calling NI cFP hardware from other languanges

[John Lokanis]

I use an Ethernet attached cFP system to control some power relays in my test system. I read and write the bits on a DO card using datasocket and the LOGOS protocol. Another engineer wants to reuse our hardware setup but instead control the cFP hardware from another non-NI language (in this case, Python). Does anyone know if this is possible? If so, is there some info on the web explaining how to make this work. My google searches keep coming up with links to the Monty Python Logo. Funny, but not very helpful…

-John

[PaulG.]

My google searches keep coming up with links to the Monty Python Logo. Funny, but not very helpful…

Python -Monty

[Yair]

I sent a reply to Info LV, but I might as well replicate it here - my basic suggestion was to either use Modbus or to use the DLL function CVI uses to work with DSTP or with the FieldPoint protocol directly.

[John Lokanis]

Thanks for the DLL idea. That might work if I can find docs on the DLL interface. The Modbus idea is also good but would not work in my situation due to the need to communicate with the cFP hardware over Ethernet.

[Yair]

Modbus has a TCP/IP version, which is basically the same as the serial version. I assume cFP supports it, but I never used Modbus with FP, so that's just a guess.

[sofo2]

John,

 

Did you have any luck with this issue?  I am trying to do something similar now.