PLC-API VAR_OUTPUT VAR_OUTPUT fOut : FLOAT; eState : E_CTRL_STATE; eErrorId : E_CTRL_ERRORCODES; bError : BOOL; END_VAR fOut : Output of the signal generator. eState : State of the function block. eErrorId : Supplies the error number [ } 16] when the bError output is set. bError : Becomes TRUE, as soon as an error occurs. VAR_IN_OUT VAR_IN_OUT stParams : ST_CTRL_SIGNAL_GENERATOR_PARAMS; END_VAR stParams : Parameter structure of the function block. This consists of the following elements: TYPE ST_CTRL_I_PARAMS : STRUCT tCtrlCycleTime : TIME := T#0ms; (* controller cycle time *) tTaskCycleTime : TIME := T#0ms; (* task cycle time *) eSignalType : E_CTRL_SIGNAL_TYPE; tCylceDuration :
TIME; fAmplitude : FLOAT; fOffset : FLOAT := 0.0; tStart : TIME := T#0s; END_STRUCT END_TYPE tCtrlCycleTime : Cycle time with which the control loop is processed. This must be greater than or equal to the TaskCycleTime. The function block uses this input value to calculate internally whether the state and the output values have to be updated in the current cycle. tTaskCycleTime : Cycle time with which the function block is called. If the function block is called in every cycle this corresponds to the task cycle time of the calling task. eSignalType : Selection of the signal form. See E_CTRL_SIGNAL_TYPE below. TYPE E_CTRL_SIGNAL_TYPE :
( eCTRL_TRIANGLE := 0, eCTRL_SINUS := 1, eCTRL_SAWTOOTH := 2 ); END_TYPE tCycleDuration : Period of the generated signal curve. fAmplitude : Amplitude of the generated signal curve. fOffset : Offset to be added to the signal curve. tStart : Point in time within a period at which the signal curve starts when switching to eCTRL_MODE_ACTIVE. Requirements TS4100 157 Version: 1.1 Development Environment Target System PLC libraries to include TwinCAT v2.8 PC (i386) TcControllerToolbox.lib TwinCAT v2.9 from Build 947 BC [} 10] TcControllerToolbox.lb6 TwinCAT v2.9 from Build 956 BX [} 10] TcControllerToolbox.lbx