Show Cue System

I have a Yamaha 01V96 and I set scenes from SCS sending MIDI Program Change.
But now I want to mute channels and do not find how to do it.
I do not understand midi format of the message that I must send to the mixer.

Does anyone sent parameter changes or control changes to mute channels to this mixer?
If yes, can you give me an exemple?

I will be very grateful if somebody can give me an idea.
Lluís

Mute Channel is set via Midi Control Change. Settings are on the Setup Page on the 01V96. Or read out via Midi-in in SCS by press On Button of the 01V. PC and 01V96 via Midi-In and Midi-out connected