Dry contact connection issue

2016-07-31View Original

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How to determine whether a normally open dry contact is in a connected state or a disconnected state! Can PLC or DCS systems identify it automatically? Is it still ensured through hardware?

Reply #22016-07-31

This post was last edited by jlszhoujidai on 2016-7-31 10:19. This is the most basic form; it can be recognized easily....

Reply #32016-07-31

Can you find out by using a multimeter?

Reply #42016-07-31

There are so many in the whole factory! How is it possible to measure everything! I mean, does the system have an automatic detection at that time?

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Dry contact connection issue

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