Comtrol Rocket Port Bedienungsanleitung PDF herunterladen (Seite 60)

60 - Loopback Test (RS-232) RocketPort Series/RocketModem IV Driver User Guide: 2000564 Rev. A

Troubleshooting and Technical Support

Loopback Test (RS-

232)

The Loopback Test tests the modem control (hardware handshaking) signals. It

only has meaning in RS-232 mode on serial connector interfaces with full RS-232

signals. If performed under the following conditions, the test will always fail

because full modem control signals are not present:

•RS-422

•RS-485

• RJ11 connectors

Use the following steps to run the Loopback Test.

1. If necessary, start Test Terminal (Page 58, Steps 1

through 2).

2. Click Port > Loopback Test.

This is a pass fail test and will take a second or two to complete. Repeat for

each port that needs testing.

If the Loopback Test and the Send and Receive Test Data tests successfully

complete, then the port is operational as expected.

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.

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Comtrol Rocket Port Bedienungsanleitung Seite 60