Error Code And Error Message Lists; Actions By Error Codes Generated At Function Execution - Mitsubishi MELSEC-Q Series User Manual

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TROUBLESHOOTING

18.4 Error Code and Error Message Lists

This section explains the error codes and messages returned at occurrence of errors.

18.4.1 Actions by error codes generated at function execution

The error code returned when the bus interface function or MELSEC data link function is
executed is returned unchanged as a return value.
(1) Common error codes returned by bus interface functions and MELSEC
Table18.8 Common error codes returned by bus interface functions and MELSEC data link functions
Return value
(HEX)
0 Completed normally
1 Driver not started
(0x1) The driver has not been started.
2 Timeout error
(0x2) A timeout occurred while waiting for response.
66 Already opened
(0x42) The specified channel has already been opened.
67 Already closed
(0x43) The specified channel has already been closed.
69 Processing code error
(0x45) An unsupported processing code was issued.
Station No. error
The specified station No. is incorrect.
70
This station received a request destined for another station. Or, the
(0x46)
station No. corresponds to the own station (0xFF) but the network
No. is not 0.
71 Data reception error (When a RECV request is issued.)
(0x47) Data have not been received.
77 Memory error
(0x4D) Sufficient memory could not be allocated.
85 Network channel No. error (When a SEND/RECV request is issued.)
(0x55) Channel No. error
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18.4.1 Actions by error codes generated at function execution
data link functions
The following provides the error descriptions and corrective actions corresponding to
individual error codes returned in common at the time of execution of the bus interface
functions and MELSEC data link functions.
Error description
* 1 In a single CPU system, reset the C Controller module.
In a multiple CPU system, reset the CPU 1.
Corrective action
Correct the error that occurred when starting
the driver.
Check the status of the standard ROM and
system ROM.
Check if the operating system is running
normally.
Check the operating status and mounting
condition of the accessed station(s).
Retry from the user program.
Increase MD function timeout value in the C
Controller setting utility.
Open once
Close once
Use the supported processing code.
Correct the station No. in the user program.
Wait until data are received.
Terminate other task(s) currently running.
Check if the operating system is running
normally.
Reboot the operating system.
Check the specified channel No. when a
SEND/RECV request is issued.
*1
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