That would depend on what you are trying to connect to. The 7350 is a motion controller with 4 68 pin connectors. the TBX-68 is just a dumb terminal block with 68 screw connectors. A 68 conductor cable connects between the TBX-68 and the 7350. There is a one to one correspondance between the labels on the screw connectors and the pin of whatever connector on the 7350 you have connected. If you can determine what signal pin on the 7350 you want to connect to, it would be numbered the same on the TBX-68.
Do you have any idea what the pins on the micro are and what you need it to do in relationship to the 7350? There's a dedicated motion control board if you are looking for help with that.