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Are terminating resistors required on my RS-485 network?

Article Number: 59 | Rating: 5/5 from 1 votes | Last Updated: Fri, Jan 18, 2008 at 12:00 AM

Not generally, and most of the time they generate more problems on the network. Our recommendation is to setup your RS-485 network without terminating resistors initially. If communication problems are seen which can be attributed to signal echoes or reflections, then a 120 OHM terminating resistor may be required on the RS-485 line.

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