Has anyone connected a Freelance 800F to Atlas Copco air compressor MarkV profibus gateway?use

We are attempting to connect a Freelance system to a MarkV profibus gateway. Any assistance with this will be helpful.

By DIGIMATIK on 5/2/2018 | Like (0) | Report

Hi, we had a negative experience with MarkV profibus gateway communication.
We got the next information about this communikation from Atlas Copco. "In other installations our customer the communication based on 1DR.
1DR is 1 analog input sent from master to slave…byte 0 = header, byte 1 = CAN address, byte 2 and 3 = what data point you want to read, byte 4,5,6,7 =0
Answer from slave byte 0 = header, byte 1 = CAN address, byte 2 and 3 = what data point you asked for, byte 4 and 5 the value, byte 6 and 7 the status.
Every 50 ms a new request will be sent with 1DR and a new data point.
So you can get every information from compressor or dryer but one after the other."
It is not correct PROFIBUS communication. It is very slow. Finally we used MODBUS communication.
B.R.


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ctempleton   

asked 22 days ago
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tr10091969   

answered 20 days ago


 


By DIGIMATIK on 5/4/2018 | Like (0) | Report

Hi, I have one question. How long is the cycle time?


By ctempleton on 5/4/2018 | Like (0) | Report

Thank you very much. The input output was really what I was struggling with. This now is a lot more clear. I appreciate your assistance.


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Answers

0

Yes I did

It is no standard profibus protocol.

Yup have okay One Data Input and you have to write a routin

die each Data Point Yup wann zu have.

So teh Data exchange could take a while.

Read the Handbook of the Gateway, it helps.

tr10091969   

answered 20 days ago


 


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0

How do you go about doing this? The GSD file used has input and outputs that you can drop and define IO, but if you have to write code to interrogate each address and individually, not really clear on how this would be done.

ctempleton   

answered 20 days ago


 


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0

I wrote the routine in structure text.

I can give Yup hints for the realisation but

not the fixed solution. This is your

Job.

tr10091969   

answered 20 days ago


 


Add New Comment


1

tr10091969   

answered 20 days ago


 


By DIGIMATIK on 5/4/2018 | Like (0) | Report

Hi, I have one question. How long is the cycle time?


By ctempleton on 5/4/2018 | Like (0) | Report

Thank you very much. The input output was really what I was struggling with. This now is a lot more clear. I appreciate your assistance.


Add New Comment



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