Wiring; Pin Labeling Among Devices - GE PanaFlow MV80 User Manual

4.2.4 Wiring

An RS485 daisy chained network configuration, as shown in Figure 76 below, is recommended. Do not use a star, ring,
or cluster arrangement.
RS-485 Master
RS-485 –
RS-485 +
RS-485 GND

4.2.5 Pin Labeling Among Devices

•
RS-485 – = "A" = "TxD–/RxD–" = "Inverting pin"
•
= "B" = "TxD+/RxD+" = "Non-Inverting pin"
RS-485 +
•
= "GND" = "G" = "SC" = "Reference"
RS-485 GND
PanaFlow™ MV80 & MV82 User's Manual
Other Device 1
Figure 76: RS-485 Modbus Wiring
Vortex Meter Other Device 2, etc.
Chapter 4. Serial Communications
85