BELIMO_P_22RTX_1U00X_2_FULL

BELIMO_P_22RTX_1U00X_2_FULL (FB)

FUNCTION_BLOCK BELIMO_P_22RTX_1U00X_2_FULL

Short description

Control of the device series P-22RT..-1U00..-2 from Belimo Typical application: room control unit in a zone\

Guidelines - Software creation

Supported Modbus - Function Codes: 2, 3, 4, 6 and 16. For addressing, use the address values, not the register addresses. Registers from 111 are persistent in the device and must not be written cyclically!!! Unused registers contain the value 65535 (unsigned) (FFFF - hex) or -1 (signed). Unused registers within the defined ranges may be read/written. In the configuration ‘eEcoBoostOnOffIconMode = BELIMO_P_22RTX_1U00X_2_FULL_ICON_MODE.OPERATION_MODE’ the ECO mode is switched to On/Comfort mode on the first rising edge at the input ‘xBoostIcon’. On the second rising edge the BOOST mode is then activated. When operated at the room control unit the switch from ECO to BOOST happens immediately. Workaround: Write address 30 with FC06 !!! with the desired value, do not write address 22 at the same time. Measured values - Calibration: Class 4\

Interfaces

Inputs

Outputs

Name	Data type	Value range	Initial value	Function
eOperationMode	BELIMO_P_22RTX_1U00X_2_OPERATION_MODE			Display of the current operating mode at the room control unit (register address 30)
xModeDev	BOOL			Operating mode of the zone control at the room control unit (FALSE = night mode, TRUE = day mode)
xButtonPresence	BOOL			Actuation of the presence button (pulse with duration ‘tTimeButtonPulse’) (RBG and/or VISU)
rSetpTempAbs	REAL			Current absolute setpoint temperature depending on the parameter ‘eTemperatureUnit’ (e.g. +23.5 degrees Celsius) (register address 34) (unit depends on register address 120)
rOffset	REAL			Current difference between ‘rSetpTempAbs’ and ‘rAdjCenterSetpTemp’ (range: +/- ‘rAdjOffsetSetpTemp’) in day mode (unit depends on register address 120)
rSetpTempRel	REAL			Current relative setpoint temperature depending on the parameter ‘eOffsetUnit’ (e.g. -2.0 Kelvin) (range: +/- ‘rAdjOffsetSetpTemp’) (register address 36) (unit depends on register address 122)
rTemp	REAL			Room temperature (unit depends on register address 120)
rRelHumidity	REAL			Relative room humidity in percent
rCO2	REAL			CO2 concentration (ppm)
eCO2Status	BELIMO_P_22RTX_1U00X_2_CO2_STATUS			Current status of the CO2 actual value monitoring
xSensorOffsetInDevice	BOOL			Indicator whether sensor calibration must be performed in the device (TRUE = calibration required in device, FALSE = calibration required in FB)
rDewPointTemp	REAL			Dew point temperature (unit depends on register address 120 in degrees Celsius or Fahrenheit)
eFanLevel	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL			Current fan level depending on the parameter ‘eFanLevelConfig’ (register address 22)
xDI1	BOOL			State of digital input 1 depending on the parameter ‘eDI1OutpMode’ (RAW: FALSE = open, TRUE = closed with +24VDC, PULSE: pulse with duration ‘tTimeDIPulse’ on each rising edge at input DI1)
xEnLocalAdjFb	BOOL			Indicator whether local operation is possible (TRUE = local operation possible) — feedback
eBusTermin	BELIMO_P_22RTX_1U00X_2_BUS_TERMINATION			State of the Modbus termination resistor (Active = Enabled)
sSerialNum	STRING			Device serial number
wFirmwareVer	WORD			Firmware version of the device
xAlarmCom	BOOL			General fault - communication ( TRUE = fault )
eErrorCodeCom	ModbusErrorCode			Error code - communication ( 0 = no error )
eErrorCodeDev	SPLUSS_ERROR_CODE_TYPE_2			Error code - device (0 = no error)
xBusy	BOOL			Communication indicator ( TRUE = communication )

Inputs and outputs

Name	Data type	Value range	Initial value	Function
ModbusClient	ModbusClientBase			Client of the device

