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How to Connect RS-485 wires that have different port labels

Some RS-485 ports are labelled using the two conventions shown below:

  1. A, B, SH
  2. (-), (+), SH

The two label conventions link to each other as below:
A = -
B = +




Original article#12153
Last Revised: October 24, 2007
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All content © 1992-2007 Schneider Electric

Legacy KB System (APS) Data: RESL188648 V1.0, Originally authored by KBAdPM on 10/26/2007, Last Edited by KBAdPM on 10/26/2007
Related ranges: ION8800, ION8600, ION7550/ION7650, ION7300, ION6200, ION8500, ION8400, ION8300, ION7700, ION7500/ION7600
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