[etherlab-users] problem in using new BeckHoff encoder EL5101

Jason Xu jason at motiondesign.co.nz
Wed Jul 29 07:05:58 CEST 2009


 Hi Florian:


> BTW, you should probably be able to configure the slave with the 'old'
> > PDO configuration from the former slave versions. The master will
> > complain, because the PDO configuration will fail, but the process data
> > should be exchanged. Have a try.


It works when I use function "ecrt_master_slave_config()" and
"ecrt_slave_config_pdos()" to overwrite the PDO with the old configuration
data. I misunderstand what you said before.

The master is standard release version. It does complain about "slave does
not support changing the pdo mapping!", but it reads encoder fine like you
said.

Now, we will stay with the standard released master, so please ignore our
previous modified master code in etherlab-users Digest, Vol 26, Issue 17,
even that modification works around with this problem.

BTW, when using TwinCat to read the PDOs from these troubled EL5101 modules,
the PDO data are wrong when using on-line data.


Thanks again for your help.

Jason Xu
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