General information about setpoints / parameters (addresses 110 - 149)

The following setpoints / parameters (addresses 110 - 149) are valid for the function block with the index ‘_FULL’.\

Setpoints / Parameters FULL

Name	Data type	Value range	Initial value	Address	Function
tTimeUpdateActual	TIME		T#3s		Update interval for operations influenced by the input 'xUpdateActual' ( 0 = no automatic update, > 0 cyclical update )
tTimeUpdateSetp	TIME		T#45s		Update interval for operations influenced by the input 'xUpdateSetp' ( 0 = no automatic update, > 0 cyclical update )
tTimeUpdateStates	TIME		T#500ms		Update interval for operations influenced by the input 'xUpdateStates' ( 0 = no automatic update, > 0 cyclical update )
tTimeUpdateInfo	TIME		T#0s		Update interval for processes influenced by the input ‘xUpdateInfo’ (0 = no automatic update, > 0 cyclic update)
eDI1OutpMode	BELIMO_P_22RTX_1U00X_2_DIGITAL_INPUT_OUTP_MODE		BELIMO_P_22RTX_1U00X_2_DIGITAL_INPUT_OUTP_MODE.RAW		Operating mode of the output ‘xDI1’ (RAW, PULSE)
tTimeDIPulse	TIME		T#1s		Duration of the pulse at output ‘xDI1’, if a rising edge is detected at the digital input ( ‘eDI1OutpMode’ = BELIMO_P_22RTX_1U00X_2_FULL_DIGITAL_INPUT_OUTP_MODE.PULSE )
eFanStageControlMode	BELIMO_P_22RTX_1U00X_2_FAN_STAGES_CONTROL_MODE		BELIMO_P_22RTX_1U00X_2_FAN_STAGES_CONTROL_MODE.AUTOMATIC_STAGES_CONTROL	31	Definition of the operating mode for the control of the fan stages
tTimeButtonPulse	TIME		T#1s		Duration of the pulse at the output ‘xButton Presence’

Additional setpoints / parameters FULL

Name	Data type	Value range	Initial value	Address	Function
rTempOffset	REAL	+/- 15.0 K	0.0	110	Offset of the room temperature (for calibration of the temperature sensor) in K
rHumidityOffset	REAL	+/- 20.0 %	0.0	111	Offset of the room humidity (for calibration of the humidity sensor) in percent
rCO2Offset	REAL	+/- 500 ppm	0.0	112	Offset of the CO2 sensor (for calibration of the CO2 sensor) in ppm
rCO2_LED_ThresholdGreenYellow	REAL	600.0 - 1249.0 ppm, integer values only	1000.0	115	Threshold for switching the LED color from green to yellow
rCO2_LED_ThresholdYellowRed	REAL	1250.0 - 2000.0 ppm, integer values only	1500.0	116	Threshold for switching the LED color from yellow to red
xCO2_LED_Enable	BOOL		TRUE	117	Enable/disable of the CO2 LED (TRUE = enabled)
eTemperatureUnit	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE		BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE.DEGREES_CELSIUS	120	Definition of the unit for temperature (affects: ‘rTemp’ (address 1), ‘rDewPointTemp’ (address 5) and ‘rSetpTemp’ (address 34))
eTemperatureUnitDisplay	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE_DISPLAY		BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE_DISPLAY.DEGREES_CELSIUS	121	Definition of the unit for the temperature display on the display (affects: Display)
eOffsetUnit	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE		BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE.DEGREES_CELSIUS	122	Definition of the unit for the relative set temperature (affects: ‘rSetpTempRel’ (address 36))
eColorScheme	BELIMO_P_22RTX_1U00X_2_COLOR_SCHEME		BELIMO_P_22RTX_1U00X_2_COLOR_SCHEME.WHITE_BACKGROUND	130	Definition of the display color scheme
eDsplIconsHeatCool	BELIMO_P_22RTX_1U00X_2_SYMBOL_VISIBILITY		BELIMO_P_22RTX_1U00X_2_SYMBOL_VISIBILITY.INVISIBLE	134	Display of the visibility of the icons for heating and cooling operation
eWarningIconFunct	BELIMO_P_22RTX_1U00X_2_WARNING_ICON_FUNCTION		BELIMO_P_22RTX_1U00X_2_WARNING_ICON_FUNCTION.DEVICE_ERROR_STATUS	135	Definition of the function of the 'Warning' icon
eWindowIconFunct	BELIMO_P_22RTX_1U00X_2_WINDOW_ICON_FUNCTION		BELIMO_P_22RTX_1U00X_2_WINDOW_ICON_FUNCTION.INPUT_xDsplIconWind	136	Definition of the function of the 'Window' icon
eEcoBoostOnOffIconMode	BELIMO_P_22RTX_1U00X_2_ICON_MODE		BELIMO_P_22RTX_1U00X_2_ICON_MODE.PRESENCE_BUTTON	139 - 141	Central definition of the functions of the 'Eco', 'Boost' and 'OnOff' icons
tBoostModeDuration	TIME		T#900s	142	Duration of the 'Boost' operating mode
eSetpTempMode	BELIMO_P_22RTX_1U00X_2_SETP_TEMP_MODE		BELIMO_P_22RTX_1U00X_2_SETP_TEMP_MODE.ABSOLUTE_SETPOINT	145	Definition of the operating mode of the setpoint display (absolute / relative)
rAdjOffsetSetpTempAbs	REAL	-5.0 … +5.0 Kelvin	3.0	147	Definition of the adjustment range around the absolute base setpoint (center value) (± 5.0 K) (automatic internal conversion to other temperature units in the RBG). Affects the adjustment ranges of the absolute and the relative setpoint
eFanLevelConfig	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL_CONFIG		BELIMO_P_22RTX_1U00X_2_FAN_LEVEL_CONFIG.SEVEN_STAGES	148	Definition of the number of fan stages
eFanControlMode	BELIMO_P_22RTX_1U00X_2_FAN_CONTROL_MODE		BELIMO_P_22RTX_1U00X_2_FAN_CONTROL_MODE.MANUAL_MODE_ONLY	1498	Definition of the operating mode of the fan control

