SC
Controlling thermostat cool setpoint COS: C5
Permissions: Read/Write
Query
Command
Syntax: SN[#] SC?<CR>
Description: Requests the controlling thermostat cool setpoint.
Assignment
Command
Syntax: SN[#] SC=[value]<CR>
Description: Sets the controlling thermostat cool setpoint to [value].
Example: SN1 SC=78<CR>
Response or
COS Message
Syntax: SN[#] SC=[value][scale]<CR>
Example: SN1 SC=78F<CR>
Node address 1 responds with a controlling cool setpoint of 78°F.
Parameters Range
value: cool setpoint
Fahrenheit [42 – 99]
Celsius [6 – 37]
scale: temperature scale [F, C]
F: Fahrenheit
C: Celsius
The thermostat controlling cool setpoint corresponds to the active cool setpoint to which the thermostat is controlling the cooling equipment.
Assignment commands are ignored if the controller type is set to humidistat.
When the thermostat system mode is set to AUTO, the heat and cool setpoints are interdependent and must abide by the deadband. If an
assignment command is received with a cool setpoint value that causes a deadband violation, the heat setpoint is automatically decreased
to fulfill the deadband requirement. If the deadband requirement cannot be fulfilled by decreasing the heat 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 Heat, Emergency Heat or OFF, this command is ignored.
Integer values must be within the range specified for the current temperature scale. The cool setpoint can be changed through the Home
Screens for thermostat control or due to a schedule or hold change. If the cool setpoint is changed at the thermostat, a C5 COS unsolicited
message is issued (if C5 is ON).
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