Mitsubishi Electric QJ71DN91, User Manual

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MELSEC-Q
4 FUNCTIONS
(3) Reading communication error information
Programmable controller CPU QJ71DN91 Slave node (MAC ID)
SET Y12
X02
FROM
Message Comm.
Request
1)
2)
5)
Message
Comm.
Command area
0110
H
011F
H
4)
2)
TO
I/O
communication
X05
X02
FROM
X05
Message
Comm.
Result area
0120
H
012F
H
Message
Comm.
Data area
0130
H
01A7
H
Message
communication
complete
Message Comm.
Completion
Class 1
Attribute
Attribute
Instance
Class
Attribute
3)
Slave
information
storage area
Instance
Instance
The status of each slave station is stored during I/O communication.
Attribute
Attribute
Attribute
Attribute
Attribute
Attribute
Instance
1) Set command data in Message Communication Command (address:
0110
H
to 011F
H
).
2) When Message Communication Request (Y12) is set to on, the
communication error information of the relevant slave node, which has
been accumulated in the QJ71DN91, is stored in Message
Communication Data (address: 0130
H
to 01A7
H
).
3) Upon completion of reading, the processing result is stored in
Message Communication Result (address: 0120
H
to 012F
H
), and
Message Communication Completion (X02) is set to on.
4) The slave node’s communication error information stored in Message
Communication Data (address: 0130
H
to 01A7
H
) is read out to the
programmable controller CPU.
5) If failed, Message Communication Error Signal (X05) is set to on.
Read data in Message Communication Result (address: 0120
H
to
012F
H
) to identify the cause of the error.