Beckhoff TwinCAT 2 TX1200, Manual

Page: 29 / 80

Programming
TX1200 29 Version: 1.1
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;
ActValue : WORD;
bMP_Sensor_Digi : BOOL;
iMP_Sensor_Analog : INT;
AirVolume_m3h : WORD;
iVnom_m3h : INT;
act_MaxVol : INT;
act_MinVol : INT;
bErr_ActHunt : BOOL;
bErr_MecTrv : BOOL;
bErr_MecOvld : BOOL;
rTemperature : LREAL;
bBusy: this bit is set for as long as the function block is active.
bError: the output becomes TRUE as soon as an error occurs. This error is described via the iErrorId
variable.
iErrorId: this output outputs an error code in the event of an error (see MP_Error [ } 70] ). bError goes TRUE
at the same time.
ActValue: contains the current position of the actuator (0...100 %).
bMP_Sensor_Digi: if an analog sensor is connected, its value is indicated through this variable. iSensorTyp
must be "1".
iMP_Sensor_Analog: if an analog sensor is connected, its value is indicated through this variable.
iSensorTyp must be in the range "2...6".
AirVolume_m3h: output of the volume flow rate in m³/h.
iVnom_m3h: nominal air volume flow in m³/h. This output is available from version 1.12.0. VAV is read and
must be > 0. If 0, then the calculation of AirVolume_m3h is not correct.
act_MaxVol: maximum set volume flow rate in %.
act_MinVol: minimum set volume flow rate in %.
bErr_ActHunt: actuator error, "Regulating oscillation"; the actuator is swinging backwards and forwards.
bErr_MecTrv: actuator error, "Positioning angle exceeded"; the actuator has passed more than 10° beyond
the adaptation position.
bErr_MecOvld: actuator error, "Overload"; the set position could not be reached.
rTemperature: temperature in the channel in °C.