Hello everybody,

I'm new in Bacnet protocol and I'm using the HD67719-IP-A1 profinet-Bacnet converter from ADFWeb, and I configure the data collection. In the gateway I, for example, configure the access of an AI in the instance 20400 and "put it" in 4bytes. I can see this 4 bytes directly in a watch table in peripheral inputs (step 7 v15.1), but the values are not what I expect to see. They are totally different. My question is, do I need to make a conversion of the values that I extract from Bacnet?

Best Regards,

NP

Duris_I

Hello,

first quick idea is maybe WORD/BYTE swap of your buffer, here I recommend only test change them to have maybe correct values then.

 Hello Duris,

Its correct. Meanwhile I swap the words and it works. Thank you for the help.

Hello dear,

   Am facing same problem in my project. Can u tell me how to swap word/byte

Hello muhammed;

Step 7 v15.1 has 2 similar instructions SWAP, that change the order of bytes inside a word or dword. One instance is for S7-300/400 CPUs, the other is for S7-1200/1500 PLCs.

https://support.industry.siemens.com/cs/ww/en/view/109755202/96916951563

Hope this helps,

Daniel Chartier 

Hello,

As I said to you please check in your ADF configuration software if you have the column I marked in the photo attached.