Vega VEGABAR 86 Operating Instructions Manual page 20

5 Connecting to power supply and bus system
Electronics compartment
Connection compartment
20
( )
Fig. 11: Electronics compartment - double chamber housing
1 Internal connection to the connection compartment
2 For display and adjustment module or interface adapter
( )
4
Fig. 12: Connection compartment
1 USB interface
2 Slide switch for integrated termination resistor (120 Ω)
3 Modbus signal
4 Voltage supply
Terminal Function
1 Voltage supply
2 Voltage supply
3 Modbus signal D0
4 Modbus signal D1
5 Function ground when installing ac-
cording to CSA (Canadian Standards
Association)
4...20mA
+
1 2
5 6
(-)
1 1
USB
MODBUS
power supply
+ 1 2 off on 3 4
(-)
VEGABAR 86 • Modbus and Levelmaster protocol
2
7 8
1
2
5
3
Polarity
+
-
+
-