Function description

General

This function block controls room control units of the device series P-22RT..-1U00..-2 from Belimo via Modbus communication. The configuration (addresses 110 - 149) is handled internally in the function block with the index ‘_FULL’.\

Operating modes - room control unit (address 30) — outputs ‘eOperationMode’ and ‘xModeDev’

Four operating modes are distinguished: 0: Off/Protection (‘xModeDev’ = FALSE) 1: On/Comfort (‘xModeDev’ = TRUE) 2: Eco Mode (‘xModeDev’ = TRUE) 3: Boost Mode (‘xModeDev’ = TRUE) Operating modes 2 and 3 can only be selected in addition to operating mode 1. Operating mode 3 is active for a limited time and requires the enabling of the highest fan stage for correct function. The operating modes are set automatically depending on the operating method (see below). \

Central definition of the functions of the icons / controls 'OnOff', 'Eco' and 'Boost' (operating methods)

A total of four operating methods are distinguished, which are set via addresses 139 - 141: (FULL: parameter ‘eEcoBoostOnOffIconMode’) \

Operating method INVISIBLE

Visibility	Operability	Function
Eco: NO	Eco: NO	Icons not visible and not operable
Boost: NO	Boost: NO	Icons not visible and not operable
OnOff: NO	OnOff: NO	Icons not visible and not operable

Operating method DISPLAY_MODE

Visibility	Operability	Function
Eco: YES	Eco: NO	Display of the Eco and OnOff modes
Boost: NO	Boost: NO	Display of the Eco and OnOff modes
OnOff: YES	OnOff: NO	Display of the Eco and OnOff modes

Operating method OPERATION_MODE

Visibility	Operability	Function
Eco: YES	Eco: YES	Switching of the functions at the RBG as well as by rising edges at the icon inputs
Boost: YES	Boost: YES	Switching of the functions at the RBG as well as by rising edges at the icon inputs
OnOff: YES	OnOff: YES	Switching of the functions at the RBG as well as by rising edges at the icon inputs

Operating method PRESENCE_BUTTON

Visibility	Operability	Function
Eco: NO	Eco: NO	Occupancy extension with external HVAC.Button1 FB
Boost: NO	Boost: NO	Occupancy extension with external HVAC.Button1 FB
OnOff: YES	OnOff: YES	Occupancy extension with external HVAC.Button1 FB

