Beckhoff TwinCAT 2 TX1200, Руководство пользователя

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Programming
TX1200 60 Version: 1.1
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;
strDataKL6771 : DataKL6771;
TMpolling : TIME := t#10s;
rSetpoint : LREAL;
nOverrideControl : E_MP_VRU_OverrideControl;
nCommand : E_MP_VRU_Command;
nDataRead : BYTE;
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 .
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.
rSetpoint: value in % (0...100 %).
nOverrideControl: override the setpoint [
}
68] .
nCommand: command [
}
68] for service and test functions of the actuator.
nDataRead: 0xFF - read all data; bit 0 - read relative position; bit 1 - read absolute position; bit 2 - read
relative volume flow rate; bit 3 - read absolute volume flow rate; bit 4 - read value sensor 1; bit 5 - read
analog setpoint; bit 6 - read relative differential pressure; bit 7 - read absolute differential pressure
VAR_OUTPUT
bBusy : BOOL;
bError : BOOL;
iErrorId : MP_Error;
strMP_Serial_Number : MP_Serial_Number;
st_MP_VRU_ServiceInfo : St_MP_VRU_ServiceInfo;
rSetpoint_Read : LREAL;
nOverrideControl_Read : E_MP_VRU_OverrideControl;
nCommand_Read : E_MP_VRU_Command;
rRelativePosition : LREAL;
rAbsolutePosition : LREAL;
rRelativeVolumeticFlow : LREAL;
rAbslouteVolumeticFlow : LREAL;
rSensor1Value : LREAL;
rSetpointAnalog : LREAL;
rRelativeDeltaPressure : LREAL;
rAbsoluteDeltaPressure : LREAL;
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.
strMP_Serial_Number: Structure [
}
73] for serial number.
st_MP_VRU_ServiceInfo: Malfunction and Service Information [
}
74] .
rSetpoint_Read: Setpoint.