Not exactly sure but this is from the manual…
Midi Clock Tap Tempo
Description
Sends a Midi Clock signal to out from USB and 5 Pin Midi. Syncs your Midi Clock enabled devices to a common BPM.
You can set the tempo in the parameters, and then choose if you want the device to show the tap menu.
If selected, the MC6 will load the tap tempo screen when the preset is activated.
If not selected, the MC6 will send out the Midi Clock messages according to the preset tempo. When another event occurs i.e. a switch is pressed or expression is moved, the Midi Clock messages will stop.
You can read more here: https://morningstar-engineering.github.io/MC6-MKII-Midi-Controller/site/glossary/07-midi-type-glossary/
I should probably add im not endorsed by these folks just a fan of the foot controller