# BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_MOD ## `BELIMO_EVXXX_RX_FW_4_2_0_MOD` (FB) `FUNCTION_BLOCK` BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_MOD ### Representation
### Guidelines - software creation The following function codes (FC) are supported: 3, 4 (additionally: 2, 4, 16) For write operations to 32-bit data points (2 consecutive Modbus registers), FC16 must be used. No further registers may then be written in this telegram. Format of 32-bit data points: Register+0 (LSW): H-byte L-byte Register+1 (MSW): H-byte L-byte FC 02 may only be used for register 105 (Malfunction and service information, start address = 1664). * For addressing, the address values must be used, not the register addresses. | | For unused registers, the value 65535 (dec.) is read / written. * The calibration of the temperature sensors must be performed in the device; however, no adjustment is possible via Modbus. * Modbus addresses 1 - 247 can be set directly in the integrated web server. * All writable register addresses > 100 are persistent and must not be written cyclically * The device firmware cannot currently (06.09.2024) be read from address 103. The value 0 is always read. #### Notes on the input `rRelSetp` (Relative setpoint - position/volumetric flow/power in % (0.0 - 100.0 %)) 1. The function ‘Volumetric flow depending on the signal `rRelSetp`’ is not linear!!! (See Belimo documentation) 2. The specification of an absolute volumetric flow setpoint can therefore be made as follows: 1. External PI controller (inverted, 0 - 100 percent): Actual value = `rAbsVolFlowUnit`, setpoint = desired absolute setpoint, control signal connect with input `rRelSetp` input. 2. Input `rRelSetp` assign constant 100.0, parameter `rMaxAbsVolFlowUnit` write with the desired absolute setpoint {% hint style="danger" %} Attention: The parameter `rMaxAbsVolFlowUnit` must not be written cyclically!!! {% endhint %} Measured values - adjustment: Class ??? InOut: | Scope | Name | Type | Initial | Comment | | ----------- | -------------------------- | ------------------------------------------------------------- | ---------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Input | `xEn` | `BOOL` | TRUE | Enable / disable communication (TRUE = enable) | | Input | `byUnitId` | `BYTE` | 1 | Address of the device (1 .. 247) | | Input | `xUpdateActual` | `BOOL` | FALSE |

Update of actual values (on every rising edge
)

| | Input | `xUpdateSetp` | `BOOL` | FALSE |

Update of setpoints (on every rising edge
)

| | Input | `xUpdateConfig` | `BOOL` | FALSE |

Update of the configuration (on every rising
edge) (write and read access)

| | Input | `xUpdateInfo` | `BOOL` | FALSE |

Update of the information (on every rising
edge)

| | Input | `xResError` | `BOOL` | FALSE |

Reinitialization of the outputs eErrorCodeCom or
xErrorCodeDev to the error-free state (on every
rising edge)

| | Input | `rRelSetp` | `REAL` | 0.0 |

Relative setpoint - position/volumetric flow/power in % (
0.0 - 100.0 %)

| | Input | `eCommand` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_COMMAND | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_COMMAND.None | Command for service functions (0 = None) | | Input | `eOverrideCon` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_OVERRIDE\_CONTROL | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_OVERRIDE\_CONTROL.None |

Forced override of the control signal -
position/volumetric flow/power (0 = None)

| | Input | `rSetpDeltaTTempKel` | `REAL` | 0.0 |

Setpoint - temperature difference (Delta-T manager) in
Kelvin (minimum value)

| | Input | `rSetpDeltaTAbsFlowUnit` | `REAL` | 0.0 |

Setpoint - volumetric flow in the selected unit (Delta-T -
Manager) (unit defined in address 147)

| | Inout | `ModbusClient` | `ModbusClientBase` | | Client of the device | | Output | `eSetpSourceFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SETPOINT\_SOURCE | |

Feedback - source for the setpoint -
position/volumetric flow/power (1 = Modbus)

| | Output | `eControlModeFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_CONTROL\_MODE | | Feedback - control mode (1 = volume flow) | | Output | `rRelSetpFb` | `REAL` | |

