Hello,

I have a G120P connect with PLC S7-300 via PROFIBUS.

Now I use standard telegram 1 PZD 1/1 for communication between PLC and inverter.

I need to enlarge telegram for read parameter r755 in PLC. I suppose to use telegram Siemens 350 PZD4/4 ,  but I need to change data in this telegram.

I have to read parameter NIST_A instead NIST_A_GLATT and r755 instead IAIST_GLATT.

How can I do?

Thanks

NOTE: I can't use free telegram

Hi,

I recommend to use any standard telegram you want. For example 352, because here you already have a ready to use FB in TIA Portal (see library LSINAExt):

https://support.industry.siemens.com/cs/ww/en/view/109747655

Or telegram 1 with SINA_SPEED FB.

Then add supplementary data to your telegram. See my attached screenshot. The good thing is that those slots have their own HW ID (marked in the screen). You can access them by GETIO and SETIO system commands.

Thanks for replay,

I have forgotten to say that I work with Simatic Manger and Step 7 v5.5 SP4.

I remember SINASPEED library is not compatible