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 Normal completion
1 Driver not started
(0x1) The driver has not been started.
2 Timeout error
(0x2) The timeout occurred while waiting for the response of process.
66 Already opened
(0x42) Selected channel has been already opened.
67 Already closed
(0x43) Selected channel has been already closed.
69 Processing code error
(0x45) An unsupported processing code was issued.
Station specification error
The specified station is incorrect.
70
A process that should have been requested to other station was
(0x46)
requested to the own station. Or, the station number corresponds to
the own station (0xFF) but the network number is not 0.
71 No reception data error (during RECV request)
(0x47) Data has not been received.
77 Memory error
(0x4D) Enough memory could not be secured.
Network channel number error (When a SEND / RECV request is
85
issued.)
(0x55)
Channel number error.
102 Data sending error
(0x66) Data sending has failed.
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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 configuration, reset the C Controller module.
In a multiple CPU configuration, reset CPU No.1.
Corrective action
Correct the error occurred when starting the
driver.
Check the status of the system ROM drive.
Check if the system is operating normally.
Check the operation status of the access
station(s).
Retry.
Set MD function timeout value long by the C
Controller setting utility.
Open once
Close once
Use the supported processing code.
Correct the specification of the station number
in the user program.
Wait until data is received.
Terminate other application(s) currently
running.
Check if the system is operating normally.
*1
Reboot the system.
Check the specified channel number when a
SEND / RECV request is issued.
Retry.
Check if the system is operating normally.
*1
Reboot the system.
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