CODESYS - the IEC 61131-3 automation software

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PostPosted: Tue Sep 10, 2019 8:39 am 
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Joined: Sun Jul 23, 2017 1:10 pm
Posts: 2
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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