elementary bit operation problem KTP400 basic

idell · May 8, 2010

Hi there!
Want to do one elementary operation with KTP400. I have one boolean tag in PLC and want to set it then I push the functional key F1 of KTP400 and reset then I realease the key. In global screen window I programmed Events for F1: Press key: Set Bit [mytag] Release key: Reset Bit [mytag]. After download works only PressKey event and the tag doesn't reset. Who meet this trouble ?

ArikBY · May 8, 2010

I did it few times.
Far as I remember it work fine.So I guess you miss something.
Try also Invert_Bit.It should do a same.

idell · May 8, 2010

ArikBY i know about invert bit, but i need to set the signal only when button is pushed.

ArikBY · May 8, 2010

OK

So use only the SET BIT keep the reset bit empty(do not use it)
In that case the tag will set when you press on the F(x).If I understand well you will reset the tag from the code.

idell · May 8, 2010

i will explain, what want to do. I want to change the screen when i hold F1 more than 3 second. In PLC have one TON timer and match his input with shared tag in KTP.

ArikBY · May 8, 2010

No problem
Set the tag and Reset the tag.By Set&Reset
On your code run a timer when the tag is ON.and when the time is done change screen.When you will release the button the tag should be OFF unless you keep it ON somewhere on your code.Try Also Click it might work.
I would recommend you to change screen by One Shot(depend how you build your logic)

ArikBY · May 8, 2010

I want to take back my words.It would not work with Click.
It Should with Set&Reset

TurpoUrpo · May 8, 2010

There is function "SetBitWhileKeyPressed" just for that what you want.

idell · May 8, 2010

TurpoUrpo & ArikBY SetBitWhileKeyPressed and SetBit ResetBit works well, but only with touch button, cannot do this with functional Button

ArikBY · May 8, 2010

I just went to my one of the oldest project with KTP400 PN.
I used set&Reset with F Keys without any problem.
I have KTP 600 on my table If I will have time today I will try what you say again.
I dont know what will happen if I will hold the key for few sec but as button it definitely work.

Saperov · May 9, 2010

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idell · May 9, 2010

Saperov thanks a lot for the info, i was waiting for long time this SP of WinCC Flex. Now I'm using TIA Step7Basic for programing S7-1200 and KTP panels, and still don't succeed SetResetbit operation with functional keys.

elementary bit operation problem KTP400 basic

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