Siemens SIMATIC ET 200S - Page 24

myFC_control : _ET200S_FC_control; // create instance of FB _ET200S_FC_control
myFC_control_In : Struct_FC_control_In; // input parameter of FB _ET200S_FC_control
myFC_control_Out : Struct_FC_control_Out; // output parameter of the FB _ET200S_FC_control
myRetValSetSafe : enumSetAndGetSafeValue; // return value from system function _setsafevalue
... // see example
END_VAR
(1
)
PROGRAM ExampleET200S_FC; // Program in BackgroundTask
END_INTERFACE
IMPLEMENTATION
PROGRAM ExampleET200S_FC
// Program in BackgroundTask
// call _getSafeValue -> Test I/O-variables after powerOn Reset
myRetValGetSafe := _getSafeValue (
variable := myPeriIn,
accessMode := DEFAULT_VALUE,
getValue := myTmpPeriIn
);
IF (myRetValGetSafe = OK) // powerOn ready
THEN
// CALL FB INSTANCE
myFC_control ( (2
)
periIn := myTmpPeriIn, // I/O peripheral input
execute := myFC_control_In.execute, // execute / start the data transfer
mode := myFC_control_In.mode, // select the mode
paraNumber := myFC_control_In.paraNumber, // parameter number to read or write
subIndex := myFC_control_In.subIndex, // index of the parameter
paraValueWr := myFC_control_In.paraValueWr, // value of the parameter to write
setpoint := myFC_control_In.setpoint, // set the setpoint
ctrlDword := myFC_control_In.ctrlDword // set the control word
);
(3
)
// get output parameter of the FB _ET200S_FC_control (4
)
Parameterization
4.2 Calling the function block
Supplement for the ET 200S frequency converter
24 Function Manual, 01/2015