Communication between Gateway Jython Script and External Python Script


I understand scripting in ignition is based on Jython and therefore such library like SciPy, NumPy and Pandas cannot be imported.

As a workaround, is there a way to perform the following from a Jython ‘Web Dev’ script :

  1. Run an external python script (located on the gateway host machine filesystem).
  2. Considering this script process some calculatory functions based on Scipy/ Pandas / NumPy, it then return back its output (let’s say a float) into a variable of the ignition gateway Jython script.

Any idea if this can be worked out ?


Yes, you can use java or jython subprocess functions to run the external script, controlling its standard input and capturing its standard output.


It is possible to integrate with ignition server and python application on ignition server or other server thru sockets . We do have a module for that. Webdev allows communication thru a browser and server . What data do you want to exchange between the two applications and at what interval ? It all depends upon that .

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