Specifications

M1 Control RS-232 ASCII String Protocol Page 20 of 68 Rev. 1.79 July 16, 2009
4.6 Touchscreen Audio Command (CA)
This command is used by the touchscreens to request audio status data from the
M1XEP for audio control display. It is not used by the M1. The M1XEP intercepts
the command packet and sends translated commands to the audio equipment. This
command is available on ELKRMS touchscreen software.
4.6.1 Request Audio Data (ca)
08 – Length as ASCII hex
ca – Read custom value
NN – Which zone to request data on. ASCII decimal value
00 – future use
CC – Checksum
Example: 08ca010003 Request audio zone 1 data.
4.6.2 Reply With Audio Data (CA)
20CAnnpssvvvbbbtttlaaamd00000000CC
nn - zone (“01” - “18”)
p - zone power (‘0’ = off, ‘1’ = on)
ss - source (“01” – “12”)
vvv - volume (“000” – “100”)
bbb - bass (“000”=down(-), “050”= center, “100”=up(+))
ttt - treble (“000”=down(-), “050”= center), “100”=up(+))
l - loudness (‘0’=off, ‘1’=on)
aaa - balance (“000”=left, “050”=center, “100”=right)
m - party mode (‘0’=off, ‘1’=on, ‘2’=master)
d - do not disturb (‘0’=off, ‘1’=on)
00000000 - Eight future use bytes
CC - checksum
Example: 20CA0110205006004010500000000000C1 Audio Zone 1,
Audio Zone Power On, source 2, volume 50%, bass 60=10 right of
center, treble 40=10 left of center,, loudness on, balance
center, party mode off, do not disturb off.
4.7 Output Change Update (CC)
0ACCZZZS00CC
0A – Length as ASCII hex
CC – Zone Change Message Command
ZZZ – Output Number, 1 based
S – Output State, 0 = OFF, 1 = ON
00 – future use
CC – Checksum
Example: 0ACC003100E5 Output change – Output 3, changed to ON
This transmission update option transmits the updated status
whenever it changes and is enabled by setting the location TRUE in
the M1 Control Global Programming Locations 37. Example: “Xmit
OutputChgs–ASCII” (Yes or No)