Feedback - relative setpoint -
position/volumetric flow/power in % (0.0 - 100.0 %)

| | Output | `rRelSetpAnalog` | `REAL` | |

Relative setpoint - position/volumetric flow/power in % (
0.0 - 100.0 %) from input 0 - 10V (address 118 = 0 =
analog)

| | Output | `rRelPos` | `REAL` | | Relative position in XXX.X % | | Output | `rAbsPos` | `REAL` | |

Absolute position in XXX degrees (rotation) or mm (linear
movement)

| | Output | `rRelVolFlow` | `REAL` | |

Relative volumetric flow in % (0.0 - 150.0 %) (relative to
‘Maximum volumetric flow limit - address 106)

| | Output | `rRelVolFlowLimitMin` | `REAL` | |

Limit value - minimum percentage volumetric flow (reference:
Vnom) (Control\_Mode = Flow Control or Power Control)

| | Output | `rRelVolFlowLimitMax` | `REAL` | |

Limit value - maximum percentage volumetric flow (reference:
Vnom) (Control\_Mode = Flow Control or Power Control)

| | Output | `rNomAbsVolFlowUnit` | `REAL` | |

Nominal air volume flow in the selected unit (addresses
112 and 113) (unit definition in address 147)

| | Output | `rSetpAbsVolFlowUnit` | `REAL` | |

Setpoint for the absolute volumetric flow in the selected
unit (unit defined in address 147)

| | Output | `rAbsVolFlowUnit` | `REAL` | |

Absolute volumetric flow in the selected unit (unit defined
in address 147)

| | Output | `eVolFlowUnitFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_VOLUME\_FLOW\_UNIT | |

Feedback - unit for the absolute volumetric flow (
unit defined in address 147)

| | Output | `rTemp1Deg` | `REAL` | | Current temperature at the cable sensor in degrees Celsius | | Output | `rTemp2Deg` | `REAL` | |

Current temperature at the sensor in the flow meter in degrees
Celsius

| | Output | `rDeltaTempKel` | `REAL` | | Current temperature difference in Kelvin | | Output | `rRelGlycolCon` | `REAL` | | Current glycol concentration in percent | | Output | `rRelPower` | `REAL` | |

Current power in percent (0.0 - 300.0 %) (
reference value: ‘Maximum Power Limit’ - address 165)

| | Output | `rRelMaxPowerLimitFb` | `REAL` | |

Feedback - relative maximum power in percent ((
reference value: Pnom)

| | Output | `rNomAbsPowerUnit` | `REAL` | |

Nominal power in the selected unit (addresses 163
and 164) (unit defined in address 148)

| | Output | `rAbsMaxPowerLimitUnitFb` | `REAL` | |

Feedback - absolute maximum power in the selected
unit (reference value: Pnom) (unit defined in
address 148)

| | Output | `rAbsPowerCoolUnit` | `REAL` | |

Current absolute cooling power in the selected unit (
unit defined in address 148)

| | Output | `rAbsPowerHeatUnit` | `REAL` | |

Current absolute heating power in the selected unit (
unit defined in address 148)

| | Output | `ePowerUnitFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_POWER\_UNIT | |

Feedback - unit of the powers (unit defined in
address 148) (Configuration\_0)

| | Output | `eDeltaTManagerStatus` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DELTA\_T\_MANAGER\_STATUS | | Status of the Delta-T manager (Configuration\_0) | | Output | `rSetpDeltaTTempKelFb` | `REAL` | |

