FB_TempCtrlMainBody_TcPfw()

This function block must be called in the application. It organizes internally the complete temperature control.

Syntax

VAR_INPUT
    ConfigEnable   : BOOL;
    tCycle         : LREAL;
    Looptest_Enable: BOOL;
    Callback_Enable: BOOL;
    Simu_Enable    : BOOL:=FALSE;
    Simu_DisCharge : BOOL:=FALSE;
END_VAR

Inputs

Name	Type	Description
ConfigEnable	BOOL	If TRUE, the configuration is valid.
tCycle	LREAL	Cycle time
Looptest_Enable	BOOL	A current measurement is performed.
Callback_Enable	BOOL	Checks once (by calling FB_TempCtrlCallback_TcPfw()) the type of the linked terminal and parameterizes it according to the specified sensor type.
Simu_Enable	BOOL	Used for internal simulation purposes.
Simu_DisCharge	LREAL	Used for internal simulation purposes.

Behavior of the function block:

With each call the function block checks the global variable bPfw_UseTempControl. If this variable is TRUE and ConfigEnable indicates a valid configuration, the function block becomes active:

In the first cycle the function block calls an internal function block of type FB_internal_tmpCtrlInitlinks_TcPfw() to initialize the structures used by the temperature control.
If Looptest_Enable is set, a current measurement is performed.
If Callback_Enable is set, a function block of type FB_TempCtrlCallback_TcPfw() is called. This function block checks the type of the linked terminal once and parameterizes it according to the specified sensor type.
The following activities are performed for each zone of the control:
If in aaaPfwTempMparamFromHmi the Signal Update is set, the entered values are limited to the permissible value ranges if required and taken over into the control. Update is deleted.
If in aaaPfwTempPparamFromHmi the Signal Update is set, the entered values are limited to the permissible value ranges if required and taken over into the control. Update is deleted.
If InUse is set to TRUE in aaaPfwTempToHmi, the following steps are performed:
- A FB_CTRL_TempController() function block from the TcTempCtrl.LIB library is called.
- In out_PfwTempCtrlOutput YPWMPos, YPWMNeg, YDigPos, YDigNeg and Yanalog are updated.
- Various signals (aaaTempFault_Reset, Autotune in aaaPfwTempMparamFromHmi etc.) control the resetting of fault conditions or activate autotuning.
- If a problem is reported by the controller function block or from the I/O interface, the corresponding events are activated.
- Various data in aaaPfwTempToHmi are updated.
If the actual temperature of at least one zone is below fAbsoluteLow in aaaPfwTempMparamFromHmi, aaaTempAlarm_AbsoluteLow is signaled.
If the actual temperature of at least one zone is above fAbsoluteHigh in aaaPfwTempPparamFromHmi, aaaTempAlarm_AbsoluteHigh is signaled.

	At the end of the cycle aaaTempFault_Reset is automatically deleted.

	If Callback_Enable is not set, no function block of type FB_TempCtrlCallback_TcPfw() is called. In this case, the application must ensure that the I/O electronics match the sensor type.