In DISPLAY mode the operating modes Eco Mode and On/Comfort are set by the inputs ‘xEcoIcon’ and ‘xMode’ (TRUE = On). If none of the inputs is active, Off/Protection is selected automatically. In OPERATION mode the operating modes ECO, Boost and OnOff are determined by the corresponding inputs (rising edges) and by the operation at the room control unit. In PRESENCE-BUTTON mode the operating modes Off/Protection and On/Comfort are determined by the input ‘xMode’ (rising edges: On/Comfort, falling edge: Off/Protection) and in parallel by the operation at the room control unit. At each change from night to day mode and vice versa triggered by the room control unit, an impulse of duration ‘tTimeButtonPulse’ is generated at the output ‘xButtonPresence’. Additionally, for every rising edge at the input ‘xVisuPresence’ an impulse of duration ‘tTimeButtonPulse’ is generated at the output ‘xButtonPresence’. \

Restrictions in PRESENCE-BUTTON mode

1. In the function block ‘HVAC.Button1’ the parameters ‘xEnClockButton’ and ‘xEnToggle’ must not be set to FALSE.\

2. In the function block ‘HVAC.Button1’ the parameters ‘xEnClockButton’ and ‘xEnToggle’ must not be changed ONLINE.\

\

Day mode / Night mode (output ‘xModeDev’)

The output ‘xModeDev’ shows the current state of day mode at the room control unit (TRUE = day mode).\

Room setpoint temperatures

The room setpoint temperatures are defined in different ways depending on the parameter ‘eSetpTempMode’ (address 145): \

1. Absolute setpoint (e.g. +23.5 degrees Celsius) (index ‘Abs’) (inputs ‘rSetpTempAbsNight’, ‘rSetpTempAbsBaseDay’) (output ‘rSetpTempAbs’)\

2. Relative setpoint (e.g. +1.0 Kelvin) (index ‘Rel’) (inputs ‘rSetpTempRelNight’, ‘rSetpTempRelBaseDay’) (output ‘rSetpTempRel’)\

Changes to the associated inputs are transferred immediately in the corresponding state, otherwise at the next transition to that state. Example: A change at the input ‘rSetpTempAbsNight’ is transferred and becomes effective immediately in night mode. Example: A change at the input ‘rSetpTempBaseDay’ is not effective in night mode, but only upon the next transition to day mode. Changes to the parameter ‘rAdjOffsetSetpTempAbs’ (address 147) are transferred immediately in the appropriate state, otherwise delayed. (FULL). Changes to the content of address 147 affect both the absolute and relative setpoint. The current values at the inputs ‘rSetpTempAbsNight’ and ‘rSetpTempAbsBaseDay’ must be specified depending on the parameter ‘eTemperatureUnit’ (address 120). The current setpoint is then available at the output ‘rSetpTempAbs’ in the chosen unit. The current values at the inputs ‘rSetpTempRelNight’ and ‘rSetpTempRelBaseDay’ must be specified depending on the parameter ‘eOffsetUnit’ (address 122). The current setpoint is then available at the output ‘rSetpTempRel’ in the chosen unit. Night mode - room setpoint When changing from day mode to night mode the state at the input ‘rSetpTempAbsNight’ is transferred to the room control unit and displayed there (‘eSetpTempMode’ = absolute setpoint). When changing from day mode to night mode the state at the input ‘rSetpTempRelNight’ is transferred to the room control unit and displayed there (‘eSetpTempMode’ = relative setpoint). Any change of the state at the input ‘rSetpTempXXXNight’ is transmitted to the room control unit during night mode. Day mode - room setpoint Case 1 - There is not yet a valid room setpoint in day mode When changing from night mode to day mode the state at the input ‘rSetpTempAbsBaseDay’ is transferred to the room control unit and displayed there. At the room control unit an adjustment within the symmetric range defined by address 147 is possible. The step size is fixed at 0.5 K and changes only in the sequence X.0 - X.5 - X.0, etc. Case 2 - There is already a valid room setpoint in day mode When changing from night mode to day mode the previously valid room setpoint is transferred to the room control unit and displayed there. At the room control unit an adjustment within the symmetric range defined by address 147 is possible. The step size is fixed at 0.5 K and changes only in the sequence X.0 - X.5 - X.0, etc.\

