Allflex AFX-100 Manual do Utilizador descarregar pdf (Página 34)

Rev Australasia V2.3 12/04

34 34

Now we know that the panel reader is both reading and communicating effectively. This test

proves that the cable is also functioning. The P signal means that the PC is communicating

with the Reader and the returned Tag ID means that the reader is communicating with the PC.

You should then check other equipment such as the scale head or computer to confirm they

are operating correctly.

Testing a Cable with a Multi-Meter

A useful test tool to have available is a Multi-Meter. In particular, a model that can measure

DC volts and ideally has an audible continuity (Ohms) selection. Multi-meters can be

purchased from electronics stores and can range in price from $10 upwards. If you were

anticipating buying a multi-meter to use specifically for this equipment, a cheap unit around

$10 - $30 will be sufficient.

If you have tested the communications using HyperTerminal © or Configurator © and

suspect that the cable may be damaged you can use a multi-meter to test for broken wires.

Standard communications cables as used for the Panel Reader, are based upon 3 wires.

These wires are Signal Ground, Transmit and Receive. The cable provided has a 9 pin

female D connector on one end and a 4 pin male military connector on the other. (As shown

in the picture below).

he D connector is marked with numbers 1 through to 9 and the military with letters A, B,

C & D.

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Allflex AFX-100 Manual do Utilizador Página 34