Is there a way to send MULTIPLE surround outputs?

Hello all,

I have the need to send multiple surround outputs to a different machine (machine 2 has both Logic Pro and PT on it) via MADI. Is this possible? Obviously the "Master Output" has a "Surround" setting, but is there a way to cascade or ascend the outputs in order to send out multiple surround signals? So in 5.1, Surround 1 = ch. 1-6, Surround 2 = ch. 7-12, etc. all the way up to 32?

Thanks in advance!!