SH
Controlling thermostat heat setpoint COS: C5
Permissions: Read/Write
Query
Command
Syntax: SN[#] SH?<CR>
Description: Requests the controlling thermostat heat setpoint.
Assignment
Command
Syntax: SN[#] SH=[value]<CR>
Description: Sets the controlling thermostat heat setpoint to [value].
Example: SN1 SH=68<CR>
Response or
COS Message
Syntax: SN[#] SH=[value][scale]<CR>
Example: SN1 SH=65F<CR>
Node address 1 responds with a controlling heat setpoint of 65°F.
Parameters Range
value: heat setpoint
Fahrenheit [40 – 90]
Celsius [4 – 32]
scale: temperature scale [F, C]
F: Fahrenheit
C: Celsius
The thermostat controlling heat setpoint corresponds to the active heat setpoint to which the thermostat is controlling the heating 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 heat setpoint value that causes a deadband violation, the cool setpoint is automatically increased to
fulfill the deadband requirement. If the deadband requirement cannot be fulfilled by increasing the cool 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 Cool or OFF, this command is ignored.
Integer values must be within the range specified for the current temperature scale. The heat setpoint can be changed through the Home
Screens for thermostat control or due to a schedule or hold change. If the heat setpoint is changed at the thermostat, a C5 COS unsolicited
message is issued (if C5 is ON).
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