From what I could determine, the TC by default is set to channel 1, and automatically detects the channel that is being transmitted from the arranger keyboard via the midi output connection of the keyboard. On my TC Harmony-M I had to set it by performing the following:
For Advanced Users
MIDI Setup Mode
The MIDI operations of Harmony-M will work for most
simple setups, but there may be times when more
detailed control is necessary. For this, it's possible to
change the default settings for several necessary options
in the MIDI Setup mode.
Harmony-M's buttons have
alternate functions in this mode and are listed below.
To enter MIDI Setup Mode, hold the A/B and On
footswitches. The 3 LEDS in the indicator bar will flash
indicating MIDI Setup mode.
It is not possible to enter
MIDI Setup mode using an external footswitch.
To exit MIDI Setup mode, press the On footswitch only.
In MIDI Setup mode, the following settings are selected
by the buttons on the face of Harmony-M:
o Main Receive Channel (Selected by the Manual
button) - Receive Channel is ready to be set by
default as you entered MIDI Setup mode (Manual
button lit).To change the receive channel:
1. Play a note on your keyboard.
2. Manually adjust the channel shown in the Preset
display window with the Voice 1 and Voice 2
The LED in the Preset button indicates channel
ten and the 10s position. If the Preset button is lit
and the number 6 is shown in the window for
example, the receive channel is set to 16.The
default channel is 1.
o Continuous Controller (CC's) Receive Channel
(Selected by the Double button) - By default, the
CC receive channel changes along with the Main
If you need to change the CC
channel separately to avoid unwanted parameter
changes from your arranger keyboard or a
sequencer, press the Double button and then
move a slider on your keyboard that's transmitting
on the desired CC channel.This can also be
manually adjusted with the Voice 1 and Voice.
Hope this helps,