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13 Troubleshooting
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
13. Troubleshooting
13.1 LED Indicator Lamp Check
If an error occurs, check the ON/OFF status of the LED indicator lamps on the PLC to assess the general
meaning of the error. This section does not describe all the LED indicator lamps of the main unit. For details
on the LED indicator lamps, refer to the manual (Hardware Edition) of the PLC main unit.
POWER
(Green)
RUN
(Green)
BATT
(Red)
ERROR
(Red)
POWER
(Green)
RUN
(Green)
BATT
(Red)
ERROR
(Red)
POWER
(Green)
RUN
(Green)
ERROR
(Red)
POWER
(Green)
RUN
(Green)
ERROR
(Red)
ALM
(Red)
FX3U PLC FX3UC-32MT-LT (-2) PLC
POWER
(Green)
RUN
(Green)
BATT
(Red)
ERROR
(Red)
L. RUN
(Green)
L. ERR
(Red)
FX3UC (D, DS, DSS) PLC
FX
3S PLC FX3GC PLC
POWER
(Green)
RUN
(Green)
ERROR
(Red)
ALM
(Red)
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