This example uses the following libraries:

SafeProportionalValveControl library

• S_EndAttenuation (FB)

• S_PVGValveController (FB)

SafeSSeriesHardware library

• S_DOControlAndDiagnostics (FB)

, or alternatively non-safe library

SensorsAndActuators library

• VoltageValveController (FB)

Depending on hardware, output group control needs to be activated before controlling outputs. See How to use S series and E series HW diagnostics for more information.

Currently, the S Series and E Series control unit's code template S_Outputs / Outputs programs provide interface for all output related variables defined in Epec MultiTool Creator. All output related function blocks are implemented by the application.

External voltage detection in output pins is provided by safety control unit's switch startup test. The startup test execution depends on used product:

• SC52 executes the startup test during FW startup

• SL8X/SM8X: startup test execution is triggered by application. See also How to use S Series and E Series HW diagnostics

After startup test the external voltage is monitored by application diagnostics.

Application level detection is required if external voltage needs to be monitored while operational (application functionality specific). External voltage can be monitored using DOS status of the output when PWM control is not active.

S_ADCToVoltageOrCurrent and S_VoltageToDI POUs are included in the code template generated by Multitool Creator.

When the following example is used with non-safety I/O, the I/O variables are generated in Inputs and Outputs programs instead of S_Inputs and S_Outputs.

In the following example, the output's PWM pin external voltage error is not monitored when control is inactive. See the How to control DO & DO ECO example for more information.

Safe PRG:

Init method:

IF NOT initDone THEN

S_MovementEndAttenuation.Init(

S_i_PosDirAttenuationLimit:=UINT#90 ,

S_i_NegDirAttenuationLimit:=UINT#90 ,

i_pEventCode:= ADR(eventCode_VoltageValve),

i_pEventCodePosDirAtt:=ADR(S_Inputs.o_EventCodeMain_PosEndAttenuation) ,

i_pEventCodeNegDirAtt:=ADR(S_Inputs.o_EventCode_NegEndAttenuation) );

S_VoltageValve.Init(

S_i_PosDirMaxPWMLevel:= UINT#750,

S_i_PosDirMinPWMLevel:= UINT#550,

S_i_CenterPositionPWMLevel:= UINT#500,

S_i_NegDirMinPWMLevel:= UINT#450,

S_i_NegDirMaxPWMLevel:= UINT#250,

S_i_PosDirAscendRampTime:= UINT#1000,

S_i_PosDirDescendRampTime:=UINT#1000 ,

S_i_NegDirAscendRampTime:= UINT#1000,

S_i_NegDirDescendRampTime:=UINT#1000 ,

S_i_PVGPullUpResistor:=UDINT#24000 ,

S_i_PVGPullDownResistor:= UDINT#24000,

S_i_PinPullUpResistor:= UDINT#0,

S_i_PinPullDownResistor:=UDINT#8000 ,

S_i_DiagnosticDelay:= UINT#100,

i_pEventCode:=ADR(eventCode_VoltageValve ),

i_pEventCodePVGError:=ADR(S_Inputs.o_EventCode_PVGErrorSignal) );

S_VoltageValveSupply.Init(S_i_OverCurrentLimit:=DINT#700 , S_i_BrokenCircuitCurrentLimit:=DINT#30 ,

   S_i_DiagnosticDelay:=UINT#30 , i_pEventCode:=ADR(eventCode_VoltageValve ) );

initDone:=TRUE;

END_IF

Code at non-safe PRG: