PLC-API Step response: ARW: VAR_INPUT VAR_INPUT fSetpointValue : FLOAT; fActualValue : FLOAT; eParameterRecord : E_CTRL_PARAMETER_RECORD; fManSyncValue : FLOAT; bSync : BOOL; eMode : E_CTRL_MODE; bHold : BOOL; END_VAR fSetpointValue : Set value of the controlled variable. fActualValue : Actual value of the controlled variable. eParameterRecord : Index of the active parameter record fManSyncValue : Input with which the PI element can be set. bSync : A rising edge at this input sets the PI element to the value fManSyncValue. eMode : Input that specifies the block's operating mode [ } 16] . bHold :
A TRUE at this input will hold the internal state (and therefore also the output) constant at its current value, independently of the system deviation. TS4100 74 Version: 1.1