I am writing a Windows NT service to provide data from a software data historian package to a Modbus Master. As I know there are several third-party options available, I would prefer to not have to write the Modbus Slave portion of the program . I am looking for feedback on personal experiences with such products. Thanks for the help in advance.

 

Look at: http://www.softwaretoolbox.com/
For instance: "In-Gear32 OCX Modbus Standar" is a good choice also others in this site.

Greetings from Mexico
David Diaz

 

Check out:

http://www.vhmiautomation.com/PLCCD.html
for low cost PLC drivers for AB, GE, Omron, Mitsubishi, Automation Direct (Koyo), and Modbus.

Regards,

Phil

 

Thank-you for the responses. I am looking into them further.