I know of people that can provide you software for DCS systems like Bailey Net90/Infa90 and others. Let me know if this is what you are looking for and I will give you their names.
I Googled DCS emulation
Top is http://www.bjhkd.com/product2.htm
HKD has various DCS emulation software products:
Honeywell
Yokogawa
Foxboro
Fisher-Rosemount
SIEMENS