I’m using TC3 Ramp function block FB_CTRL_RAMP_GENERATOR. The function block configure as below

stCTRL_RAMP_GENERATOR_PARAMS.tTaskCycleTime := T#10s;
stCTRL_RAMP_GENERATOR_PARAMS.tCtrlCycleTime := T#10s;
stCTRL_RAMP_GENERATOR_PARAMS.fVeloPos:= (fTargetTemp-fInitTemp)/(60.0*fRampTime); (* in units per second *)
stCTRL_RAMP_GENERATOR_PARAMS.fVeloNeg:= 0; (* in units per second *)



    bCTRL_RAMP_GENERATOR(bEnable    := True,
                                fStart  := fInitTemp,
                                fTarget := fTargetTemp,
                    stParams:= stCTRL_RAMP_GENERATOR_PARAMS,
                                fOut    => fRampOut,
                                bValueReached=> bValueReached,
                                bError  => bError,
                                eErrorId    => eErrorId);

The fStart set to 25 degree and the target set to 30 degree. When I start the program, the bValueReached become true although the target value not reached yet. What’s going wrong? Is it VeloPos and VeloNeg configure wrong?