Beckhoff TwinCAT 2 TX1200, Руководство пользователя

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Programming
TX1200 27 Version: 1.1
bBusy is set for as long as the block is active. An error is indicated through bError , while the error number
can be read with iErrorId .
VAR_INPUT
MP_Address : USINT := 1;
bAddrAuto : BOOL;
bReadAddr : BOOL;
bAddrManual : BOOL;
MP_Serial_Number_IN : MP_Serial_Number;
TMOUT : TIME := t#30s;
strDataKL6771 : DataKL6771;
MP_Address: the MP address that is to be used for the addressing or for reading the serial number. Valid
values (1...8).
bAddrAuto: a positive edge starts the function block. The function block halts other MP-Bus communication,
and waits until the time set through TMOUT has elapsed for an MP-Bus slave has transmitted its serial
number, for instance in response to pressing a switch. The MP-Bus address that has been configured in the
MP_Address variable is then transmitted to the slave.
bReadAddr: a positive edge starts the function block. The function block reads the serial number of the MP-
Bus slave whose address is MP_Address .
bAddrManual: a positive edge starts the function block. The function block addresses the slave that has
serial number MP_Serial_Number_IN . The slave's addresses configured with MP_Address .
MP_Serial_Number_IN: serial number of the device (see MP_Serial_Number [
}
73] ).
TMOUT: time after which automatic addressing is canceled.
strDataKL6771: the data structure with which the KL6771 [
}
25] function block must be linked (see
DataKL6771 [ } 72] ).
VAR_OUTPUT
bBusy : BOOL;
bError : BOOL;
iErrorId : MP_Error;
MP_Serial_Number_OUT : MP_Serial_Number;
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.
MP_Serial_Number_OUT: The serial number of the slave that is addressed or interrogated (see
MP_Serial_Number [
}
73] ).