Try to set SDO's explicitly using Index:SubIndex by using the ecrt_slave_config_sdo8/16/32() family of functions instead of complete access. In fact this the preferred method of setting SDO's.

On 09/11/2014 05:25 PM, Carlos Herkt wrote:
Hello,

referring to
http://lists.etherlab.org/pipermail/etherlab-users/2014/002613.html we
managed to set up our devices properly.
We can communicate with our slaves on both devices (EL6631 && EL66731)!

Now we're trying to initialize the Beckhoff EL6752 the same way we did.
But another error arose:
/
dmesg: "Timeout after 1000 ms while  waiting for SDO 0xf800:0 download
response." /

We doublechecked our configuration and everything seems alright.

What does cause this failure?

Is there a way to change that timeout?

Any help is greatly appreciated.

Best regards




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