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Old January 11th, 2018, 01:46 PM   #4
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janner_10 is offline
Join Date: Dec 2014
Location: Tewkesbury
Posts: 510
Depends what the control voltage is returning on S2, if its 0v to 10v then you can simply substitute this with a PLC analogue output.

Measure across S1 and S3 and see if it's 10v.
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