Output ‘xDI1’

At output ‘xDI1’ the state at input DI1 of the room control unit is available in different ways (parameter ‘xDI1OutpMode’). Operating modes RAW The output immediately adopts the state at input DI1 (FALSE: contact open, TRUE: contact closed with +24VDC) PULSE Each rising edge at input DI1 triggers a pulse of duration ‘tTimeDIPulse’ (default: 1s) at the corresponding output xDI1. \

Specification / display of the fan stage

The preselection of the number of fan stages is made via the parameter ‘eFanLevelConfig’ (address 148). In Boost Mode the maximum fan stage (independent of the input ‘eSetpFanLevel’) is forced. The fan stage is selected and transmitted via the input ‘eSetpFanLevel’ within the permissible limits. The current fan stage is output via the output ‘eFanLevel’ within the permissible limits. The display of the current fan stage and the adjustment options are additionally determined by the parameters ‘eFanStagesControlMode’ (address 31) ‘eFanControlMode’ (address 149), ‘eFanLevelConfig’ (address 148) and ‘xDsplFanStages’ (address 138).\

Evaluation of the current CO2 level using a multicolored LED

The evaluation of the current CO2 level is done by a multicolored LED (off / green / yellow / red) and the output ‘eCO2Status’. The threshold for the LED color transition from green to yellow is defined by the parameter ‘rCO2_LED_ThresholdwGreenYellow’ (address 115). The threshold for the LED color transition from yellow to red is defined by the parameter ‘rCO2_LED_ThresholdYellowRed’ (address 116). The evaluation and LED display can be defined by the parameter ‘xCO2_LED_Enable’ (address 117) (TRUE = display).\

Display of symbols / actual values

The display of the desired symbols on the room control unit's display is triggered by the TRUE state of the associated inputs. These inputs are identified with the index ‘Dspl’. Example: xDsplTemp = TRUE causes the current room temperature to be displayed.\

Display of faults

Faults are indicated at the collective output ‘xAlarm’ (= TRUE). It includes communication faults (time delay: gc_Parameters.gc_tOnDelayxAlarmCom, default = 60s) and device faults (direct). Here the collective error message, the collective warning message and excessively high CO2 level (LED = red) are output as device faults. At the output ‘eErrorCodeCom’ an explanatory text for the cause is provided in case of a communication error. It always shows the cause of the last communication error.

Codesys

InOut:

