American-fibertek MRX-8485C User Manual download pdf (Page 6)

DATA CONFIGURATION

This link accommodates transmission of:

1) 1 bi-directional RS485 (2 wire or 4 wire) data channel, or

2) 1 bi-directional RS422 data channel, or

3) 1 bi-directional RS232 data channel, or

4) 1 bi-directional RS232 data channel and 1 bi-directional RS422 data channel.

These units are factory shipped configured for RS485 (4 wire) configuration with data

input and output termination resistors in and no offset bias.

There is a rear panel data configuration switch bank which is available to select:

1) RS485 or RS422/RS232 data modes

2) RS485 (2 or 4 wire) format

3) Internal data input/output terminations

4) RS485 Offset Bias Option

RS485 FOUR WIRE SWITCH SETUP

The following is an illustration of the data configuration switches that identifies the specific

switch function and up/down direction for RS485 four wire transmission.

1 2 3 4 5 6 7 8 9 10 11 12

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American-fibertek MRX-8485C User Manual Page 6