286
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
9 CC-Link/LT Built-in master ability (Only FX3UC-32MT-LT)
9.10 Details of the operation mode
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
9.10.4 TEST mode (self-loop-back test)
In TEST mode, it is not necessary to connect remote stations.
(Set the DIP switches, and turn ON the power of the PLC.)
→
For the test mode execution procedure, refer to Subsection 9.10.5.
Contents indicated by status indicator LEDs and countermeasures
The table below shows the descriptions of errors indicated by the status indicator LEDs and their
countermeasures.
Status
indicator LEDs
Description
Countermeasures
L RUN
On
Self-loop-back test was finished
normally
-
Off
Self-loop-back test was finished
abnormally
(Not on while the self-loop-back test is
being executed)
• Make sure that the power is correctly supplied to
the PLC.
• If the L RUN LED is on even after the above
check, consult a Mitsubishi Electric Distributor.
L ERR.
On
Self-loop-back test was finished
abnormally
• Make sure that the power is correctly supplied to
the PLC.
• If the L RUN LED is on even after the above
check, consult a Mitsubishi Electric Distributor.
Off
Self-loop-back test was finished
normally
(Not on while the self-loop-back test is
being executed)
-
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