Error Code List - Mitsubishi Electric QJ71MB91 User Manual

11
TROUBLESHOOTING

11.4.3 Error code list

When an error occurs in each processing on the QJ71MB91, the ERR.LED on the
QJ71MB91 lights up, and an error code is stored to the buffer memory of the QJ71MB91.
This section explains respective error details and corrective actions to be taken when an
error occurred.
The "Occurrence" field of the following error code table indicates that an error may occur:
Error Code Error Name
3E8 to 4FFF
H H
-
(1000 to 20479)
7301
H
Switch 1 error
(29441)
7302
H
Switch 2 error
(29442)
7303
H
Switch 3 error
(29443)
7304
H
Switch 4 error
(29444)
7305
H
Switch 5 error
(29445)
7307
H
RAM check error
(29447)
11
- 30 11.4 Error Codes
11.4.3 Error code list
1) When powering on the programmable controller or writing parameters, which
is common to the master and slave functions or not included in 2) to 5) below
2) When using the master function (Automatic communication function)
3) When executing a dedicated instruction
4) When using the slave functions (including entry of MODBUS device
assignment parameters)
5) When performing unit tests (Hardware test/Self-loopback test)
Table11.16 Error code list
Description
Error code issued by the
programmable controller CPU
The setting of the intelligent function
module switch 1 (CH1 mode setting) is
incorrect.
The setting of the intelligent function
module switch 2 (CH1 Communication
speed setting / transmission setting) is
incorrect.
The setting of the intelligent function
module switch 3 (CH2 mode setting) is
incorrect.
The setting of the intelligent function
module switch 4 (CH2 communication
speed / transmission setting) is
incorrect.
The setting of the intelligent function
module switch 5 (CH1, 2 station No.
setting) is incorrect.
An error was detected by the RAM
check made at power-on.
Corrective Action
Refer to the following manual.
QCPU User's Manual
(Hardware Design, Maintenance and
Inspection)
Review the setting of the intelligent
function module switch 1.
Review the setting of the intelligent
function module switch 2.
Review the setting of the intelligent
function module switch 3.
Review the setting of the intelligent
function module switch 4.
Review the setting of the intelligent
function module switch 5.
Any of the QJ71MB91, programmable
controller CPU or base unit may be
faulty.
Perform unit tests.
Occurrence
1) 2) 3) 4) 5)
(Continued on next page)