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ymcorp
Jul 14th, 2008, 08:00 AM
Hello everyone, I am still somewhat new to VB 2008 trying to get all the basics down. I want to start a project that will require a little more time and work. I've been searching around a little bit looking at some third party applications to write to and read a PLC (programable logics controller). Someone had recomeneded using SCADA which includes an HMI, but i believe that is somewhat expensive. I'm also dont want an application that requires the purchase of speacial drivers, which we know can be expensive and troublesome. I dont need anything incredibly fast either, i dont think i would be drawing or writing to the plc more than once every 5 or 10 seconds, but that is a rough estimate at this time. If you have any experience with anything like this some suggestions or ideas are very much appreciated. Thankyou in advanced for your feedback.

dbasnett
Jul 14th, 2008, 08:21 AM
serial?

ymcorp
Jul 14th, 2008, 08:48 AM
I will be using ethernet. There will probably be anywhere from 1-5 plc's that will be on a standalone network using a hub or some kind of switch. Hope that helps :)

arj3090
Aug 15th, 2008, 06:13 PM
What make and model PLC are you want to communicate with?

InertiaM
Aug 16th, 2008, 02:30 AM
I'd choose a Beckhoff BC9000 PLC. I've built libraries for doing most functions via Ethernet. Let me know if you need any help with this :)

gvr1979
Feb 2nd, 2009, 07:28 AM
Hello, can you send me your libraries? in what language is it?