Only 2 GCX’s out of 3?

Q & A for building and interfacing your rack gear with Ground Control Pro and GCX-based systems.
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roybeukers
Posts: 12
Joined: Sun Aug 13, 2017 2:00 am

Only 2 GCX’s out of 3?

Post by roybeukers » Mon Jan 08, 2018 6:00 pm

Hi Guys,

I have 3 GCX’s. I’m testing them with my laptop and a midi interface.
When I send the sysex code to set them in the mode for multiple GCX’s, the activity light turns on on all 3 devices.
CC 80 - 87 work in the first device, 88 - 95 on the second, but 96 - 103 don’t do anything.
At first I thought the second GCX wasn’t transferring the midi correctly, but I’ve changed the order to all possibilities without any luck. I’ve also replaced all midi cables. Any ideas?
Kind regards, Roy

JohnClark
Posts: 7086
Joined: Tue May 05, 2009 2:33 pm
Location: The Lab

Re: Only 2 GCX’s out of 3?

Post by JohnClark » Mon Jan 08, 2018 10:48 pm

The Loops of GCX #3 will actually respond to Control Changes 64 - 71.

Try those and let us know how it goes!

roybeukers
Posts: 12
Joined: Sun Aug 13, 2017 2:00 am

Re: Only 2 GCX’s out of 3?

Post by roybeukers » Tue Jan 09, 2018 2:09 am

I feel so stupid.... but thnx a million!

:D

JohnClark
Posts: 7086
Joined: Tue May 05, 2009 2:33 pm
Location: The Lab

Re: Only 2 GCX’s out of 3?

Post by JohnClark » Tue Jan 09, 2018 11:54 am

I wouldn't say that... it isn't shown in the manual and it doesn't exactly follow a logical number flow.

Enjoy!

p.s. here is the full set of Latching and Momentary Control Change numbers for all four GCXs...

GCX #1
Normal (Latching) = 80-87 / Momentary = 104-111

GCX #2
Normal (Latching) = 88-95 / Momentary = 112-119

GCX #3
Normal (Latching) = 64-71 / Momentary = 96-103

GCX #4
Normal (Latching) = 56-63 / Momentary = 72-79

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