Axis in parallel to external MDI comands --> Goal TCP/IP commands

Hello CNC folks,

I am new to the topic of linuxcnc and I have a few questions to the pros of you. My goal is to get the complete control of my milling machine with an external computer over TCP IP commands. To achive this a startet a simple python programm by using the linuxcnc library. It was no problem form me to read out all the information from the machine, except setting something with the mdi methode.
I googled a lot and tryed out several approaches to execute a simple command, but without any succes. Here is what i did:

• I started the axis gui and init the machne. I run a python script to execute mdi commands --> no success
- made all suggested checkings (no estop & enabled & homed and (s.interp_state == linuxcnc.INTERP_IDLE)
- Mode was read as MDI
- mdi command seems do be send, but not been executed
- my script had write and execution permission --> no success
- Q: does the axis gui block external mdi commands such as a python programm or MDI?(in bash)?
- I have the feeling something is blocking my commands

• I tryed out the same python script, without axis --> no success, becaus I was not able tho change the Mode
• Do i have to configre something to allow the external access to the machine?
- I read about an channel somewhere deep in the configuration to allow the access from python, is that true?
- If yes, may somemone help me out, where to do the config and how?

• Is there a better way to send tcp/ip command to the axis gui, by writing my own little broker server and parsing in commands and using the mdi methode?

I appreciate any advice from you Folks,

Best regards,
Chris

Hi you can use Either MESA Stuff like 7i92 or 7i80 7i76e/D
or a ethercat

you can provide standard TCP to the Hal module

HAL needs to be in as it is realtime

you coudt also use limit3 as a driver for the mashine and a python component to translate the TCP
BUT this is not a real mashine setup and the e-stop might break your mashine bevor you get notice

i used the lib "linuxcnc" with python so far.
But linuxcncrsh seems good. I will give this a try and let you know my progress. Thanks for the hint.