User's Manual
Table Of Contents
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DataReader Installation
3
Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology
42
3.4. RS-232/RS-485 Adapter
Adapter's requirements:
- Full/Half duplex operation mode
- Isolated communication lines
Recommended adapter: Moxa Technologies, model A51
Adapter configuration: (refer to adapter's User Manual)
Default configuration of the Moxa A51:
1.
2.
3.
Communication mode (either half or full duplex)
Txd: always enable
Rxd: always enable
- Full Duplex mode
- Txd always enable
- Rxd always enable
3.4.1. Connecting the RS-232/RS-485 Adapter to the First Reader
The Rx and Tx lines should be crossed between the adapter and
the first reader as follows:
Reader
RXA
RXB
TXA
TXB
SIG-GND
Reader
TXA
TXB
RXA
RXB
SIG-GND