valerianlin

OMRON Input Pulse to SET Instruction

3 posts in this topic

Hi all,

I am fairly new to PLC programming, and just have a simple program regarding an unlatching input. In the picture below, I have STARTCOIL going to the set instruction for a single acting cylinder, LOCATOR_F. My problem is that once the STARTCOIL is actuated, it stays on, and I cannnot use the RSET instruction on LOCATOR_F.

How would I modify the program to make the STARTCOIL pulse once to set the  SET bit, but after that, there is no powerflow through STARTCOIL. In short, I'd like to stimulate a non-latching push button.

I would appreciate any help.

Thank You

Capture.JPG

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Not sure I understand what you want, but I think you want an output coil instead of the SET instruction.

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You did not indicate what plc you are using.

You may be able to set the contact Differentiation in the Edit Contact dialog, see below.

Differentiation Up will turn on the contact for one scan when the associated bit initially turns on.

Hope this will help.

 

 

MRPLC_20170414.jpg

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