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<== Date ==> <== Thread ==>

Subject: DLS EtherCAT scanner and unmatched datagrams [SEC=UNCLASSIFIED]
From: "LYNCH, Damien" <[email protected]>
To: "[email protected]" <[email protected]>
Date: Tue, 21 Jan 2014 22:36:19 +0000
Hi,

Have any DLS EtherCAT module users noticed messages like the following in their log?

Dec 16 15:31:57 (none) kernel: [17651.934011] EtherCAT WARNING 0: 2000 datagrams UNMATCHED!
Dec 16 15:31:58 (none) kernel: [17652.934010] EtherCAT WARNING 0: 2000 datagrams UNMATCHED!
Dec 16 15:31:59 (none) kernel: [17653.934010] EtherCAT WARNING 0: 2000 datagrams UNMATCHED!

This was only happening when the scanner was running. I was seeing these messages on my test system which is set up as:
- Linux 3.4.69-rt85 
- EtherLab Master 1.5.2
- EtherLab ec_e1000e driver 
- DLS ethercat-1-5-3
- EK1100, EL3052, EL4024, EL3104

IO was still working on my simple test system (which comprises of one connection from the Beckhoff EL4024 to the EL3052). I found a thread on the EtherLab mailing list (http://lists.etherlab.org/pipermail/etherlab-dev/2013/000334.html ) which talked about the order of calling some of the EtherLab application interface functions (http://lists.etherlab.org/pipermail/etherlab-dev/2013/000342.html). After following these instructions and making changes to cyclic_task() in scanner.c the log messages stopped. My test system seems to be running fine after this change (which admittedly I did only yesterday).

Thanks,
Damien


Replies:
Re: DLS EtherCAT scanner and unmatched datagrams [SEC=UNCLASSIFIED] Jon Nielsen

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