[etherlab-users] ep2338

Dusty Clark dclark at mmto.org
Thu Jun 5 02:52:35 CEST 2014

What Gavin said is true. Start with building/installing the master, and
have a look at the examples. Attached is a little C application that does
what you want with several slaves using stdin/stdout; it wasn't written by
me but a co-worker.

Connect it up to a Linux pipe and voila! you'll have a way to use another
language of your choice (we use Java and Python) to talk to the ethercat

Good luck!

On Wed, Jun 4, 2014 at 5:43 PM, Gavin Lambert <gavinl at compacsort.com> wrote:

> On 5 June 2014, quoth Javier:
> > I am a beginer and want start turning on a led in the EP2338 box from
> > ethercat master command line.
> Typically you cannot do that sort of thing from the command line, as
> without
> an application the devices will remain in PREOP state, and outputs are
> normally not allowed to activate until the device is in OP state.  (And
> even
> if you use the command to explicitly request OP state, devices with outputs
> will typically not remain in OP unless they're being updated cyclically by
> an application.)
> You will need to write an actual application in order to bring devices to
> OP
> and keep them there.  See the examples included with the library.
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