User Manual

Chapter 5 DataReader Installation and Operating Instructions
- 54 - Hi-G-Tek Ltd. Micro electro nic s & A sset Tra cking Techno logy
5.4 RS-232/RS-485 Adapter
To connect one or more DataReaders that use RS-485 to a controlling
computer you need an RS-232 to RS-485 adapter.
Adapter’s requirements:
 Full/Half duplex operation mode.
 Isolated communication lines.
Recommended adapter: Moxa T echnologies, model A53.
Adapter configuration: (refer to adapter’s User Manual)
1. Communication mode, either half or full duplex – according to the
DataReader configuration.
2. Txd: always enabled.
3. Rxd: always enabled.
Default configuration of the Moxa A53:
 Full Duplex mode
 Txd always enabled.
 Rxd always enabled.
5.4.1 Connecting the RS-232/RS-485 Adapter to the First
Dat a Re ad er
The Rx and Tx lines should be crossed between the adapter and the first
DataReader as follows: