Echo 8870 installation manual Communication Control Commands, Thermostat Sensing Commands

MODEL 8870 BASIC COMMAND SET

COMMAND	DESCRIPTION	VALUE
Communication Control Commands
CR	Command Response Control	Silent / Quiet / Normal
C1	Change of State (COS) – HVAC relays	ON/OFF
C2	COS – Temperature	ON/OFF
C3	COS – Remote Temperature	ON/OFF
C5	COS – Set Points	ON/OFF
C6	COS – Network Override	ON/OFF
C7	COS – Mode	ON/OFF
C8	COS – Fan	ON/OFF
HOLD	User Hold Status	ON / OFF
NAME	Location Name	<String>
ID	Report Model No. and software rev.	Read Only
Thermostat Sensing Commands
SCALE	Command Temperature Scale	F / C (Fahrenheit/Celsius)
TEMP, T	Report Thermostat Room Temperature	Read Only
HUM	Report Thermostat Room Humidity	Read Only
	(requires humidity control sensor)
RSM	Identify all external sensors connected	Read Only
	to a thermostat’s local communication network
RxSy	Report value of any sensor on thermostat’s	Read Only
(x = 1-4; y = 1,2) local communication network
OT	Report Thermostat Remote “Outdoor” Temperature	Read Only
R	Report Thermostat Remote “Outdoor” Temperature	Read Only
OH	Report Thermostat Remote Humidity	Read Only
Thermostat HVAC Operational Commands
SH	Heat Mode Set Point	Two or three digit integer: 40 – 88 for °F; 4 – 31 for °C
SH++	Increment heat set point	Integer value which when added to the current heat
		set point does not fall outside the SH limits
SH--	Decrement heat set point	Integer value which when deducted from the current
		heat set point does not fall outside the SH limits
SC	Cool Mode Set Point	Two or three digit integer: 42 – 90 for °F; 6 – 33 for °C
SC++	Increment cool setpoint	Integer value which when added to the current cool
		set point does not fall outside the SC limits
SC--	Decrement cool setpoint	Integer value which when deducted from the current
		cool set point does not fall outside the SC limits
S	Current Mode Set Point	Two or three digit integer (see next two commands)
SP++	Increment current mode set point	Integer value which when added to the current mode
		set point does not fall outside the SH and SC limits
SP--	Decrement active setpoint	Integer value which when deducted from the current mode
		set point does not fall outside the SH and SC limits
MODE, M	Thermostat Mode of Operation	A /C /H /E/OFF (Auto/Cool/Heat /EMHT/Off)Humid/Dehum
		when operating as a humidity controller
FAN, F	Fan Switch Setting	A /ON (Auto/On)
HVAC, H	Report HVAC Relay States	Read Only
Auxiliary Information Commands
EQUIPCONFIG	Reports the setting of the thermostat	Read Only
	configuration dip switches
BLTON	Turns on backlighting for 10 seconds.	No Value Required for this Command

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