What is the pinout for RS485/RS422 connections to a UDS10, UDS100 or UDS1100?

The correct pinout for an RS485/RS422 (4 wire) connection to a UDS10, UDS100, or UDS1100 is:

7 Ground
14 TX+
15 TX-
21 RX+
22 RX-

Note that the pinout given on page C-1 of one version of the UDS10 Installation Guide (P/N 900-207, Rev. A) is incorrect, the above pinout is correct.

UDS10 and UDS100 RS485 (2-wire) connection is:

7 Ground
14 TX+
15 TX-
21 RX+
22 RX-

Jumping 14 to 21 and 15 to 22.

On the UDS1100 - The unit has internal jumpers so for a RS-485 (2-wire) connect you only need:

7 Ground

14 for +

15 for -

**Note: you can also purchase for the UDS1100 the 500-171-R adapter for screw down connections.

See Adapter

[Originally Published On: 08/16/2000 03:40 PM]