In this scenario, either M:S or MF could be the clock “master” but let’s choose the M:S as the master.
Therefore the hardware MIDI connection to make is from M:S MIDI Out port to MF MIDI In port. You could just use a TRS (“stereo”) 3.5 mm cable or you can use a 5-pin DIN MIDI cable connected to the adaptors that are supplied with both M:S and MF.
MIDI sync can be established by sending MIDI clock messages from the master to the slave. Both units need to be set up to ensure that this is happening.
In the M:S’s SETTINGS > MIDI > SYNC sub-menu:
- set CLK OUT to “On” and
- (temporarily) set PCH OUT to “Off”.
In the M:S’s SETTINGS > MIDI > OUT CHAN sub-menu:
- (temporarily) set all of T1 Out … T6 Out to “OFF”;
- (temporarily) set FX Out to “OFF”.
In the M:S’s SETTINGS > MIDI > PORTS sub-menu:
- set OUT TO to “MID”,
- set OUT/THRU to “Out”, and
- you may also need to adjust the OUT POL setting.
In the M:S’s SETTINGS > MIDI > FILTER sub-menu:
- (temporarily) set ENCS to “INT”.
In the MF’s Utility > Sync menu:
- set Source to “MIDI” or “Auto”.
If you set the MF’s Rate to “Sync”, its Arp and Sequencer should follow the M:S’s tempo and transport controls.
Have a look at the respective sections of the manuals to check why I recommended the settings above and for more information.
It should work but, if it doesn’t, report back on the problem.
You have two modern and nice pieces of gear: have fun!