Specifications

I Alarms
Multi CPU Errors (A)
I - 62
A01 MULTI CPU ERROR 4351
Details
The designated CPU module cannot execute the exclusive instruction for multi-CPUs high-
speed communication set in the program.
- The instruction name is not correct.
- The designated instruction is not supported by the CPU module.
Remedy
- Read the common information of the error using a programming tool, check error step cor-
responding to its numerical value (program error location), and correct the problem.
A01 MULTI CPU ERROR 4352
Details
- An incorrect number of devices were designated with the exclusive instruction for multi-
CPUs high-speed communication set in the program.
Remedy
- Read the common information of the error using a programming tool, check error step cor-
responding to its numerical value (program error location), and correct the problem.
A01 MULTI CPU ERROR 4353
Details
- An unusable device was designated with the exclusive instruction for multi-CPUs high-
speed communication set in the program.
Remedy
- Read the common information of the error using a programming tool, check error step cor-
responding to its numerical value (program error location), and correct the problem.
A01 MULTI CPU ERROR 4354
Details
- An unusable character string was designated with the exclusive instruction for multi-CPUs
high-speed communication set in the program.
Remedy
- Read the common information of the error using a programming tool, check error step cor-
responding to its numerical value (program error location), and correct the problem.
A01 MULTI CPU ERROR 4355
Details
- An invalid number of read/write data (number of request/response data) was designated
with the exclusive instruction for multi-CPUs high-speed communication set in the program.
Remedy
- Read the common information of the error using a programming tool, check error step cor-
responding to its numerical value (program error location), and correct the problem.
A01 MULTI CPU ERROR 5000
Details
- The scan time of the initial execution type program exceeded the initial execution watch time
specified in the PLC RAS setting of the PLC parameter dialog box.
Remedy
- Read the individual information of the error with a programming tool, check its value (time),
and shorten the scan time.
A01 MULTI CPU ERROR 5001
Details
- The program scan time exceeded the WDT value specified in the PLC RAS setting of the
PLC parameter dialog box.
Remedy
- Read the individual information of the error with a programming tool, check its value (time),
and shorten the scan time.
- Resolve the endless loop caused by jump transition.
A01 MULTI CPU ERROR 5010
Details
- The program scan time exceeded the constant scan time specified in the PLC RAS setting
of the PLC parameter dialog box.
- The low speed program execution time specified in the PLC RAS setting of the PLC param-
eter dialog box exceeded the excess time of the constant scan.
Remedy
- Review the constant scan setting time.
- Review the constant scan time and low speed program execution time in the PLC parameter
so that the margin time of constant scan may be fully reserved.
A01 MULTI CPU ERROR 7000
Details
- In the operating mode of a multiple CPU system, a CPU error occurred at the CPU where
"All station stop by stop error of CPU " was selected.
- In a multiple CPU system, a CPU module incompatible with the multiple CPU system was
mounted.
Remedy
- Read the individual information of the error using the GX Works2 / GX Developer, check the
error of the PLC resulting in CPU module fault, and remove the error.
A01 MULTI CPU ERROR 7002
Details
- There is no response from the target CPU module in a multiple CPU system during initial
communication.
- In a multiple CPU system, a CPU module incompatible with the multiple CPU system was
mounted.
Remedy
- Reset restart the CPU module. If the same error is displayed again, this suggests the hard-
ware fault of any of the CPU modules.
Contact your local service center.