Are you wanting the systems synced together? If you just want to get your MPC midi sequences into Logic you & can get them into your computer, via zip for example, you can then open them in Logic.
Otherwise you can look at your syncing options in both the Logic & MPC manuals. Have the MPC as the slave device. Connect from a midi out to the computer's midi in, the same way you would connect any other external midi controller. Then solo the MPC tracks you want to record, start Logic & record your midi data.
Once you have the syncing sorted out it should be easy providing you know your Logic & MPC basics.


