CODESYS - the IEC 61131-3 automation software

Auto starting on power up
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Author:  ilunn [ Tue Sep 10, 2019 8:39 am ]
Post subject:  Auto starting on power up

Hi all I have wrote a program for IFM CR0401 (codesys 2.3) but have issue on start up, the program causes a pneumatic cylinder to extend and retract on the rising trigger of input (via a guard switch) as the guard switch is closed on power up the program sees it and the cylinder does 1 random movement. on PLC,s that I've used there is a internal register that is flagged upon power up/run but I cannot find anything like it in codesys, any one got any ideas how I can block the input on power up.

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