Beckhoff TwinCAT 2 TX1200, Manual

Page: 47 / 80

Programming
TX1200 47 Version: 1.1
6.2.14 MP_RoomSensor
This function block is used to read room sensors. For more information please visit www.belimo.ch .
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 .
VAR_INPUT
MP_Address : USINT := 1;
bStart : BOOL;
bReadDISensor : BOOL;
strDataKL6771 : DataKL6771;
TMpolling : TIME := t#10s;
MP_Address: MP-Bus address of the slave.
bStart: 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: if TRUE, the DI sensor is read and the result is available in bDigitalInput .
strDataKL6771: the data structure with which the KL6771 [
}
25] function block must be linked (see
DataKL6771 [ } 72] ).
TMpolling: the time for which the function block should address the actuator. Default 10 s, minimum time
1 s.
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;
bBusy: This bit is set for as long as the block is active.
bError: The output becomes TRUE as soon as an error occurs. The error is described via the variable
iErrorId .
iErrorId: The output issues an error code when an error occurs (see MP_ERROR [
}
70] ). Simultaneously
bError is TRUE.