S
Active controlling setpoint COS: N/A
Permissions: Read/Write
Query
Command
Syntax: SN[#] S?<CR>
Description: Requests the controlling setpoint.
Assignment
Command
Syntax: SN[#] S=[value]<CR>
Description: Sets the controlling setpoint to [value].
Example: SN1 S=78<CR>
Response Syntax: SN[#] S[sp]=[value][scale]<CR>
Examples: SN1 SH=68F<CR>
Node address 1 responds with a controlling heat setpoint of 68°F.
SN1 SC=79F<CR>
Node address 1 responds with a controlling cool setpoint of 79°F.
SN1 SHUM=35%<CR>
Node address 1 responds with a controlling humidification setpoint of 35% RH.
SN1 SDEH=50%<CR>
Node address 1 responds with a controlling dehumidification setpoint of 50% RH.
Parameters Range
value: setpoint
Fahrenheit [42 – 99]
Celsius [6 – 37]
Humidity [10 – 90]
scale: scale [F, C, %]
F: Fahrenheit
C: Celsius
%: percent RH
sp: controlling mode [H, C, HUM, DEH]
H: heat
C: cool
HUM: humidification
DEH: dehumidification
The controlling setpoint corresponds to the active setpoint to which the control is controlling the equipment.
When the control system mode is set to AUTO, the controlling mode is determined by the control. In addition, when the system mode is set
to AUTO, the heat and cool setpoints or humidification and dehumidification setpoints are interdependent and must abide by the deadband. If
an assignment command is received with a setpoint value that causes a deadband violation, the opposite setpoint is automatically increased
or decreased to fulfill the deadband requirement. If the deadband requirement cannot be fulfilled by increasing or decreasing the opposite
setpoint, the command is ignored and no response sent.
If an assignment command is received while the thermostat is running the program schedule, the thermostat automatically initiates a
temporary hold with an end time of the start time of the next scheduled event. If a hold is active at the time of the assignment command,
the hold setpoint is modified. In addition, if a hold is initiated as a result of the receipt of this command, a C17 COS unsolicited message is
issued (if C17 is ON).
If a query or an assignment command is received and the thermostat program format is programmable (i.e. not non-programmable), and the
system mode is set to OFF, this command is ignored.
Integer values must be within the range specified for the current scale.
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