MP_RoomSensor

This function block is used to read out room sensors of types 22Rxx-19-1 that were produced before May 2022 (as of May 2022, see MP_OperatingUnit).
For more information, see www.belimo.com.

MP_Address is used to specify the MP-Bus device with which the function block is to communicate. bStart activates communication with the MP-Bus device. bBusy indicates that the function block is active. If bStart remains TRUE, the device is addressed cyclically with a period specified by the time in TMPolling. The time should be set longer than 1 s. bError is used to indicate an error in communication with the actuator. The type of the error can be read with iErrorId.

Inputs

VAR_INPUT
  MP_Address       : USINT := 1;
  bStart           : BOOL;
  bReadDISensor    : BOOL; 
  strDataKL6771    : DataKL6771;
  TMpolling        : TIME := t#10s;
END_VAR

Name	Type	Description
MP_Address	USINT	MP-Bus address of the slave.
bStart	BOOL	A positive edge starts the function block. If this remains continuously TRUE, the function block will be activated cyclically with a period specified by the time in TMPolling.
bReadDISensor	BOOL	If TRUE, the DI sensor is read and the result is available in bDigitalInput.
strDataKL6771	DataKL6771	The data structure with which the KL6771() function block must be linked.
TMpolling	TIME	The time for which the function block should address the actuator. Default 10 s, minimum time 1 s.

Outputs

VAR_OUTPUT
  bBusy                : BOOL;
  bError               : BOOL;
  iErrorId             : MP_Error;
  rSensTemp            : LREAL; 
  rDewPointTemp        : LREAL; 
  rHumid               : LREAL; 
  uiCo2                : UINT; 
  stUnit               : STRING;
  bDigitalInput        : BOOL; 
  bSensorError         : BOOL; 
  st_SensorType        : STRING;
END_VAR

Name	Type	Description
bBusy	BOOL	This bit is set for as long as the function block is active.
bError	BOOL	This output goes TRUE as soon as an error occurs. This error is described via the iErrorId variable.
iErrorId	MP_ERROR	This output outputs an error code in the event of an error. bError goes TRUE at the same time.
rSensTemp	LREAL	Sensor temperature in °C or °F.
rDewPointTemp	LREAL	Temperature of the calculated dew point in °C or °F.
rHumid	LREAL	Humidity in percent (% 0.01).
uiCo2.	UINT	CO2 content in ppm.
stUnit	STRING	C = °C or F = °F, ? = not read.
bDigitalInput	BOOL	DI sensor read if bReadDISensor is TRUE.
bSensorError	BOOL	One of the sensors has an error.
st_SensorType	STRING	Sensor type. '?' = not read / type / 'unknown' = number unknown.

Requirements

Development environment	required TC3 PLC library
TwinCAT from v3.1.4024.10	Tc2_MPBus from 3.4.12.0