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Reading IO IndraDrive in PLC programming

AndroidzZ
Established Member

Reading IO IndraDrive in PLC programming

I am trying to read out the IO of my indradrive and use the values in my PLC program. With a virtual axis I can do this without any problem I can call the data from the datalayer into my PLC program.  As soon as I try it with the IO coming from the IndraDrive into the datalayer, nothing happens. in the datalayer itself I get the actual values of the IO back so the communication is working, am i missing something? 

The images should clarify what I am doing. Maybe it's something with the blue message "string constant" but i cant seem to find a problem there. Backslash infront of 'fieldbus' doesnt change anything.

DataLayer_Value: INT;

4 REPLIES 4
AndroidzZ
Established Member

Re: Reading IO IndraDrive in PLC programming

forgot extra image

CodeShepherd
Community Moderator

Re: Reading IO IndraDrive in PLC programming

The first thing I see is that your paths are different. The real data has a starting "/" and the virtual not.

What is the error message that your function block is showing?

For your real time data you can of course also use the Codesys standard ways:

2021-03-11_09h27_22.png

2021-03-11_09h27_34.png

AndroidzZ
Established Member

Re: Reading IO IndraDrive in PLC programming

Thanks for the reply i got what i needed with the codsys standard ways! 

But ReadNode should work too, right? 

As said in my first post the "/" doesn't change a thing and the function block has no error message the output value of readnode is just 0. While the value in the datalayer is not 0.

CodeShepherd
Community Moderator

Re: Reading IO IndraDrive in PLC programming

Sorry I kind of over read this. In my opinion it should work. I will do some tests. Thanks for mentioning.

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