Cwejman S1 MK2 MIDI CCs & NRPNs

MIDI implementation details for the Cwejman S1 MK2.

Last update: April 23, 2026 • 133 parameters

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Global

Parameter NRPN MSB NRPN LSB Range Usage Description Orientation
Base note 0 1 [0–127] —
Lowest possible note that will be played
0-based

CV outputs

Parameter NRPN MSB NRPN LSB Range Usage Description Orientation
Control voltage 1 function 0 2 [0–127] —
Note: CV1 is always handled as main tune control; this parameter currently has no effect
0-based
Control voltage 2 function 0 3 [0–127]
0~119: Respond to CC number; 120: Unused; 121: Note-On velocity; 122: Unused; 123: Accent; 124: Key aftertouch; 125: Note-Off velocity; 126: Channel aftertouch; 127: Unused
 — 0-based
Control voltage 3 function 0 4 [0–127]
0~119: Respond to CC number; 120: Unused; 121: Note-On velocity; 122: Unused; 123: Accent; 124: Key aftertouch; 125: Note-Off velocity; 126: Channel aftertouch; 127: Unused
Note: Default 1 = Modulation wheel
0-based
Control voltage 4 function 0 5 [0–127]
0~119: Respond to CC number; 120: Unused; 121: Note-On velocity; 122: Unused; 123: Accent; 124: Key aftertouch; 125: Note-Off velocity; 126: Channel aftertouch; 127: Unused
Note: Default 124 = Channel aftertouch
0-based
Control voltage 5 function 0 6 [0–127]
0~119: Respond to CC number; 120: Unused; 121: Note-On velocity; 122: Unused; 123: Accent; 124: Key aftertouch; 125: Note-Off velocity; 126: Channel aftertouch; 127: Unused
Note: Default 5 = Glide time CC
0-based
Control voltage 6 function 0 7 [0–127] —
Note: CV6 is always handled as pitch wheel out; this parameter currently has no effect
0-based
Control voltage 2 range (scaling) 0 9 [0–63]
0~63: 0% to 200% scaling
Scaling for controllers/velocity/aftertouch when CV2 Function is not Accent
Note: Default 32 = 5V full swing at data=127 (100%); 64 = 200%; 16 = 50%
0-based
Control voltage 2 range (accent threshold) 0 9 [0–127]
0~127: Velocity threshold
Note-On velocity threshold at which CV2 goes to 5V when CV2 Function is Accent
Note: Applies only when CV2 Function = 123 (Accent)
0-based
Control voltage 3 range (scaling) 0 10 [0–63]
0~63: 0% to 200% scaling
Scaling for controllers/velocity/aftertouch when CV3 Function is not Accent
Note: Default 32 = 5V full swing at data=127 (100%); 64 = 200%; 16 = 50%
0-based
Control voltage 3 range (accent threshold) 0 10 [0–127]
0~127: Velocity threshold
Note-On velocity threshold at which CV3 goes to 5V when CV3 Function is Accent
Note: Applies only when CV3 Function = 123 (Accent)
0-based
Control voltage 4 range (scaling) 0 11 [0–63]
0~63: 0% to 200% scaling
Scaling for controllers/velocity/aftertouch when CV4 Function is not Accent
Note: Default 32 = 5V full swing at data=127 (100%); 64 = 200%; 16 = 50%
0-based
Control voltage 4 range (accent threshold) 0 11 [0–127]
0~127: Velocity threshold
Note-On velocity threshold at which CV4 goes to 5V when CV4 Function is Accent
Note: Applies only when CV4 Function = 123 (Accent)
0-based
Control voltage 5 range (scaling) 0 12 [0–63]
0~63: 0% to 200% scaling
Scaling for controllers/velocity/aftertouch when CV5 Function is not Accent
Note: Default 32 = 5V full swing at data=127 (100%); 64 = 200%; 16 = 50%
0-based
Control voltage 5 range (accent threshold) 0 12 [0–127]
0~127: Velocity threshold
Note-On velocity threshold at which CV5 goes to 5V when CV5 Function is Accent
Note: Applies only when CV5 Function = 123 (Accent)
0-based
Control voltage 6 range 0 13 [0–24] —
Pitch wheel range in semitones
Note: Default is ±24 semitones
0-based

