AMX ENV-VST-C Operation/Reference Manual page 29

AxLink Commands (Cont.)
FM
Sets or changes
the thermostat's
scale, date, or
time format.
LK
Configures button
lockout settings
for temperature,
mode, and fan
speed
ViewStat Color Communicating Thermostat
Syntax:
FM [S<TSCL>] [D<DFMT>] [T<TFMT>]
Variable:
TSCL = A single character: F for Fahrenheit or C for Celsius
DFMT = A single character: D for DD/MM/YYYY, M for MM/DD/YYYY, or
Y for YYYY/MM/DD
TFMT = A single character: 1 for 12-hour or 2 for 24-hour clock.
Example:
SEND_COMMAND 'FM SF'
Sets the thermostat scale to Fahrenheit.
SEND_COMMAND 'FM DD T2'
Sets the date format to DD/MM/YYYY and the time format to 24-hour clock.
You can completely block anyone from using the buttons on the front of the unit to change
the hold temperature, mode, or fan speed changes, or restrict them by time. You can also
restrict hold temperature changes by range. If you configure a time limit, the hold
temperature, mode, or fan speed reverts to the original settings after the set time expires.
If you configure a range, the hold temperature may not be set higher or lower than the set
temperature +/- the range.
Syntax:
LK [MR<State>] [MT<Time>] [FR<State>] [FT<Time>] [TR<State>]
[TT<Time>] [RR<Range>]
Variable:
State = An integer value, 0 for disable and 1 for enable.
Time = An integer representing the number of minutes a change is enabled.
Range = An integer representing the number of degrees a temperature is allowed to be
changed. Degrees are in the same scale as set on the thermostat.
MR = Mode Restriction, State=1: disable all changes to Mode. State=0: restrictions to
Mode determined by MT, Mode Time Restriction.
MT = Time Restriction placed on changes to TSTAT Mode
FR = Fan Speed Restriction, State=1: disable all changes to Fan Speed. State=0:
restrictions to Fan Speed determined by FT, Fan Speed Time Restriction.
FT = Time Restriction placed on changes to Fan Speed
TR = Temperature Restriction, State=1: disable all changes to Temperature Heat and
Cool Setpoints. State=0: restrictions to Temperature Heat and Cool Setpoints
determined by TT, Temperature Time Restriction, and TR, Temperature Range
Restriction.
TT = Time Restriction placed on changes to Temperature
RR = Range Restriction placed on changes to Temperature
Examples:
SEND_COMMAND 'LK MR1 TR3'
Configures the lockout to completely block changes to Mode and restrict changes to the
temperature setting to ±3 degrees.
SEND_COMMAND 'LK TT90 FT90'
Configures the lockout to allow changes to the temperature and fan speed for 90 minutes
before reverting to the original settings.
Programming
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