VEGA VEGABAR 81 Modbus and Levelmaster protocol - Operating Instructions - Manual (Page 23)

23
5 Connecting to power supply and bus system
VEGABAR 81 • Modbus and Levelmaster protocol
46293-EN-131107
Information:
The connection of an external display and adjustment unit is not pos-
sible with this double chamber housing.
+
+
power supply
MODBUS
D0 D1 IS GN
D
USB
1
2
4 3
1 3 4 5 2 off on ( )
(
)
(-)
(-)
Fig. 18: Connection compartment
1 USB interface
2 Slide switch for integrated termination resistor (120 Ω)
3 Voltage supply
4 Modbus signal
Terminal Function Polarity
1 Voltage supply +
2 Voltage supply -
3 Modbus-Signal D0 +
4 Modbus-Signal D1 -
5 Function ground with installa-
tion according to CSA
5.4 External housing with version IP 68 (25 bar)
Fig. 19: VEGABAR 81 in IP 68 version 25 bar with axial cable outlet, external
housing
1 Transmitter
2 Connection cable
3 External housing
Connection compartment
Overview