Pedals

Parameter CC Range Usage Description Orientation
Hold pedal 64 [0–127] — — 0-based
Legato pedal 68 [0–127] —
Note: Received on MIDI channel+1; causes legato effect by not triggering Trig1 on Note-On
0-based

Channel mode

Parameter CC Range Usage Description Orientation
All sound off 120 [0–127] — — 0-based
Reset all controllers 121 [0–127] — — 0-based
All notes off 123 [0–127] — — 0-based
Omni off 124 [0–127] — — 0-based
Omni on 125 [0–127] —
Note: Second byte is ignored
0-based

Assignable parameters A

Parameter CC Range Usage Orientation
Assignable parameter 000 0 [0–127] — 0-based
Assignable parameter 001 1 [0–127] — 0-based
Assignable parameter 002 2 [0–127] — 0-based
Assignable parameter 003 3 [0–127] — 0-based
Assignable parameter 004 4 [0–127] — 0-based
Assignable parameter 005 5 [0–127] — 0-based
Assignable parameter 007 7 [0–127] — 0-based
Assignable parameter 008 8 [0–127] — 0-based
Assignable parameter 009 9 [0–127] — 0-based
Assignable parameter 010 10 [0–127] — 0-based
Assignable parameter 011 11 [0–127] — 0-based
Assignable parameter 012 12 [0–127] — 0-based
Assignable parameter 013 13 [0–127] — 0-based
Assignable parameter 014 14 [0–127] — 0-based
Assignable parameter 015 15 [0–127] — 0-based

Assignable parameters B

Parameter CC Range Usage Orientation
Assignable parameter 016 16 [0–127] — 0-based
Assignable parameter 017 17 [0–127] — 0-based
Assignable parameter 018 18 [0–127] — 0-based
Assignable parameter 019 19 [0–127] — 0-based
Assignable parameter 020 20 [0–127] — 0-based
Assignable parameter 021 21 [0–127] — 0-based
Assignable parameter 022 22 [0–127] — 0-based
Assignable parameter 023 23 [0–127] — 0-based
Assignable parameter 024 24 [0–127] — 0-based
Assignable parameter 025 25 [0–127] — 0-based
Assignable parameter 026 26 [0–127] — 0-based
Assignable parameter 027 27 [0–127] — 0-based
Assignable parameter 028 28 [0–127] — 0-based
Assignable parameter 029 29 [0–127] — 0-based
Assignable parameter 030 30 [0–127] — 0-based
Assignable parameter 031 31 [0–127] — 0-based

Assignable parameters C

Parameter CC Range Usage Orientation
Assignable parameter 032 32 [0–127] — 0-based
Assignable parameter 033 33 [0–127] — 0-based
Assignable parameter 034 34 [0–127] — 0-based
Assignable parameter 035 35 [0–127] — 0-based
Assignable parameter 036 36 [0–127] — 0-based
Assignable parameter 037 37 [0–127] — 0-based
Assignable parameter 039 39 [0–127] — 0-based
Assignable parameter 040 40 [0–127] — 0-based
Assignable parameter 041 41 [0–127] — 0-based
Assignable parameter 042 42 [0–127] — 0-based
Assignable parameter 043 43 [0–127] — 0-based
Assignable parameter 044 44 [0–127] — 0-based
Assignable parameter 045 45 [0–127] — 0-based
Assignable parameter 046 46 [0–127] — 0-based
Assignable parameter 047 47 [0–127] — 0-based

