[Al Skierkiewicz]

Iron,
There are three wiring diagrams on the First website, and one of them will answer your questions as to wiring 24 volts solenoids. Essentially, the solenoid module is merely switching whatever voltage is wired to it's terminals. Under Robot rules, you can wire one and only one solenoid module to the 24 volt power supply on the PD that also powers the Crio. You then can control the 24 volt solenoids from that module. There is a power supply on the PD that is designed to convert 12 volts to 24 volts specifically to power the Crio. It is called a "boost" supply. If team chooses to use both 24 volt solenoid valves and 12 volt solenoid valves on the robot, then they can use two modules, one wired for 12 and one wired for 24 volts. 24 volt solenoid valves will not work reliably on 12 volts as the battery does not remain at 12 volts during the entire match.