[etherlab-users] Exposing variables from Beckhoff Embedded PC [SEC=UNCLASSIFIED]

[LYNCH, Damien]

Hi Ronaldo,

The variables are part of a PLC program we have written (in TwinCAT 2). One of the terminals connected to the embedded PC is a serial interface which is connected to a 6-sensor pressure gauge. The PLC program does some interlocking on these pressures but we would also like to expose these pressure readings to our EtherLab master for archiving.

Thanks,
Damien

-----Original Message-----
From: ronaldo.mercado at diamond.ac.uk [mailto:ronaldo.mercado at diamond.ac.uk] 
Sent: Friday, 13 June 2014 7:35 PM
To: LYNCH, Damien; etherlab-users at etherlab.org
Subject: RE: [etherlab-users] Exposing variables from Beckhoff Embedded PC [SEC=UNCLASSIFIED]

Hi Damien,

> However I have to manually add the variable names to the outputs of "ethercat xml"

What are the "variable names" that you refer to? Are they generated by TwinCAT? 
Could your process be done offline?

The information in the SII is typically a subset of the manufacturer description files, that you could parse to recreate what "ethercat xml" and "ethercat cstruct" generate.

There's two example python scripts in this download from our site.

http://controls.diamond.ac.uk/downloads/other/files/ethercat-etc.tar.gz


Regards,

Ronaldo

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