Wdt Error; Invalid Interrupt; Inter-Module Synch Signal Error; Parameter - Mitsubishi Electric M800 Series Manual

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.
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