Leslie speed on/off with Foot Pedal ?

i nearly asked the same:
http://forums.rolandclan.com/index.php?action=show_thread&thread=30753&fid=8&page=1

You could use an on-off type pedal, not an expression pedal.

Yes, i use an on-off type pedal and the same pedal works fine on Nord Electro (also sustain foot pedal can work on Nord that way) ... (???)

i tried this but didnt work because i dont knew/know how i have to route by special internal setting this foot pedal switch (-jack) to switch S1 (effect) on/off...

I can't try this because I do not have such a pedal myself. But I expect this pedal to send a MIDI CC value of 0 when it's off, and send a value of 127 when it's on. Therefore, in the PFX control section you'd assign FOOT-TYPE to control leslie speed with a depth of +63, and it should work.

Of course it works. I tried this with my Boss FV-300L and it works just fine. Once the CC value is from 0 to 63, the leslie is switched to one speed (whether it is slow or fast, it depends on what settings you have in your PFX). From 64 to 127, it switches to the other speed. It's just as you would do if you wanted to control sustain pedal with a foot pedal.
It's just a pure waste of CC resolution. Leslie speed needs only two values, so this can be done with a switch pedal too.
You can assign the controller you want, as long as the pedal transmits the same MIDI CC that you have assigned into the PFX MIDI control. For instance, you can assign MIDI CC01 to the pedal (CC01=Modulation), as most preset organ sounds are controlled with CC01 (or joystick Y-axis).