I was able to get the OT send PC my mpc1000. But not the other way around. On the OT I went to function + project went to midi sync and set the prog ch to send.
I use a Behringer FC 1010 to change the patterns on the OT. PC1 selects pattern 1, PC2 selects pattern 2 etc. Just make sure you got the program change “receive” box checked in the midi synchronize menu.
Also DON’T SEND A PC VALUE OVER 16. It erases every pattern of the project apparently.