12/17/2008 10:23 PM | |
Posts: 12 Rating: (0) |
Hello everybody, I have SINAMICS G120 CONTROL UNIT CU240S connected to PC via RS485. To use the USS protocol with LAbVIEW I had to program it by myself. All seems to work except for one annoying thing. When I request value of some parameter it instead of sending the proper reply it sends reply to previous request. The problem is not in my program since I traced the telegrams and all is send properly. Just the replies are incorrect. When I try to change some P parameter it does it properly but it still sends the improper telegram (with baud rates higher than 19200, up to 9600 it works fine but only when changing the param not when requesting the value). More can be seen in attached example from real "conversation" between PC and the inverter.Mirror telegrams come as expected. I use PKW=4, PZD=8 Have you anybody encountered something like that? Could some parameter be possibly wrong? Or is there something wrong with my implementation of USS? Thanks a lot. AttachmentRequest.pdf (390 Downloads) |
Last edited by: ceties at: 12/17/2008 10:25 PMLast edited by: ceties at: 12/17/2008 10:24 PM |
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1/23/2009 2:27 PM | |
Posts: 12 Rating: (0) |
If you can wait one week I will upload my implementation also with documentation here: Cheers |
Last edited by: ceties at: 1/23/2009 2:28 PM |
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1/24/2009 12:34 AM | |
Posts: 2 Rating: (0) |
That will be very helpful for me, thanks a lot again! :-) |
Last edited by: marekleh at: 1/24/2009 12:35 AM |
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