Hello,

I would like to read out the parameters of a Sinamics drive with a IOT2050/ Node red.
Does someone has done this before?

I can read them out if I use a 1200 or 1500 plc in between and put the parameters in to a datablock of the PLC, but I would like to read them out without a PLC.
With a PLC I used "Edit S7 IN Node" (see pictures + Flow in attachment).

I don't know what protocol to use when I don't use a PLC in between.

Can somebody help me, all tips and idea's are very welcome.

Kind regards,

Frits van schagen

I don't think node-red-contrib-s7 module implements Read Variables with syntax id "DRIVEESANY", only implements syntax id "S7ANY" see function readVars(items) in s7endpoint.js

Yes, you can use S7 Node to directly read from Sinamics Drive. However, it only support S120 and G120 only. Make sure you have the firmware > 4.7 & above.

Hello,

Thank you for your reaction. Do you have some more information about this? Example project/ flows/ nodes? Did you connect the IOT to the CU320 on port X127 or on the profinet ports?

Apriciate it if you can give me some more information.

Kind regards,

Frits

Besides the native mode of accessing the parameters via DRIVEESANY syntax (STARTER, Startdrive, Drive ES, Simotion Scout), it looks like from FW 4.7 or so Sinamics drives map the parameters to DB blocks see Application example 109481157

Attached I am reading r26 "DC link voltage smoothed" from a G120 Drive using address DB26.DBD0 that in Node red syntax is DB26,R0.

Hi,

Yes i did connect the simatic iot 2050 directly to CU320 ethernet port.

It works!

You may refer to the below link for more information.

https://github.com/plcpeople/nodeS7

Please refer to the "VFD Support" for how to configure the S7 node in node-red.

We're trying to connect from an IOT2050 using Node red to a CU320-2 PN with 2 drive axis. On the S7 node we get connection established but reading the variable will result in error message:

"Error: Error returned from request of Area [132] DB [26] Addr [0] Len [4]: "<Unknown error code 32>""

Any thoughts on what I can be doing wrong? Anything that needs to be activated/disabled on the drive side?

Cheers.