AMX VST Instruction Manual page 16

ViewStat Programming Protocol
Communication Control Commands (Cont.)
Command
C9
COS - Scroll Up (thermostat
button)
C10
COS - Scroll Down (thermo-
stat button)
C11
COS - Enter Button activation
C12
COS - Backlight Ready
(Cont.)
12
Description
When the scroll-up button (top button next to the text messaging display) is
pressed or released.
Example of response:
SN4 SCUP = ON
SN4 SCUP = OFF
When the scroll-down button (bottom button next to the text messaging display)
is pressed or released.
Example of response:
SN5 SCDN = ON
SN5 SCDN = OFF
When the ENTER button is pressed or released.
Example of response:
SN3 ENTR = ON
SN3 ENTR = OFF
When the thermostat backlight enters the ready state (i.e. room illuminance
less than that set at the thermostat).
Example of response: SN1 BLREADY = ON
ViewStat Communicating Thermostat - Programming Protocol Reference Guide