Advantech ADAM-4550 user manual 2.3 RS-485 Communication Wiring, Software Configuration

2.3 RS-485 Communication Wiring

We recommend using shielded-pair cables which comply with the EIA RS-485 standard to reduce interference in an ADAM network. Only one set of twisted-pair cables is required to transmit both DATA and RTS signals. We advise that the fol- lowing standard colors (as indicated on the mod- ules) be used for the communication lines:

DATA+ ð (Y) Yellow

DATA- ð (G) Green

2.4 Software Configuration

The ADAM-4550 comes with a setup disk that contains software for the following:

•Baud rate configuration

•Address configuration

•Statistical RF error rate retrieval

•Firmware upload tool for firmware upgrades

Note: 1. Before turning on the power and configuring the ADAM-4550, make sure it is connected to your host computer through an RS-232 cable and that the host computer is on. The ADAM-4550 will automatically detect the cable and set itself as a DTE/DCE according to the RS-232 port of the connected host computer. If there is no RS-232 cable connected to the host computer, the ADAM- 4550 will set itself as a DCE when you turn on the power.

For RS-485 wireless transceiver applications, the user can leave the RS-232 port opened. The ADAM-4550 should set RS-232 as a DCE after power is turned on.

2.The pin INIT (pin 6) should be grounded while you turn on the power of ADAM-4550 for config- uration. For normal operation, just leave INIT (pin 6) open while you turn the power on.

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