
8
Operation
DHR21B/41B controller
Manual – DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
71
"Link/Activity" LEDs
The two LEDs "Link" (green) and "Activity" (yellow) integrated in the RJ45 plug con-
nectors (X30-1, X30-2) display the state of the Ethernet connection.
X3
0
-1
X3
0
-2
LED "Link"
LED "Activity"
2104908939
"Link" LED
Status LED
Meaning
Green
There is an Ethernet connection.
Off
There is no Ethernet connection.
"Activity" LED
Status LED
Operating status
Yellow
Data is currently being exchanged via Ethernet.
8.3.2
LEDs in EtherNet/IP and Modbus/TCP mode
LEDs "L13" and "L14" indicate the current state of the DHR21B/41B controller and the
EtherNet/IP
TM
or Modbus/TCP system.
LED "L13" (NETWORK STATUS)
Status LED
Operating status
Green
There is a controlling connection to the fieldbus system.
Green, flashing
No controlling connection.
Green/red, flashing
The controller performs a self-test.
Red, flashing
The previously established controlling connection has timed
out. The status can be reset by restarting the communication.
Red
Conflict detected in the assigned IP addresses. Another node
in the network uses the same IP address.
Off
No IP address parameter has been assigned to the controller
yet.
LED "L14" (MODULE STATUS)
Status LED
Meaning
Off
The option card is either not supplied with voltage, or it is
faulty.
22900055/EN – 08/2016
Содержание DH 21B Series
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