishi representative.
A01
Invalid interrupt
Details
Even though an interrupt was requested, there is no interrupt factor.
Remedy
Take measures to reduce noise.
Reset the CPU module, and run it again. If the same error code is displayed again, the possible cause is
a hardware failure of the CPU module, base unit, or module (I/O module or intelligent function module) con-
nected. Please consult your local Mitsubishi representative.
A01
Invalid interrupt
Details
An interrupt was requested from the module with no interrupt pointer setting.
Remedy
Check and correct the interrupt pointer setting in the module parameters.
Take measures so that no interrupt is requested from the module with no interrupt pointer setting.
Check and correct the interrupt setting in the buffer memory of the intelligent function module.
Correct the BASIC program executed in the QD51.
A01
Inter-module synch signal error
Details
An execution interval error of the synchronization interrupt program has been detected.
An inter-module synchronization error has been detected.
Remedy
Take measures to reduce noise.
Reset the CPU module, and run it again. If the same error code is displayed again, the possible cause is
a hardware failure of the CPU module, base unit, extension cable, or module (I/O module or intelligent func-
tion module) connected. Please consult your local Mitsubishi representative.
IB-1501279-H
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2501
2520
2521
2522
2610