FISCHER Mess- und Regeltechnik GmbH
Assembly | 3
BA_EN_DE80
11/28
+
5 6 7
Operating voltage
3-conductor with switch output
+
p2
p1
+U
b
-U
b
24 V AC/DC
Output
+Aout 1
Analogue output
+Aout 1
(~)
(~)
1 2 3 4
NO
COM
NC
Switch output
Power supply
Δp
7
6
5
DE80
4
3
2
1
NC
COM
NO
+U
b
-U
b
+U
b
-U
b
Fig. 11:
Electrical connection of a 3-conductor with switch output
+
3-conductor with Modbus
Δp
p2
p1
DE80
5
Operating voltage
1 2 3 4
+U
b
-U
b
BUS-R
BUS-D0
BUS-D1
Modbus
+U
b
-U
b
24 V AC/DC
5
(~)
(~)
Power supply
4
3
2
1
+U
b
-U
b
BUS-R
BUS-D0
BUS-D1
Fig. 12:
Electrical connection of a 3-conductor with Modbus
Connection to an existing Modbus RTU network
Slave 1
Slave 2
Slave 247
5
1 2 3 4
+U
b
-U
b
BUS-R
BUS-D0
BUS-D1
DE80
Auxiliary power
D0
D1
R
Slave x
MASTER
TAP
Bus termination
M12 connection cable
Fig. 13:
Modbus RTU network
