Communication Test - Mitsubishi QJ71DN91 User Manual

4 SETUP AND PROCEDURES BEFORE OPERATION

4.6 Communication Test

Connect the QJ71DN91 and the DeviceNet
station of the communication counterpart
with a DeviceNet cable.
Match the communication speed of the
QJ71DN91 with that of the DeviceNet station
of the communication counterpart.
(Set the mode switch between A and C.)
Turn ON the power of the network and the
power of the DeviceNet station of the
communication counterpart.
Turn ON the power of the QJ71DN91.
(The MS LED flashes in green.)
[LED display]
Performing communication test
QJ71DN91
RUN MS
NS
ERR.
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The transmission test and reception test are performed by connecting the QJ71DN91
and other DeviceNet devices with a communication cable. There is no restriction on
the node number setting of the communication counterpart.
Execute the test in the following sequence:
Start
The MS LED goes off and
the ERR. LED illuminates.
Check
the QJ71DN91's LEDs
The MS LED illuminates in green.
Normal completion
Flashes the MS LED.
Abnormal completion
See buffer memory address 62F
"hardware test result storage area."
Normal completion
Illuminates the MS LED in green.
QJ71DN91
MS
RUN
NS
Turns OFF the ERR. LED goes off.
ERR.
Abnormal completion
Turns OFF the MS LED goes off.
QJ71DN91
RUN MS
NS
Turns ON the ERR. LED illuminates.
ERR.
MELSEC-Q
,
H
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