Software for modbus

[Texasgrand]

I have a thermostat that communicates in modbus. I want to set up a pilot project to communicate and control from a PC. Any recomendations for software that contains HVAC logic for modbus?

[eyeLON]

If this is a small network of stats and doesn't need much more than scheduling, graphics, trends and alarming then checkout CatNet HMI controller. This a slick webserver that communicates ModBus, LonWorks, or BacNET and is
<$1k.

catnetsystems.com