14
4 Connecting to power supply and bus system
VEGAPULS SR 68 • Modbus and Levelmaster protocol
47164-EN-180226
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 GND
USB
1
2
4
3
1
3 4 5
2
off on
( )
(
)
(-)
(-)
Fig. 9: Terminal compartment
1 USB interface
2 Slide switch for integrated termination resistor (120 Ω)
3 Modbus signal
4 Voltage supply
Terminal
Function
Polarity
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)
Terminal compartment
