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Rockwell Automation Publication 440G-UM001A-EN-P — November 2013
Preface
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Terminology
OSSD
Output Signal Switching Device. Typically designates a pair of solid state
signals pulled up to the DC source supply. The signals are usually 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