Mitsubishi QJ71MB91 User Manual

11 - 7
11.1 Troubleshooting
11
TROUBLESHOOTING
(Continued on next page)
Table11.3 Troubleshooting for other symptoms (Continued)
No. Symptom Check point Corrective action Reference
5
The diagnostic counter
has counted up.
Master
Received exception error
count
Check the exception code returned from
the slave by the Error log (address: 0CFE
H
to 0DFF
H
) in the buffer memory, and
examine the slave to solve the problem.
Section 11.3
Section 11.4.1
No-response count
Refer to the corrective actions for the
response monitoring timer timeout error
(error code: 7378
H to 7379H).
Section 11.3
Section 11.4.3
Received NAK count
Examine the slave that returned the error,
and solve the problem.
-
Received busy count
Message discard count
• When there is another master on the
same network, disconnect the master.
• When a response is returned after
occurrence of the response monitoring
timer timeout error, refer to the
corrective actions for the error (error
code: 7378
H to 7379H).
• When any of the other stations has sent
a message without receiving a request,
examine the station.
Section 11.3
Section 11.4.3
Slave
Message discard count
There is no problem as messages
addressed to other stations are discarded.
Section 11.3
Exception error count
Check the Error log (address: 0CFE
H
to
0DFF
H
) in the buffer memory and take
corrective actions for the error code.
Section 11.4.1

Mitsubishi QJ71MB91 Specifications

General

Brand	Mitsubishi
Model	QJ71MB91
Category	Controller
Language	English