This is what I received from Nektar:
Update for Case 15164 - "Pacer"
Hi there,
Thanks for your interest in Pacer.
Three of Pacer's presets are dedicated to controlling AxeFXII hardware. 2 of which are setup to turn specific effects on and off and the third is setup control the looper functions. These are presets B5, B6 and C4, respectively.
The first 4 of Pacer's presets are configured to send program change messages, which can be used to select presets on any MIDI compatible device, including AxeFX. Preset B6 has Stomp Switches 5 configured to select the previous scene and Stompe Switch 6 will select the next scene.
In any case, Pacer is completely configurable and most of the functions of the AxeFX are controllable via simple MIDI CCs or program change messages. So you are free to customize the AxeFX presets to function as you would like.
You can activate the Tuner by connecting a Footswitch to the third FS input, when the presets listed above are active. The Tuner will appear on the AxeFX display not on Pacer's display.
Here is a list of the AxeFX functions which are mapped to Pacer's stomp switches, in presets B5, B6 and C4.
B5 - Axe FXII preset 1
- Stomp Switch 1 - Chorus 1 On/Off
- Stomp Switch 2 - Comp 1 On/Off
- Stomp Switch 3 - Delay 1 On/Off
- Stomp Switch 4 - Drive 1 On/Off
- Stomp Switch 5 - Phaser 1 On/Off
- Stomp Switch 6 - Reverb 1 On/Off
- FS Input 1 - Wah 1 On/Off (also changes the function of EXP1)
- FS Input 2 - FX Loop On/Off
- FS Input 3 - Tuner On/Off
- FS Input 4 - Tap Tempo
- EXP1 - Controls Input Volume when Wah is off, controls Wah position when Wah is on
- EXP2 - Output Volume
B6 - Axe FXII preset 2
- Stomp Switch 1 - Amp 1 On/Off
- Stomp Switch 2 - Amp 2 On/Off
- Stomp Switch 3 - Cab 1 On/Off
- Stomp Switch 4 - Cab 2 On/Off
- Stomp Switch 5 - Previous Scene
- Stomp Switch 6 - Next Scene
- FS Input 1 - Wah 1 On/Off (also changes the function of EXP1)
- FS Input 2 - FX Loop On/Off
- FS Input 3 - Tuner On/Off
- FS Input 4 - Tap Tempo
- EXP1 - Controls Input Volume when Wah is off, controls Wah position when Wah is on
- EXP2 - Output Volume
C4 - Axe FXII Looper
- Stomp Switch 1 - Loop Record
- Stomp Switch 2 - Loop Play
- Stomp Switch 3 - Loop Dub
- Stomp Switch 4 - Loop Reverse
- Stomp Switch 5 - Loop Bypass
- Stomp Switch 6 - Loop Undo
- FS Input 1 - Wah 1 On/Off (also changes the function of EXP1)
- FS Input 2 - FX Loop On/Off
- FS Input 3 - Tuner On/Off
- FS Input 4 - Tap Tempo
- EXP1 - Controls Input Volume when Wah is off, controls Wah position when Wah is on
- EXP2 - Output Volume