Beckhoff TwinCAT 2 TX1200, Manual

Page: 63 / 80

Programming
TX1200 63 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;
ActValue : WORD;
iErrorID : MP_Error;
bError : BOOL;
bBusy: this bit is set for as long as the function block is active.
ActValue: contains the current position of the actuator (0...100 %).
iErrorID: this output outputs an error code in the event of an error (see MP_Error [ } 70] ). bError goes TRUE
at the same time.
bError: the output becomes TRUE as soon as an error occurs. This error is described via the iErrorID
variable.
6.3 Functions
POUs Description
NI1000_LuS_TO_INT [ } 63]
This function calculates a temperature from the value of an NI1000
L&S resistor.
NI1000_TO_INT [
}
64]
This function calculates a temperature from the value of an NI1000
resistor.
NTC_TO_INT [
}
64]
This function calculates a temperature from the value of an NTC
resistor.
PT1000_TO_INT [
}
64]
This function calculates a temperature from the value of an PT1000
resistor.
6.3.1 NI1000_LuS_TO_INT : INT
This function calculates a temperature from the value of an NI1000 L&S resistor.
Connect this function to iMP_Sensor_Analog . As output, you receive an INT variable that represents the
temperature with a resolution of 0.01 °C (20.5 °C, for example, is represented as 2050).
The lowest valid value of 872 ohms corresponds to -30 °C. If the value is smaller than this, 16#7FFD is
output.
The largest valid value of 1586 ohms corresponds to 115 °C. If the value is greater than this, 16#7FFE is
output.
VAR_INPUT
MP_Value : WORD;
MP_Value: input for an ohmic NI1000 L&S sensor.
NI1000_LuS_TO_INT: temperature in 0.01 °C.