Hi! We have a similar problem to this one:
http://lists.etherlab.org/pipermail/etherlab-users/2009/000509.html In that case, I'm waiting for the proposed new hardware replacing the EL6001, which should be released this month by Beckhoff and I hope it will be gone with them. But with our own device, there's the idea of setting the IP-Adress for EoE with SDO-Data. Playing with that, we've found that upload of SDO description does fail, if the realtime module (PREOP->OP) is loaded too early. But the upload works, if there's a delay of about 3 seconds. If it fails, the log shows the following: ecmaster [94800.581671] EtherCAT ERROR: Reception of CoE SDO description response failed on slave 0: No response. ecmaster [94803.614373] EtherCAT ERROR: Timeout while waiting for SDO entry description response on slave 1. >ethercat -p0 sdos Sdo 0x1c12, "" Failed to get Sdo entry: Invalid argument >ethercat -p1 sdos Sdo 0x1c12, "RxPDO assign" Failed to get Sdo entry: Invalid argument I've attached two wireshark protocols, filtered for ethercat_mailbox. One on which the timeout occoures and one where it has been OK, because of waiting. In the protocol files there's this 3 seconds delay visible. Why does the master wait for 3 seconds before it goes on further? Thanks, Erwin -- Erwin Burgstaller
sdo_problem_cap.tgz
Description: GNU Unix tar archive
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