Scope	Name	Type	Initial	Comment
Input	xEn	BOOL	TRUE	Enable / disable communication ( TRUE = enabled )
Input	byUnitId	BYTE	0	Device address (1 .. 247) (via Belimo Assistant - App via NFC)
Input	xUpdateActual	BOOL	FALSE	Update of actual values (on every rising edge )
Input	xUpdateSetp	BOOL	FALSE	Update of setpoint values (on every rising edge )
Input	xUpdateConfig	BOOL	FALSE	Update of the configuration ( on every rising edge )
Input	xUpdateStates	BOOL	FALSE	Update of the states ( on every rising edge )
Input	xUpdateInfo	BOOL	FALSE	Update of the information ( on every rising edge )
Input	rSetpTempAbsNight	REAL	18.0	Absolute setpoint temperature - night mode (unit depending on ‘eTemperatureUnit’)
Input	rSetpTempAbsBaseDay	REAL	22.0	Absolute base setpoint temperature - day mode (unit depending on ‘eTemperatureUnit’)
Input	rSetpTempRelNight	REAL	0.0	Relative setpoint temperature - night mode (unit depending on ‘eTemperatureUnit’)
Input	rSetpTempRelBaseDay	REAL	0.0	Relative base setpoint temperature - day mode (unit depending on ‘eTemperatureUnit’)
Input	xMode	BOOL	FALSE	Display of the 'OnOff' icon ( ‘eEcoBoostOnOffIconMode’ = BELIMO_P_22RTX_1U00X_2_FULL_ICON_MODE.DISPLAY_MODE )
Input	xEcoIcon	BOOL	FALSE	Display of the 'Eco' icon ( ‘eEcoIconMode’ = BELIMO_P_22RTX_1U00X_2_FULL_ICON_MODE.DISPLAY_MODE )
Input	xBoostIcon	BOOL	FALSE	Operation of the 'Boost' icon ( ‘eBoostIconMode’ = BELIMO_P_22RTX_1U00X_2_FULL_ICON_MODE.OPERATION_MODE )
Input	eSetpFanLevel	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL.STAGE_0	(each rising edge toggles the Boost mode) Setpoint - current fan stage depending on the parameter ‘eFanLevelConfig’ Depending on the parameters ‘eFanStagesControlMode’ (register 31 - setpoints_0) and ‘eFanControlMode’ (register 149 - configuration_0) the following operating possibilities are available: Register 31 = Automatic // Register 149 = Hybrid: If stage 0 is selected at the RBG, the display of the current stage is deactivated and an automatic symbol is shown. If a stage greater than 0 is selected at the RBG, the display of the current stage is activated and the automatic symbol is hidden. Stage selection is possible at the RBG and via register 22. In all other configurations: The display of the current stage is active; it can be changed at the RBG and via register 22, the last change remains in effect.
Input	xDsplTemp	BOOL	TRUE	Display of the room temperature (TRUE = display)
Input	xDsplRelHumidity	BOOL	TRUE	Display of the relative room humidity (TRUE = display)
Input	xDsplCO2	BOOL	TRUE	Display of the CO2 concentration (TRUE = display)
Input	xDsplFanStages	BOOL	FALSE	Display of the fan controls (TRUE = display)
Input	eTempDsplMode	BELIMO_P_22RTX_1U00X_2_MODE_DISPLAY_TEMP	BELIMO_P_22RTX_1U00X_2_MODE_DISPLAY_TEMP.SETP_TEMPERATURE	Definition of the function of the central temperature display area
Input	eIconsHeatCool	BELIMO_P_22RTX_1U00X_2_MODE_HEAT_COOL	BELIMO_P_22RTX_1U00X_2_MODE_HEAT_COOL.NONE	Selection of heating or cooling operation
Input	xDsplIconWarn	BOOL	FALSE	Display of the 'Warning' symbol (TRUE = display)
Input	xDsplIconWind	BOOL	FALSE	Display of the 'Window' symbol (TRUE = display)
Input	xEnLocalAdj	BOOL	TRUE	Definition whether local operation is possible (TRUE = enabled)
Input	xVisuPresence	BOOL	FALSE	Actuation of the presence button in the visualization (eEcoBoostOnOffIconMode = BELIMO_P_22RTX_1U00X_2_ICON_MODE.PRESENCE_BUTTON)
Input	xResError	BOOL	FALSE	Reinitialization of the output 'eErrorCodeCom' (on each rising edge)
Inout	ModbusClient	ModbusClientBase		Client of the device
Output	eOperationMode	BELIMO_P_22RTX_1U00X_2_OPERATION_MODE		Current operating mode 0 = OFF_PROTECTION: Night mode 1 = ON_COMFORT: Day mode 2 = ECO_MODE: Day mode — Eco mode 3 = BOOST_MODE: Day mode — Boost mode
