Hey thekaiser80s,

we've not tested this on our side but based on the posts from the other users it is possible to communicate directly with SINAMICS S120 and G120 drives (from FW 4.7). Connect the IOT2050 directly to the Ethernet Port of the drive.

Newer SINAMICS drives (from FW 4.7) map parameters to DB blocks. For example, parameter r26 "DC link voltage smoothed" can be read via address DB26.DBD0. In Node-RED syntax, this would be DB26,R0 or DB26.DBD0.

Use the node-red-contrib-S7 node for the communication and pay attention to the correct addressing of variables e.g. DB26.DBD0 for 32-bit numbers or DB26.DBW0 for 16-bit numbers.

For detailed information on VFD support, you can consult the documentation on GitHub.

If you encounter connection issues, check the network settings and whether special activations are required on the drive side.

BR