Installation Manual

146
Lutron integration protocol
HVAC Command-specific fields
Action Numbers and Parameters:
Action Action Number Parameters
Set (#) or Get (?) Current Temperature (°F)
2
1 Temperature = 32–104 °F
Set (#) or Get (?) Operating Mode 3 Mode (1 = Off, 4 = Auto)
Set (#) or Get (?) Fan Mode 4
Mode (1 = Auto, 4 = No Fan, 5 = High, 6 = Medium,
7 = Low)
Set (#) or Get (?) Call Status 14
0 = None, Last was Heat
1 = Heat Stage 1
5 = None, Last was Cool
6 = Cool Stage 1
8 = Off
Set (#) or Get (?) Current Temperature (°C) 15 Temperature = 0 –40 °C
Set (#) or Get (?) Single Setpoint (°F) and
Drifts
1, 2
18
Single Setpoint =
50 – 90 °F
Negative Drift =
0 – 15 °F
Positive Drift =
0 – 15 °F
Set (#) or Get (?) Single Setpoint (°C) and
Drifts
1, 2
19
Single Setpoint =
10 – 32 °C
Negative Drift =
0 – 8 °C
Positive Drift =
0 – 8 °C
Example HVAC Commands
Operation Command String
Execute: #HVAC, Integration ID, Action Number, Parameters
Set Single Setpoint to 75 °F, Positive Drift to 2 °F and Negative Drift to 1 °F. #HVAC,21,18,75,1,2<CR><LF>
Set System Operating Mode to “Auto”. #HVAC,21,3,4<CR><LF>
Set Fan Mode to “Medium”. #HVAC,21,4,6<CR><LF>
Set Single Setpoint to 20 °C and leave the Drifts unaffected #HVAC,21,19,20,255,255<CR><LF>
Query: ?HVAC, Integration ID, Action Number
What is the Current Temperature? ?HVAC,21,1<CR><LF>
What is the Current Operating Mode? ?HVAC,21,3<CR><LF>
What is the Current HVAC Call Status? ?HVAC,21,14<CR><LF>
Response: ~HVAC, Integration ID, Action Number, Parameters
Current Temperature is 70 °F. ~HVAC,21,1,70<CR><LF>
Current Operating Mode is “Off”. ~HVAC,21,3,1<CR><LF>
1. To leave a parameter unchanged, use “255” as the value for that parameter when sending the command.
2. Allow for reported temperature values to be zero padded, with up to 3 digits before the decimal point, and 2 digits after.
– Possible reported values of 5 °C: “005”, “05”, “5”, “005.”, “005.”, “5.”, “005.0”, “05.0”, “5.0”, “005.00”, “05.00”, “5.00”
– Possible reported values of 5.5 °C: “005.5”, “05.5”, “5.5”, “005.50”, “05.50”, “5.50”
– Possible reported values of 21 °C: “021”, “21”, “021.0”, “21.0, “021.00,” “21.00”
– Possible reported values of 21.5 °C: “021.5”, “21.5”, “021.50”, “21.50”
Palladiom Thermostat (continued)
HVAC Commands
HVAC Command Format
Use “HVAC Command-specific fields” tables
to complete these command fields.
Operation
Command
Integration ID (example)
#HVAC,21, Action Number, Parameters