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Rockwell Automation Publication 442G-UM001B-EN-P - May 2016
Preface
Terminology
OSSD
Output Signal Switching Device. Typically designates a pair of solid-state signals pulled
up to the DC source supply. The signals are tested for short circuits to the DC power
supply, short circuits to the DC common, and short circuits between the two signals.
Standard coding
Same as Low coding as defined in EN/ISO 14119:2013
Unique coding
Same as High coding as defined in EN/ISO 14119:2013