Output	xModeDev	BOOL		Operating mode of the zone control from the device (FALSE = night mode, TRUE = day mode)
Output	xButtonPresence	BOOL		Actuation of the presence button (pulse with duration ‘tTimeButtonPulse’) (RBG and/or VISU)
Output	rSetpTempAbs	REAL		Current absolute setpoint temperature depending on the parameter ‘eTemperatureUnit’ (e.g. +23.5 degrees Celsius) ( register 34)
Output	rOffset	REAL		Current difference between ‘rSetpTempAbs’ and ‘rAdjCenterSetpTemp’ depending on the parameter ‘eTemperatureUnit’ (range: +/- ‘rAdjOffsetSetpTemp’) in day mode
Output	rSetpTempRel	REAL		Current relative setpoint temperature depending on the parameter ‘eOffsetUnit’ (e.g. -2.0 Kelvin) (range: +/- ‘rAdjOffsetSetpTemp’) (register 36)
Output	rTemp	REAL		Current room temperature depending on the parameter ‘eUnitTemperature’
Output	rRelHumidity	REAL		Relative room humidity in percent
Output	rCO2	REAL		Current CO2 concentration in ppm
Output	eCO2Status	BELIMO_P_22RTX_1U00X_2_CO2_STATUS		Current status of the CO2 actual value monitoring
Output	xSensorOffsetInDevice	BOOL		Indicator whether the calibration of the sensors must be performed in the device (TRUE = calibration in device required, FALSE = calibration in FB required)
Output	rDewPointTemp	REAL		Dew point temperature in degrees Celsius or Fahrenheit
Output	eFanLevel	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL		Current fan level depending on the parameter ‘eFanLevelConfig’
Output	xDI1	BOOL		State of digital input 1 depending on the parameter ‘eDI1OutpMode’:
Output	xEnLocalAdjFb	BOOL		Indicator whether local operation is possible (TRUE = local operation possible) — feedback
Output	eBusTermin	BELIMO_P_22RTX_1U00X_2_BUS_TERMINATION		State of the Modbus termination resistor (Active = Enabled)
Output	sSerialNum	STRING		Device serial number
Output	wFirmwareVer	WORD		Firmware version of the device
Output	xAlarm	BOOL	FALSE	General fault ( TRUE = fault )
Output	xAlarmCom	BOOL	FALSE	General fault - communication ( TRUE = fault )
Output	eErrorCodeCom	ModbusErrorCode		Error code - communication ( 0 = no error )
Output	xBusy	BOOL		Communication indicator ( TRUE = communication )
Input Const	xEcoIconPresenceButtonMode	BOOL	FALSE	Enable/disable of the display/operation of the ECO icon/button in the operating method ‘PRESENCE_BUTTON’
Input Const	tTimeButtonPulse	TIME	TIME#1s0ms	Duration of the pulse at the output ‘xButton Presence’
Input Const	eFanStageControlMode	BELIMO_P_22RTX_1U00X_2_FAN_STAGES_CONTROL_MODE	BELIMO_P_22RTX_1U00X_2_FAN_STAGES_CONTROL_MODE.AUTOMATIC_STAGES_CONTROL	Definition of the operating mode for the control of the fan stages
Input Const	eFanControlMode	BELIMO_P_22RTX_1U00X_2_FAN_CONTROL_MODE	BELIMO_P_22RTX_1U00X_2_FAN_CONTROL_MODE.MANUAL_MODE_ONLY	Definition of the operating mode of the fan control
Input Const	eFanLevelConfig	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL_CONFIG	BELIMO_P_22RTX_1U00X_2_FAN_LEVEL_CONFIG.SEVEN_STAGES	Definition of the number of fan stages
Input Const	rAdjOffsetSetpTempAbs	REAL	3.0	Definition of the adjustment range around the absolute base setpoint (center value) (± 5.0 K) (automatic internal conversion to other temperature units in the RBG)
Input Const	eSetpTempMode	BELIMO_P_22RTX_1U00X_2_SETP_TEMP_MODE	BELIMO_P_22RTX_1U00X_2_SETP_TEMP_MODE.ABSOLUTE_SETPOINT	Affects the adjustment ranges of the absolute and the relative setpoint Definition of the operating mode of the setpoint display
Input Const	tBoostModeDuration	TIME	TIME#15m0s0ms	Duration of the 'Boost' operating mode
