Python in Process Control?

Ville Vainio ville at spammers.com
Fri Oct 1 15:31:42 CEST 2004


>>>>> "Wolfgang" == Wolfgang Keller <wolfgang.keller.nospam at gmx.de> writes:

    >> OPC is just DCOM,

    Wolfgang> Well, if it is sooo easy, why has noone done a freeware
    Wolfgang> twisted OPC module yet...? >;->

I didn't say it is easy, it just shouldn't be harder than, say, doing
it in C++ (even if you will find more example programs in C++).

    Wolfgang> To start with I "just" need to "emulate" an OPC server
    Wolfgang> to play around a little bit with a SCADA package, so
    Wolfgang> everything more than importing a module and
    Wolfgang> instantiating an OPC server class with a few lines is a
    Wolfgang> little bit over my head...

Well, I can say it's definitely not going to be that easy. You, too
will soon learn to apprecate how much OPC sucks ;-). I did implement
an OPC client library in my previous job (after which OPC was actually
quite usable), but it's proprietary.

    Wolfgang> (Could it be that I'm a little bit pampered by the vast
    Wolfgang> Python module collection available for other domains
    Wolfgang> than industrial automation...? >:->)

Probably. Industrial automation is not necessarily "interesting" if
you are not working there. Open industrial automation infrastructure
would be an extremely interesting avenue for academic research and
subsequent lucrative consulting, though...

-- 
Ville Vainio   http://tinyurl.com/2prnb



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