Digi Port Server TS MEI RS-485 Serial Line Termination - viewLinc 5.1 - VNET

Connecting Modbus devices to viewLinc 5.1 Technical Note

Document code: B211873EN
Revision: B
Language: English
Product: viewLinc 5.1; VNET
Document type: Technical note

There are 2 termination options for 2-wire RS-485:

Turn the Termination DIP switch to the ON position as shown in Figure 1
Turn the Termination DIP switch to the OFF position and install a 120 ohm resistor at the end of the RS-485 line.

Figure 1. Termination DIP switch location

If 4-wire (full-duplex) RS-485 settings in software are needed, see Cabling Pin Outs for Digi PortServer TS MEI RS-485.