Assigning a pattern to a pad in Maschine +?

Sorry but that makes no sense.

If you first create a drum pattern, this will result in a MIDI pattern. If you then resample this pattern into audio, it will no longer be MIDI, only audio. Then, you say, you want to open up Maschine as a plugin inside Logic, and what? record the triggering of this audio loop into a MIDI clip in logic? Why?

Or do you mean that you want to use the "control Maschine pattern changes via MIDI" feature, and use logic for changing the MIDI patterns inside Maschine running as a plugin inside Logic?

Maybe it would be more helpful if you explained what you are trying to accomplish.. this context could make things more clear..

If I'd think about what you might want just based on your OP, I'm assuming you have a pattern in Maschine you want to reuse in Logic? Not as MIDI, but as an audio loop? Easiest way to do this is to export your pattern into an audio file, and then importing this audio file into logic. This way you dont even have to run Maschine as a plugin in Logic at all, just open Maschine standalone application, solo out your pattern, export, quit Maschine, open logic, import your exported audio loop.

If on the other hand you want to keep everything multitrackable and MIDI, you use the Maschine plugin inside Logic, and use the "control Maschine pattern change via MIDI" function to send MIDI notes from Logic to Maschine plugin at the right moments to trigger/switch patterns along with the timeline.

One more way to skin this cat, you could resample the Maschine loops into Logic Audio tracks directly. Just select the Maschine plugin as your audio input on a Logic's audio track, record/trim/loop, done. Heck, there's probably many, many ways you could do this.

Or are you using Maschine+ in standalone mode? If you are, then you obviously cannot use the desktop Maschine plugins inside Logic.. in that case, just treat Maschine+ as any other hardware instrument in your studio, track it in with your audio interface.

Ah yes, you'd use ableton link or DIN MIDI sync and DIN MIDI for sending notes to M+

You cannot use the USB to send MIDI to M+ running in standalone from the computer, because M+ always wants to be USB MIDI host, same as your DAW also wants to be a USB MIDI host. There can never be two USB MIDI hosts in the same system, it doesn't work that way.

I hope your audiointerface has DIN MIDI ports

Think of it like sending MIDI clock and MIDI notes to any other DIN MIDI only hardware synth in your setup and recording the result