Manual – Controllers DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
27
4
Installing the DH.21B/41B option
Assembly and Installation Notes
4.7.5 System bus Ethernet 1 connection (X36)
The Ethernet 1 interface (X36) serves as system bus master of the fast SBUS
Plus®
system bus.
4.7.6 Ethernet 2 interface connection (X37)
You can connect an engineering PC to the Ethernet 2 interface (X37).
Using the Ethernet 2 interface, the DH.21B/41B option can also exchange data with
another controller via UDP/TCP.
4.7.7 LEDs of the DH.21B/41B option
The DH.21B/41B option comes equipped with 10 LEDs (L1 through L10) that indicate
the present state of the option and its interfaces.
LED L1
(CAN 1 state)
LED L1 indicates the state of the CAN 1 system bus.
2102467211
PC COM
X35
X36
X37
2
4
6
1
3
5
X34
1
2
3
1
3
4
2
1
2
3
1
2
3
1
2
3
X32X33
2
4
6
1
3
5
8
10
7
9
X31
T1
S1
L1 L2 L3 L5XM L6 L7 L8 L9L4 L1 0
State of the L1 LED Diagnostics Remedy
Orange The CAN 1 system bus is being
initialized.
-
Green The CAN 1 system bus is being
initialized.
Flashing green
(0.5 Hz)
The CAN 1 system bus is currently in
SCOM suspend mode.
Flashing green
(1 Hz)
The CAN 1 system bus is currently in
SCOM On mode.
Red The CAN 1 system bus is off
(BUS-OFF).
1. Check and correct the cabling of the
CAN 1 system bus.
2. Check and correct the baud rate set
for the CAN 1 system bus.
3. Check and correct the terminating
resistors of the CAN 1 system bus.
Flashing red
(1 Hz)
Warning on the CAN 1 system bus. 1. Check and correct the cabling of the
CAN 1 system bus.
2. Check and correct the baud rate set
for the CAN 1 system bus.
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