Siemens Logo8 communication (0BA8)

Hello, this forum has helped me a lot before, but now, I have to ask for your help.

I have a problem with siemens Logo8 (0BA8) communication. I use for communication vi-s https://decibel.ni.com/content/docs/DOC-5467. I want to read and write to meters (see photo below) for example B035 K where the NTC is 5. I don't know how to read or write to these data. I guess that I do not process correctly. On s7-1200 successfully read/write to DB - s (choose DB and start address and that it is) but on the logo, I can connect but not read and write. Someone did it successfully and is ready to share that? I would be very grateful.

Thank you for your time!

Hello

shalumdawg thanks for your help and sorry for the late reply. I know that I can connect because it reads something and answers, but not what I wanted and last week I found the solution.

SoftComfort v8 Logo, you must map the addresses (software development for Siemens Logo8). You do this by going to Tools --> setting VM mapping... and there you set the addresses for what you want to read.

Mine looks like this:

In labview, you assign to database DB1 and use for example mapped addresses if you want to read meter B035 in labview, you can set playbackfunction, Transport to DWORDsize, replaced by 1length, data block # 1, add the surface of DB and the start address to 35.

You can read all seven addresses at once using the same settings but playing selected to address 7 time and start the first address whitch you want to read (in this case 35) and you will get a table with all 7 parameters.

   

Writing is performed by shanging function to write.

Tags: NI Software

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