01	m24 firmware
02	m24 bootloader
03	AHU_status

04	Supply_Air_Temperature_Calculated_Setpoint

05..10

11	Fresh_Air_Temperature_Measurement (NTC10)
12	Supply_Air_Temperature_Measurement (NTC10)
13	Return_Air_Temperature_Measurement (0..10V)
14	Return_Air_CO2_Measurement (0..10V)
15	Exhaust_Air_Temperature_Measurement (NTC10)
16	Heating_Coil_Return_Water_Temperature_Measurement (PT1000)

17	Fresh_Air_Damper_Position (open indication) (NO)
18	Exhaust_Air_Damper_Position (open indication) (NO)
19	Fresh_Air_Damper_Control
20	Exhaust_Air_Damper_Control

21	Supply_Fan_Status (run status / flow detection) (NO)
22	Return_Fan_Status (run status / flow detection) (NO)
23	Supply_Fan_Command
24	Return_Fan_Command
25	Supply_Fan_Speed_Control
26	Return_Fan_Speed_Control

27	Fresh_Air_Filter (dirty alarm) (NC)
28	Return_Air_Filter (dirty alarm) (NC)

29	HRU_Control
30	HRU_Efficiency
31 	HRU_Action		[OFF / HEAT / COOL]

32	Heating_Coil_Valve_Control
33	Cooling_Coil_Valve_Control
34	Cooling_Coil_Pump_Control

35	m24 Software version #

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36	EDITABLE VALUE == Heating_Coil_Valve_Manual_Control (%)								50		0..100
37	EDITABLE VALUE == Cooling_Coil_Valve_Manual_Control (%)								0		0..100
38	EDITABLE VALUE == Damper_Opening_Delay (also used for closing) (sec)				30		10..300
39	EDITABLE VALUE == Fan_Conflict_Delay (start AND stop delay) (sec)					60		10..300
40	EDITABLE VALUE == Return_Air_CO2_Setpoint (ppm)										700		200..1500
41	EDITABLE VALUE == Return_Air_Temperature_Setpoint (*10 C)							22.0	15.0..30.00
42	EDITABLE VALUE == Supply_Air_Temperature_Setpoint_Minimum (*10 C)					19.0	15.0..25.00
43	EDITABLE VALUE == Supply_Air_Temperature_Setpoint_Maximum (*10 C)					24.5	20.0..30.00  	MAX > MIN
44	EDITABLE VALUE == Supply_Air_Temperature_Setpoint_Deviation_Limit (*10 C)			5.0		1.0..15.0
45	EDITABLE VALUE == Heating_Coil_Return_Water_Temperature_Alarm_Limit (*10 C)		6.0		3.0..25.00
46	EDITABLE VALUE == Heating_Coil_Return_Water_Temperature_Safety_P_Band (*10 C)		5.0		3.0..25.00
47	EDITABLE VALUE == Fans_Minimum_Start_Speed (minimum speed) (%)						40		10..100
48	EDITABLE VALUE == Manual_Operation_Control (AUTO/MANUAL ON/MANUAL OFF)				0		0=AUTO, 1=MAN.ON, 2=MAN.OFF
49	EDITABLE VALUE == FireAlarm															0		0=OK, 1=ALARM
50	EDITABLE VALUE == Alarm_Reset														0		0=NO ALARM, 1=ALARM ACTIVE, 17=RESET_ALARM_REQUEST
===========================================================

AHU starts at time schedule start
Dampers open
Fans start at low speed
Once flow is detected, the return setpoint for CO2 has PID to set fan speed
Return setpoint for temperature sets supply setpoint for temperature (cascade)
Calculated supply temperature setpoint has PID to set:
	- cooling
	- HRU cooling
	- empty stage without any action
	- HRU heating
	- heating

===========================================================

AHU status:
	0	Stopped: Time schedule
	1	On: Time schedule

	5	Stopped: Supply Damper Open
	6	Stopped: Exhaust Damper Open
	7	Stopped: Supply Fan still running
	8	Stopped: Exhaust Fan still running

	10	Manual Off
	11	Manual On
	
	20	On: Opening dampers
	21	On: Fan startup
	
	101	Stopped: Supply Damper error
	102	Stopped: Exhaust Damper error
	103 Stopped: Supply fan error
	104	Stopped: Exhaust fan error
	105 Stopped: Heating coil return temperature too low
	106 Stopped: Supply temperature too much off setpoint
	
	110	Stopped: Fire alarm