Input Const	eEcoBoostOnOffIconMode	BELIMO_P_22RTX_1U00X_2_ICON_MODE	BELIMO_P_22RTX_1U00X_2_ICON_MODE.PRESENCE_BUTTON	Central definition of the functions of the 'Eco', 'Boost' and 'OnOff' icons INVISIBLE (icons not visible and not operable) > Visibility Operability at the RBG Eco: no no Boost: no no OnOff: no no DISPLAY_MODE (display of the Eco and OnOff modes) > Visibility Operability at the RBG Eco: yes no Boost: no no OnOff: yes no OPERATION_MODE (switching of the functions at the RBG as well as by rising edges at the icon inputs) > Visibility Operability at the RBG Eco: yes yes Boost: yes yes OnOff: yes yes PRESENCE_BUTTON (occupancy extension with external HVAC.Button1 FB) > Visibility Operability at the RBG Eco: no no Boost: no no OnOff: yes yes
Input Const	eWindowIconFunct	BELIMO_P_22RTX_1U00X_2_WINDOW_ICON_FUNCTION	BELIMO_P_22RTX_1U00X_2_WINDOW_ICON_FUNCTION.INPUT_xDsplIconWind	Definition of the function of the 'Window' icon
Input Const	eWarningIconFunct	BELIMO_P_22RTX_1U00X_2_WARNING_ICON_FUNCTION	BELIMO_P_22RTX_1U00X_2_WARNING_ICON_FUNCTION.DEVICE_ERROR_STATUS	Definition of the function of the 'Warning' icon
Input Const	eDsplIconsHeatCool	BELIMO_P_22RTX_1U00X_2_SYMBOL_VISIBILITY	BELIMO_P_22RTX_1U00X_2_SYMBOL_VISIBILITY.INVISIBLE	Display of the visibility of the icons for heating and cooling operation
Input Const	eColorScheme	BELIMO_P_22RTX_1U00X_2_COLOR_SCHEME	BELIMO_P_22RTX_1U00X_2_COLOR_SCHEME.WHITE_BACKGROUND	Definition of the display color scheme
Input Const	eOffsetUnit	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE.DEGREES_CELSIUS	Setting the unit for the offset temperature ( Affects: ‘rSetpTempRel’ ( Register 36 ) )
Input Const	eTemperatureUnitDisplay	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE_DISPLAY	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE_DISPLAY.DEGREES_CELSIUS	Setting the unit for the temperature display on the screen ( Affects: Display )
Input Const	eTemperatureUnit	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE	BELIMO_P_22RTX_1U00X_2_UNIT_TEMPERATURE.DEGREES_CELSIUS	Setting the unit for temperature ( Affects: ‘rTemp’ ( Register 1 ), ‘rDewPointTemp’ ( Register 5 ) and ‘rSetpTemp’ ( Register 34 ) )
Input Const	xCO2_LED_Enable	BOOL	TRUE	Enable/disable of the CO2 LED (TRUE = enabled)
Input Const	rCO2_LED_ThresholdYellowRed	REAL	1500.0	Threshold for changing the LED color from yellow to red ( 1250.0 - 2000.0 ppm, integer values only )
Input Const	rCO2_LED_ThresholdGreenYellow	REAL	1000.0	Threshold for changing the LED color from green to yellow ( 600.0 - 1249.0 ppm, integer values only )
Input Const	rCO2Offset	REAL	0.0	Offset of the CO2 sensor ( for calibration of the CO2 sensor ) in ppm ( +/- 500 ppm )
Input Const	rHumidityOffset	REAL	0.0	Offset of the room humidity ( for calibration of the humidity sensor ) in percent ( +/- 20.0 % )
Input Const	rTempOffset	REAL	0.0	Offset of the room temperature ( for calibration of the temperature sensor ) in K ( +/- 15.0 K )
Input Const	tTimeDIPulse	TIME	TIME#1s0ms	Duration of the pulse on output ‘xDI1’, if a rising edge is detected on the digital input ( ‘eDI1OutpMode’ = BELIMO_P_22RTX_1U00X_2_FULL_DIGITAL_INPUT_OUTP_MODE.PULSE )
Input Const	eDI1OutpMode	BELIMO_P_22RTX_1U00X_2_DIGITAL_INPUT_OUTP_MODE	BELIMO_P_22RTX_1U00X_2_DIGITAL_INPUT_OUTP_MODE.RAW	Operating mode of the output ‘xDI1’ (RAW, PULSE)
Input Const	tTimeUpdateInfo	TIME	TIME#0ms	Update interval for the processes influenced by the input ‘xUpdateInfo’
Input Const	tTimeUpdateStates	TIME	TIME#500ms	Update interval for the processes influenced by the input ‘xUpdateStates’
Input Const	tTimeUpdateSetp	TIME	TIME#45s0ms	Update interval for operations influenced by the input 'xUpdateSetp'
Input Const	tTimeUpdateActual	TIME	TIME#3s0ms	Update interval for operations influenced by the input 'xUpdateActual'