industrial

I recently have acquired an ACS Linear Actuator (Tolomatic Stepper) that I am attempting to send data to from a Python application. The device itself communicates using Ethernet/IP protocol. I have installed the library cpppo via pip. When I issue a command in an attempt to read status of the device, I get None back. Examining the communication with Wireshark, I see that it appears like it is proceeding correctly however I notice a response from the device indicating: Service not supported. Example of the code I am using to test reading an "Input Assembly": from cpppo.server.enip import client

Has anyone successfully talked profibus from a .NET application? If you did, what device/card did you use to accomplish this, what was the application, and did you use any kind of preexisting or available code? We've not used Profibus, but have used DeviceNET (another CAN based protocol), Ethernet/IP and ControlNet which all have similar challenges. We've been doing this since the late 1990's and therefore rely mainly on our own generated code using off-the-shelf hardware. The companies that have shown longevity during that period that I remember are:- AnyBus (HMS, www.anybus.com ) we've