Feedback - setpoint - temperature difference (Delta-T -
Manager) in Kelvin (minimum value)

| | Output | `rSetpDeltaTAbsFlowUnitFb` | `REAL` | |

Feedback - setpoint - volumetric flow in the selected
unit (Delta-T - Manager) (unit defined in
address 147)

| | Output | `rRelDeltaPres` | `REAL` | |

Relative differential pressure - water in % (0.0 - 100.0 %) (
relative to ‘Absolute differential water pressure setpoint in
selected unit’ - addresses 172 - 173)

| | Output | `rNomDeltaPresUnit` | `REAL` | |

Nominal differential pressure - water in the selected unit (
unit defined in address 151)

| | Output | `rSetpDeltaPresAbsUnitFb` | `REAL` | |

Feedback - setpoint - differential pressure - water in the
selected unit (unit defined in address 151)
(Configuration\_0)

| | Output | `rDeltaPresAbsUnit` | `REAL` | |

Differential pressure - water in the selected unit (
unit defined in address 151)

| | Output | `eDeltaPresUnitFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DIFFERENTIAL\_PRESSURE\_UNIT | |

Feedback - unit of the differential pressure (unit defined in
address 151) (Configuration\_0)

| | Output | `eDeltaPresState` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DIFFERENTIAL\_PRESSURE\_STATE | | Status of the differential pressure control | | Output | `dwTotalWaterVolume` | `DWORD` | |

Total water quantity in the selected unit (unit defined
in address 149)

| | Output | `eVolumeUnitFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_VOLUME\_UNIT | |

Feedback - unit of the total water quantity (unit defined
in address 149) (Configuration\_0)

| | Output | `dwTotalCoolingEnergy` | `DWORD` | |

Total cooling energy in the selected unit (unit defined
in address 150)

| | Output | `dwTotalHeatinggEnergy` | `DWORD` | |

Total heating energy in the selected unit (unit defined
in address 150)

| | Output | `eEnergyUnitFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_ENERGY\_UNIT | |

Feedback - unit of the total energy quantities (
unit defined in address 150) (Configuration\_0)

| | Output | `eOverrideConFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_OVERRIDE\_CONTROL | |

Current state - forced override of the control signal -
position/volumetric flow/power (0 = None)

| | Output | `rSensor1ValueUnit` | `REAL` | |

Current value of sensor 1 in the selected unit (
address 120: sensor type, address 121: passive sensor type)

| | Output | `eSensor1TypeFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SENSOR\_1\_TYPE | |

Feedback - sensor type (address 120: sensor type) (
Configuration\_0)

| | Output | `eSensor1TypePasFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SENSOR\_1\_PASSIVE\_TYPE | |

Feedback - sensor type - passive (address 121: sensor
type passive) (Configuration\_0)

| | Output | `rSensor1TempDeg` | `REAL` | | Current temperature at sensor 1 in degrees Celsius | | Output | `eCommandFb` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_COMMAND | |

Current state - command for service functions (0 = None
)

| | Output | `eDeviceType` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DEVICE\_TYPE | |

Current state - type of the device (0 = Device not
connected)

| | Output | `eBusTermin` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_BUS\_TERMINATION | | Status of the Modbus termination resistor (Active = Enabled) | | Output | `sSerialNum` | `STRING` | | Serial number of the device | | Output | `wFirmwareVer` | `WORD` | | Firmware version of the device | | Output | `eAO` | eManNum | eManNum.Auto |

Display - manual override on the device (actuator disconnected)
(0 = Automatic)

| | Output | `xSensorOffsetInDevice` | `BOOL` | |

Display whether the sensor adjustment must be performed in
the device (TRUE = adjustment required in the device, FALSE = adjustment in
the FB required)

| | Output | `xAlarm` | `BOOL` | FALSE | Collective fault (TRUE = fault) | | Output | `xAlarmCom` | `BOOL` | FALSE | Collective fault - communication (TRUE = fault) | | Output | `eErrorCodeCom` | ModbusErrorCode | | Error code - communication (0 = no error) | | Output | `stErrorCodeDev_1` | `STRING` | |

