27
Table 4.2 Names and settings of parts (1/3)
No.
Name
Application
1)
Operation
status display
LED
Check for the module condition by observing the state of lighting of the
LED.
LED Name
Application
POWER
ON : Power supply on
OFF : Power supply off
RUN
ON : Module is operating normally
OFF : Module is not operating normally
SD
LINK IN/
OUT
ON : Data are being sent to the LINK IN or LINK OUT of
the trunk line
OFF : Data are not being sent to the LINK IN or LINK
OUT of the trunk line
RD
LINK IN/
OUT
ON : Data are being received from the LINK IN or LINK
OUT of the trunk line
OFF : Data are not being received from the LINK IN or
LINK OUT of the trunk line
ERR.
ON
: Transmission rate setting out-of-range error
or communication error occurred
Flickering : Terminating resistor is missing. The module
and CC-Link cables are affected by noise. Or
the transmission rate was changed after
power up.
OFF
: Module is operating normally
RD
LINK 1 to 8
ON : Data are being received from the LINK1 to 8 of the
branch line.
OFF : Data are not being received from the LINK1 to 8 of
the branch line.
