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8. LED Display
8.1 LED display
Details of the LED display are shown as follows.
LED
name
Content
PWR
Power supply and EEPROM
writing status
Off
Power is not supplied
Green On
Power is supplied
Green flashing
EEPROM writing
ALM
Alarm status.
Off
Normal status
Red On
Alarm is generated
L ERR
Error status
(
CC-Link
)
Off
Normal status
Red On
Error is generated
Red flashing
L RUN
Communication status
(
CC-Link
)
Off
Communication disconnected
Green On
Communicating
Green flashing
Error is generated
8.2 Controller status and LED display
Controller state and LED display is shown below.
Controller state
LED name and display
PWR
ALM
L ERR
L RUN
Supply of power
-
-
Off
Off
CPU ROM
・
RAM check error for CC-Link
communication
-
-
Red On
Green On
Normal communication of CC-Link
-
-
Off
Green On
The setting of Rotary switch is changed when
supplying of power
-
-
Red
flashing
Off
CC-Link
communication
area
CC-Link communication stop
-
-
Off
Off
CC-Link CRC error
-
-
Red On
Off
STATION No. error
-
-
Red On
Green
flashing
Communication speed error
(unused range)
-
-
Red
flashing
Green On
WDT time-out error
-
-
Red
flashing
Green
flashing
Motor control
area
Alarm is generated
Off
Red On
-
-
System error is generated
Green On
Red On
-
-
EEPROM writing
Green
flashing
-
-
-
-
: The LED display is unrelated
Caution
Do not turn off the controller input power or remove the cable during EEPROM writing. (PWR (green)
light flashing).
Data (step data, parameter) might not be written correctly