[etherlab-users] problems with Beckhoff EL3702 terminal

Matthias Dagen dagen at ifr.uni-hannover.de
Fri Feb 8 16:26:26 CET 2008


I have a problem with the EL3702 bus terminal from Beckhoff.

According to the out put of lsec, I added the PDOs of the terminal to 
the ecdb.h file and adjusted the s-function and tlc-file to embed the 
terminal into Simulink.
Everything seems ok: I can insmod the module and the master is able to 
register the PDOs of the terminal. But I don't get the right data, I 
always recieve zeros.
The strange is, if I use the ethercatcfg tool by Beckhoff to test the 
terminal and after this use my own module, I'll get the right data and 
the terminals are working correctly. This behaviour is reproducible. So, 
in my opinion the s-functions/tlc-file and the PDOs should be ok.
I think, I've forgotten to configure the terminal in the right way or I 
have to send something to the terminal before using it (sync signal?). 
But I don't know how to do that.  Has anybody a solution for this 
problem or experiences with this terminal?

Best regards

    Dipl.-Ing. Matthias Dagen

    Leibniz Universität Hannover
    Mechatronik-Zentrum Hannover
    Institut für Robotik
    Appelstr. 11a
    D-30167 Hannover  /  Germany

    Tel.:  ++49-511-762-17836
    Fax : ++49-511-762-19976
    E-mail: dagen at mzh.uni-hannover.de
            dagen at ifr.uni-hannover.de

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