String 1 with the numbers of the active device errors (
error bits 0 - 15)

| | Output | `stErrorCodeDev_2` | `STRING` | |

String 2 with the numbers of the active device errors (
error bits 16 - 31)

| | Output | `xBusy` | `BOOL` | | Communication display (TRUE = communication) | | Input Const | `eDeltaTManagerLimitation` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DELTA\_T\_MANAGER\_LIMITATION | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DELTA\_T\_MANAGER\_LIMITATION.Disabled | Limitation of the Delta-T manager | | Input Const | `rSetpDeltaPresAbsUnit` | `REAL` | 200.0 |

Setpoint - differential pressure - water in the selected unit
(unit defined in address 151)

| | Input Const | `rAbsMaxPowerLimitUnit` | `REAL` | 30.0 |

Absolute maximum power in the selected unit (
reference value: Pnom) (unit defined in address 148
)

| | Input Const | `eDeltaPresUnit` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DIFFERENTIAL\_PRESSURE\_UNIT | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_DIFFERENTIAL\_PRESSURE\_UNIT.mbar |

Unit of the differential pressure (unit defined in
address 151)

| | Input Const | `eEnergyUnit` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_ENERGY\_UNIT | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_ENERGY\_UNIT.MWh |

Unit of the total energy quantities (unit defined in address
150)

| | Input Const | `eVolumeUnit` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_VOLUME\_UNIT | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_VOLUME\_UNIT.m3 |

Unit of the total water volume (unit definition in
address 149)

| | Input Const | `ePowerUnit` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_POWER\_UNIT | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_POWER\_UNIT.kW |

Unit of the powers (unit defined in address
148)

| | Input Const | `eVolFlowUnit` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_VOLUME\_FLOW\_UNIT | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_VOLUME\_FLOW\_UNIT.m3\_per\_hour |

Unit for the absolute air volume flow (unit definition in
address 147)

| | Input Const | `rMaxAbsVolFlowUnit` | `REAL` | 40.0 |

Maximum value for the absolute air volume flow in the selected
unit (0.25rNomAbsVolFlowUnit … 1.0rNomAbsVolFlowUnit
) (unit definition in address 147)

| | Input Const | `rMinAbsVolFlowUnit` | `REAL` | 20.0 |

Minimum value for the absolute air volume flow in the selected
unit (0 … rMaxAbsVolFlowUnit) (unit definition in
address 147)

| | Input Const | `eSensor_1_Passive_Type` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SENSOR\_1\_PASSIVE\_TYPE | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SENSOR\_1\_PASSIVE\_TYPE.None | Definition of the type of passive sensor 1 (0 = None) | | Input Const | `eSensor_1_Type` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SENSOR\_1\_TYPE | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SENSOR\_1\_TYPE.None | Definition of the type of sensor 1 (0 = None) | | Input Const | `eSetpSource` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SETPOINT\_SOURCE | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_SETPOINT\_SOURCE.Bus |

Source for the setpoint - position/volumetric flow/power (1
= Modbus)

| | Input Const | `eControlMode` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_CONTROL\_MODE | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_CONTROL\_MODE.Flow\_Control | Control mode (1 = air volume flow) | | Input Const | `tBusFailTimeout` | `TIME` | TIME#2m0s0ms | Time period for evaluating a communication error | | Input Const | `eBusFailAction` | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_BUS\_FAIL\_ACTION | BELIMO\_EVXXX\_RX\_FW\_4\_2\_0\_BUS\_FAIL\_ACTION.None |

Action when a communication error occurs (0 =
none)

| | Input Const | `tTimeUpdateInfo` | `TIME` | TIME#0ms |

Update interval for the processes influenced by the input
xUpdateInfo influenced

| | Input Const | `tTimeUpdateConfig` | `TIME` | TIME#0ms |

Update interval for the processes influenced by the input
xUpdateConfig influenced

| | Input Const | `tTimeUpdateSetp` | `TIME` | TIME#45s0ms |

Update interval for the processes influenced by the input
xUpdateSetp influenced

| | Input Const | `tTimeUpdateActual` | `TIME` | TIME#3s0ms |

Update interval for the processes influenced by the input
xUpdateActual influenced

|