I posted my question regards this issue on the Motivator.com forum. Here is the reply from the "MASTER of Motif......Bad Mister. I am posting it here for those who just might have experienced wheat I have or just would like to expand their knowledge.. Hope this helps someone:
Is it possible for the XS 8 to transmit any kind of data to another midi device even when “Transmit Channel” is set to “OFF” ?
The Transmit Channel setting as correctly pointed out only applies to the KEYBOARD when you are in a single timbre mode (ie, VOICE or PERFORMANCE)
When you go to SONG or PATTERN mode, your KEYBOARD transmits (internally/externally) through the MIDI Transmit channel of the currently selected TRACK.
From SONG or PATTERN mode:
Light the [TRACK] button
Select a TRACK -
you will be transmitting on the MIDI channel on which that track is set to transmit.
If the Track you select is set to transmit OUT (to an external device) on MIDI channel 1 then the keyboard will trigger that external device on MIDI channel 1. If the Track is set to Transmit CH = “OFF” then when that TRACK SELECT button is selected you will not be able to transmit from the leyboard at all. If you additionally set the INT or EXT option you can choose where the data from the keybed (and controllers) are sent
If the Track is set to only “INT” then only the internal tone engine will sound when you select that Tracks number
If the Track is set to “EXT” then the keyboard will also trigger an external device connected. Etc.
The [UTILITY] mode “BASIC RECEIVE CHANNEL” and the “KEYBOARD TRANSMIT CHANNEL” parameters should be understood as applying only in the VOICE and PERFORMANCE modes. When you go to the SONG or PATTERN mode, the MOTIF XS is set to receive on a per PART basis. Make sense? Each of the 16 PARTS can be set individually as to what MIDI channel it is going to receive data on. And likewise, when you select a TRACK you are doing so to communicate with the PART assigned to a specific MIDI channel. It happens to make perfect sense to transmit on the MIDI channel of the TRACK you select to record into.
While the VOICE and PERFORMANCE mode are controlled by the Basic Receive and Keyboard Transmit Channel UTILITY mode settinngs. SONG and PATTERN mode are controlled by the parameters within each SONG and PATTERN setup. Make sense? Here’s how to set the TRANSMIT CHANNEL for each of the TRACK buttons 1-16
From the main SONG or PATTERN screen
Press [F3] TRACK
Press [SF1] OUT
Here you can determine what each TRACK button - will do when you Select it.
You can set a Track to transmit on CHANNEL 1-16 or OFF, you can route it INTERNALLY or EXTERNALLY or both.
As you already know each PART in the MIXING setup can be set to a unique MIDI receive channel
Select the PART -
Press [F1] VOICE
Press [SF1] VOICE
The MIDI RECEIVE CHANNEL is selectable for each PART.
Other MIDI data that is on the wire...
To answer the question about MIDI data - the Motif XS also sends MIDI clock messages (F8) and Active Sensing messages (FE) over its MIDI connector so it is possible that any receiving device will identify these types of messages which are pretty much constant.