KEYENCE IV Series - Manual (Page 288)

A-32 - IV Series User's Manual (Monitor) -
A
Remedy when the Monitor cannot be Connected with the Sensor
Confirming the status by observing the indicator light of the sensor
LINK/ACT (link/activity) indicator light
Displays the link status with the network.
LINK/ACT indicator
light
Status of the
LINK/ACT
indicator light
Status Remedy
Green
ON
Correct link with the monitor
or the Ethernet switch.
Link is normal.
When connection with the monitor is not possible, check
the STATUS indicator light.
Blink
Correct link with the monitor
or the Ethernet switch.
Data are being sent and
received.
OFF
No correct link with the
monitor or the Ethernet
switch.
y Power is not supplied to this
unit or the connection target.
y The cable is not connected
correctly.
y Supply power to the sensor.
y Supply power to the monitor or the Ethernet switch of
the connection target.
y Connect the cable correctly.