hi there,
I'm looking for a little or no cost way of making a xp based hmi and scada system, I have a T100MD using rs232 port and a usb/serial adapter than doesn't support any operating system above xp.
t100md supports modbus/RTU. i did muck out with the visual basic advanced hmi for Allen Bradly as seen on you tube
http://www.youtube.com/watch?v=CiPzqc5jDlE . i tried to find a RTU driver to use instead of the ab df1 drive with no success. lots of software out there ranging from expensive to a second morage on a house. with no idea how well it would all work anyway. i just want to find something good to learn on and maybe be ideal for budget small projects. any suggestions would be appreciated. thanks