Sorry, but you are being given wrong advice.
The Rocktron is a MIDI device, which can control stage lighting, and prerecorded tracks, or other midi available rack mount processors...
However, if you had a MIDI Looper, the rocktron is a highly programmable midi switcher which can facilitate pedal changing, and even control multiple banks of devices at the same time.
You can control pedals, but another device is required. Many people use it like this. Voodoo labs has a setup like this which requires 2 devices, a pedal controller, and Midi looper. The All Access is the same thing, but costs more, and ca do more (presumably)