CV Readback

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Short Definition
Reading back a CV value from a decoder.
Main article: Decoder Programming

Some command stations allow the read back of CV contents. This can be used to check parameters or verify the value was accepted.

CV readback is not possible during Operations Mode Programming[1] and is primarily accessible during Service Mode Programming when a locomotive is on a programming track.

Exception: Digitrax multifunction decoders equipped with transponding when used with a Digitrax system supporting transponding can read back CV values during Operations Mode programming.

  1. Sometimes called "Programming on the Main" or POM.