Assignable parameters D

Parameter CC Range Usage Orientation
Assignable parameter 048 48 [0–127] — 0-based
Assignable parameter 049 49 [0–127] — 0-based
Assignable parameter 050 50 [0–127] — 0-based
Assignable parameter 051 51 [0–127] — 0-based
Assignable parameter 052 52 [0–127] — 0-based
Assignable parameter 053 53 [0–127] — 0-based
Assignable parameter 054 54 [0–127] — 0-based
Assignable parameter 055 55 [0–127] — 0-based
Assignable parameter 056 56 [0–127] — 0-based
Assignable parameter 057 57 [0–127] — 0-based
Assignable parameter 058 58 [0–127] — 0-based
Assignable parameter 059 59 [0–127] — 0-based
Assignable parameter 060 60 [0–127] — 0-based
Assignable parameter 061 61 [0–127] — 0-based
Assignable parameter 062 62 [0–127] — 0-based
Assignable parameter 063 63 [0–127] — 0-based

Assignable parameters E

Parameter CC Range Usage Orientation
Assignable parameter 065 65 [0–127] — 0-based
Assignable parameter 066 66 [0–127] — 0-based
Assignable parameter 067 67 [0–127] — 0-based
Assignable parameter 069 69 [0–127] — 0-based
Assignable parameter 070 70 [0–127] — 0-based
Assignable parameter 071 71 [0–127] — 0-based
Assignable parameter 072 72 [0–127] — 0-based
Assignable parameter 073 73 [0–127] — 0-based
Assignable parameter 074 74 [0–127] — 0-based
Assignable parameter 075 75 [0–127] — 0-based
Assignable parameter 076 76 [0–127] — 0-based
Assignable parameter 077 77 [0–127] — 0-based
Assignable parameter 078 78 [0–127] — 0-based
Assignable parameter 079 79 [0–127] — 0-based

Assignable parameters F

Parameter CC Range Usage Orientation
Assignable parameter 080 80 [0–127] — 0-based
Assignable parameter 081 81 [0–127] — 0-based
Assignable parameter 082 82 [0–127] — 0-based
Assignable parameter 083 83 [0–127] — 0-based
Assignable parameter 084 84 [0–127] — 0-based
Assignable parameter 085 85 [0–127] — 0-based
Assignable parameter 086 86 [0–127] — 0-based
Assignable parameter 087 87 [0–127] — 0-based
Assignable parameter 088 88 [0–127] — 0-based
Assignable parameter 089 89 [0–127] — 0-based
Assignable parameter 090 90 [0–127] — 0-based
Assignable parameter 091 91 [0–127] — 0-based
Assignable parameter 092 92 [0–127] — 0-based
Assignable parameter 093 93 [0–127] — 0-based
Assignable parameter 094 94 [0–127] — 0-based
Assignable parameter 095 95 [0–127] — 0-based

Assignable parameters G

Parameter CC Range Usage Orientation
Assignable parameter 102 102 [0–127] — 0-based
Assignable parameter 103 103 [0–127] — 0-based
Assignable parameter 104 104 [0–127] — 0-based
Assignable parameter 105 105 [0–127] — 0-based
Assignable parameter 106 106 [0–127] — 0-based
Assignable parameter 107 107 [0–127] — 0-based
Assignable parameter 108 108 [0–127] — 0-based
Assignable parameter 109 109 [0–127] — 0-based
Assignable parameter 110 110 [0–127] — 0-based
Assignable parameter 111 111 [0–127] — 0-based

Assignable parameters H

Parameter CC Range Usage Orientation
Assignable parameter 112 112 [0–127] — 0-based
Assignable parameter 113 113 [0–127] — 0-based
Assignable parameter 114 114 [0–127] — 0-based
Assignable parameter 115 115 [0–127] — 0-based
Assignable parameter 116 116 [0–127] — 0-based
Assignable parameter 117 117 [0–127] — 0-based
Assignable parameter 118 118 [0–127] — 0-based
Assignable parameter 119 119 [0–127] — 0-based

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