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82 - Troubleshooting and Technical Support DeviceMaster Driver User Guide: 2000595 Rev. A

Sending and Receiving Data (RS-485: 2-Wire)

Sending and

Receiving Data (RS-

485: 2-Wire)

This procedure shows how to use Test Terminal (WCom2) to test two RS-485 (2-

wire, half-duplex) ports.

1. Start Test Terminal.

2. Open two ports RS-485 ports. This example uses COM40 and COM41.

Test Terminal will open two windows, note that both ports show Receiving on

the status bar.

3. Right-click both COM windows and remove the check mark for Receive.

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Comtrol DeviceMaster NS-Link Manuale Utente Pagina 82