Programming
58 ENV-VST-C - Operation / Reference Guide
Each AxLink device contains 255 channels numbered 1-255. The AxLink Channels for the thermostat are defined in the
table below. The Type column indicates who initiates the channel change. The Master directs the thermostat to change its
state through channels with type CMD. The thermostat informs the Master of state changes through channels with type
FDBK. Some channels can be used for both CMD and FDBK.
AxLink Channels
Channel Type Function Description
1-138 Not Used
139 CMD Weather Alert A Weather Alert is active while the channel is ON.
To clear an active Weather Alert set the channel to OFF.
140 CMD Increment Cool Set Point Increases the cool set point by one step per pulse while the
channel is active (ON).
141 CMD Decrement Cool Set Point Decreases the cool set point by one step per pulse while the
channel is active (ON).
142 Not Used
143 CMD Increment Heat Set Point Increases the heat set point by one step per pulse while the
channel is active (ON).
144 CMD Decrement Heat Set Point Decreases the heat set point by one step per pulse while the
channel is active (ON).
145-147 Not Used
148 CMD Increment Humidify Set
Point Continue to increment the humidify set point while the channel is
active, ON, as if the increment button were being pushed.
149 CMD Decrement Humidify Set
Point Continue to decrement the humidify set point while the channel is
active, ON, as if the decrement button were being pushed.
150 CMD Increment Dehumidify Set
Point Continue to increment the dehumidify set point while the channel is
active, ON, as if the increment button were being pushed.
151 CMD Decrement Dehumidify
Set Point Continue to decrement the dehumidify set point while the channel
is active, ON, as if the decrement button were being pushed.
152-159 Not Used
160 FDBK Filter Change Reminder Channel ON: Filter Change active
Channel OFF: Filter Change inactive
161-208 Not Used
209 CMD/FDBK Fan Speed Low Set the Fan Speed to Low when the channel is ON.
210 CMD/FDBK Fan Speed Medium Set the Fan Speed to Medium when the channel is ON.
211 CMD/FDBK Fan Speed High Set the Fan Speed to High when the channel is ON.
212 CMD/FDBK Lock Out State Source ? Master: Set the Lock Out Mode
: TStat: FDBK, Lock Out Mode Changed
Channel ON: Lock Out Mode Enabled,
Channel OFF: Lock Out Mode Disabled.
213 Not Used
214 CMD/FDBK Fan State On Set the Fan state to On while the channel is ON.
215 CMD/FDBK Fan State Auto Set the Fan state to Auto while the channel is ON.
216 FDBK Fan Status Feedback, Fan Status changed, Fan status is controlled by the
TSTAT.
Channel ON: Fan is On,
Channel OFF: Fan is Off.
217-218 Not Used