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MELSEC-Q
9 TROUBLESHOOTING
9.2.2 Execution error codes of message communication (using the master function only)
The execution error codes are stored in buffer memory address 0121
H
.
At normal end: 0
When abnormal: Execution error code
0121
H
When abnormal: Execution error code
Buffer memory
At normal completion: 0
(1) When reading the communication error information
Error
code
(Dec.)
Error
detection
Description Corrective action
161 QJ71DN91 The specified slave node number is other than 0 to 63. • Specify a slave node number between 0 and 63.
(2) When reading/writing/resetting attributes
Error
code
(Dec.)
Error
detection
Description Corrective action
2 Slave node
The object could not use the resource required to execute the
requested service.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
8 Slave node
The requested service was not installed, or it was not defined for
this object class/instance.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
9 Slave node Invalid attribute data was detected.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
11 Slave node
The object is already placed in the mode/status that is requested
by the service.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Verify the current status by reading attributes.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
12 Slave node
The object cannot execute the requested service in the current
mode/status.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Verify the current status by reading attributes.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
14 Slave node
A request to change an attribute whose change is inhibited was
received.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
15 Slave node Permission/privilege check failed.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
16 Slave node
The requested service cannot be executed in the current device
status.
• Check whether or not the specified MAC ID, class ID, instance
ID and attribute ID are correct.
• Referring to the slave node manual, check the condition under
which the slave node notifies this error, and take an appropriate
action.
17 QJ71DN91 Slave node did not respond.
• Check the entire network and slave node statuses such as
whether or not a slave node is down or a terminal resistor is
disconnected.