KORG MICROX X50 - Manual (Page 177)

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*5 Controlled on the global MIDI channel.
*6 NRPN (Non Registered Parameter Number) and Data
Entry can be used to control the following parameters.
Arpeggiator on/off
[Bn 63 00 Bn 62 02 Bn 06 nn] (nn:00–3F off, 40–7F on)
Arpeggiator gate control
[Bn 63 00 Bn 62 0A Bn 06 nn] (nn:00–7F)
Arpeggiator velocity control
[Bn 63 00 Bn 62 0B Bn 06 nn] (nn:00–7F)