M-bus trouble with variable set up

[JustynaS]

Hi, 

I try to connect device with m-bus protocol. I have virtual com port on zenon server. Now, i dont know what i should put in offset in variable setup. 

I got the connection with device with some m-bus software. I got the frame from the device and it looks like that:

.

I should count the place number from the first sign of all frames or starting from the first sign of data frame(begining from OC 78 signs)? 
I tried a lot of combination and i failed. 

Help!  

[ursulak]

Have you configured the right baud rate (as well in software controlling the virtual COM-port as in MBUS driver)? Have you configured by variables the Net Address = 1 (compare "A=01" on the screenshot)?
Do the variables have correct driver object type (PLC marker) and data type (INT2 -> INT, INT4 -> DINT).

What are the symptoms in zenon? Are variables INVALID, or empty, or have strange values? Do you see in LOG (DiagViewer) errors or warnings?

[ursulak]

and.. have you read in Help the topic till the end: Service Engine drivers\MBus32\Creating variables\Driver objects and datatypes\Driver objects

[JustynaS]

Yes, 

I did every thing you said. Com settings was good. The slave id was good. I read everything in documentation several times. In diagviewer there was nothing about the com i used. 


I don know where the problem was. I added virtual com port one more time with the same config and now it's working. I think the com port wasnt be opened correctly. 

Thank you very much for the reply!  

[ursulak]

I neither have experience with M-Bus, nor time to read the protocol papers, but from what i've read in zenon help for the driver and see on your picture i would propose you to create variables 8 (or 11) LREAL or DINT variables (up to you, i suppose the driver converts received content to the data type of variable) with offsets like numerated (in magenta) on the screenshot: 

[ursulak]

oh, nice, we synchronized the responses .
Did i guess the addressing right?

[JustynaS]

Yes, that is the right addresing
Thanks a lot one more time.