Francisco Morales

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6 years ago.

Stepper motor control using SCPI commands thought ethernet howto?

Hi,

I would like to start a 2 axis stepper motor control using SCPI commands thought tcp/ip ethernet interface project.

I have the STM 32F746G discovery supported board with the X-NUCLEO-IHM02A1 also supported motor expansion board.

https://os.mbed.com/platforms/ST-Discovery-F746NG/

I have created a project for my platform and I have included the "hello world" module for the "X-NUCLEO-IHM02A1" but I am a bit lost with the SCPI control thought Ethernet.

Could somebody share and example or project to manage SCPI commands using the Ethernet interface?

Any help would be appreciated.

Thanks

Francisco

1 Answer

David Thedens
6 years ago.

I googled a bit, but I did not see any existing art to leverage from. break the project into pieces. https://os.mbed.com/search/repository?q=stepper+motor plenty of info on stepper motors. plenty of info on Ethernet.

define the grammar that you want to use for your SCPI control. As far as I know, here is no grammar to leverage from. for instance:

STEPper:ONE:POSition 2000 STEPper:TWO:RPOstion 100

move to absolute position and move relative position. Add more grammar as needed.

then build a parser to extract the operations from the commands and code functions to perform the operations.

Thanks David,

yes, you are right, there are a lot of information regarding to the motor control and the ethernet control, maybe there are no much information about SCPI regarding of how implement VISA/GPBI, that it is the way I would like to connect with the board.

posted by Francisco Morales 14 Dec 2018