[etherlab-users] usage questions

Florian Pose fp at igh-essen.com
Fri Aug 31 17:52:21 CEST 2007


Hi,

On Fri, Aug 31, 2007 at 04:41:39PM +0200, Stéphane ANCELOT wrote:
> It looks like a database is defined in the software regarding ethercat
> modules.

you mean the ecdb.h? This is a just convenience header for slaves's
vendor IDs and product codes...

> How would it be possible to  add another kind of module eg. EL6751 ?

If the slave has fixed PDO's, you can extract the PDO information from
the slave's EEPROM. If it has variable-size PDO's (like in this case)
you'll have to know the PDO sizes. Then you can register a PDO range
(ecrt_domain_register_pdo_range()) and exchange the complete process
data.

Although we have no experiences with Beckhoff's CANopen slaves, we have
a BK1120 KBUS coupler running.

Regards,
Florian



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