adccommunitymod (AutomationDirect) asked a question.
KepDirect - Sending Multiple Memmory locations
Created Date: May 08,2007
Created By: Krebbet
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Hey! I was wondering if their is a way through KepDirect to send over a large amount of successive memory locaions (lets say v2000-v2017) without inputing each tag individually. I have a program where a bunch of data is saved into memory locations in a plc and I want to load them up as an array, without having to create hundreds of tags. Thanks!
Created Date: May 08,2007
Created by: chris.zeman
Heck, I'd like to see a decent example of how to retrieve information from an OPC server with VB.NET or C#.
DDE is so easy, but Microsoft eliminated the control properties needed for DDE with the release of .NET (unless I'm missing something). I also read somewhere that while there is OPC functionality included in .NET, MS didn't include everything to really make it work easily.
I noticed, too, that DSData's description says that it isn't recommended for new development. I'm just curious as to why, since it supports DDE and OPC. I'd much rather spend $315, rather than the $795 I'd have to spend on Kepware.
Maybe I'm just a little grouchy, but this is the battle I 've been fighting for a few days. lol
Chris
Created Date: May 09,2007
Created by: allukes
I guess it doesn't fit into their Client/Server model.
This is from the the Microsoft website.
Network DDE is no longer supported. Nddeapi.dll is present on Windows Vista, but all function calls return NDDE_NOT_IMPLEMENTED.
They are forcing you to use OPC.
Created Date: May 09,2007
Created by: GKiser
Originally posted by chris.zeman:
Heck, I'd like to see a decent example of how to retrieve information from an OPC server with VB.NET or C#.
Chris, I don't know of an example, but the pieces needed to do this are shown in our DSData FAQ0063. I don't know if that will help or not. http://forum1.automationdirect.com/board/confused.gif
...I noticed, too, that DSData's description says that it isn't recommended for new development. I'm just curious as to why, since it supports DDE and OPC. I'd much rather spend $315, rather than the $795 I'd have to spend on Kepware...
I believe it is just simply because we have stopped development on DSData (it is just a bit dated) though it works just fine.
Greg Kiser
Host Engineering, Inc.
http://forum.hosteng.com
support@hosteng.com
Created Date: May 08,2007
Created by: Krebbet
Hey!
I was wondering if their is a way through KepDirect to send over a large amount of successive memory locaions (lets say v2000-v2017) without inputing each tag individually.
I have a program where a bunch of data is saved into memory locations in a plc and I want to load them up as an array, without having to create hundreds of tags.
Thanks!