Troubleshooting - Toshiba nv Series Instruction Manual

6.2 Troubleshooting

If the status display LED of the product shows a different status from the normal status display LED which
described in Chapter 2, or if an error is detected in the human interface station, stop the product immediately.
Please contact our service representative.
■Failure diagnosis of DN912 module body
The LEDs display on the front of the DN912 indicates status of the module.
Refer to the following table for diagnosis.
Status name
Normal operation
Abnormal operation
■TC-net I/O loop failure diagnosis
There is LEDs on the front of DN912 that indicates status of TC-net T/O loop.
Refer to the following table for diagnosis.
Status Status display LED
name LP SCAN
Normal Lighting Lighting
Abnormal Light off Light off
■DeviceNet communication status failure diagnosis
There is LEDs on the front of DN912 that indicated the communication status of DeviceNet. Refer to the
following table for diagnosis.
Status name
Normal operation
Abnormal
operation
Table 6-4 Diagnosis 1 by the LED of DN912
LED name
RUN
Lighting Light off
Light off Lighting
Table 6-5 Diagnosis 2 by the LED of DN912
Transmission loop connector LED
LINK1 ACT1
Lighting Blinking
Light off Other
than
above
Table 6-6 Diagnosis 3 by the LED of DN912
LED name
NS MS
Green lighting Green lighting
Red lighting／ Red lighting／
Blinking Blinking
Unified Controller nv Series DeviceNet Module DN912 Instruction Manual
Status
ERR
Normal
Module error
LINK2 ACT2
Lighting Blinking
Light off Other
than
above
Status
Normal ―
Error Refer
contents in Chapter 2 p.18 and
identify the cause.
6.2 Troubleshooting
Interaction
―
Module replacement.
Please contact
service representative.
Status Interaction
Normal ―
I/O
Please contact our
Loop
service
error
representative.
Interaction
to the LED display
our
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