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Dry Contact Input?

10/2/2014 4:11 PM	Rate (0)
iMalinko Experienced Member Joined: 7/29/2014 Last visit: 12/23/2025 Posts: 82 Rating: (0)	I have two wires that are normally open and when the pressure goes higher than my desired value, then it closes. Do I just wire the two wires into an input (if so, which?) and then tell my ladder logic if it closes, then do whatever action I need?

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10/2/2014 5:35 PM	Rate (0)
eisenpferdreiter Posts: 1058 Rating: (93)	SagarDPatel I have two wires that are normally open and when the pressure goes higher than my desired value, then it closes. Do I just wire the two wires into an input (if so, which?) and then tell my ladder logic if it closes, then do whatever action I need? Hello SagarDPatel, wires are not switches and connect one point to another. So I guess you mean something like a relais.You can of course wire a relais contact to a digital input. When contact closes, you will get a logical "1" and that could trigger any action you would need. regards
eisenpferdreiter Posts: 1058 Rating: (93)
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10/2/2014 7:46 PM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, In case you have a 200 plc the wiring is in the attached pdf. If you have other PLC please mention the partnumber(s) Regards, Marcjan Attachment s7200_wiring.pdf (504 Downloads)
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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