Behavioral Model

General Information

The following explanation only refers to standard stations (for more information refer to Standard stations or for example to FB_ClampingStation, FB_DeclampingStation or FB_GroupingStation):

By setting the property xEnable to TRUE, the function block starts the enabling process. The function block continues initialization and the property xActive is set to TRUE. Once the initialization is finished and no error is active, the property xReady is set to TRUE.

If an error occurs, the property xError indicates TRUE and remains TRUE until the function block is disabled.

Signal Diagram

Common Outputs

The methods of the function block FB_CoreStation provide the following common outputs:

Output	Data type	Description
q_xError	BOOL	Indicates TRUE if an error has been detected. For details, refer to q_etResult and q_sResultMsg.
q_etResult	ET_Result	Provides diagnostic and status information as a numeric value. If q_xError = FALSE, q_etResult provides status information. If q_xError = TRUE, q_etResult provides diagnostic/error information.
q_sResultMsg	STRING [255]	Provides additional diagnostic and status information as a text message.

Common Properties

The standard stations provide the following common properties:

Name	Data type	Accessing	Description
etResult	ET_Result	Read	Provides diagnostic and status information as a numeric value. If xError = FALSE, etResult provides status information. If xError = TRUE, etResult provides diagnostic/error information.
sResultMsg	STRING [255]	Read	The event-triggered property sResultMsg provides additional diagnostic and status information as a text message.
xActive	BOOL	Read	Indicates TRUE if the function block is active.
xEnable	BOOL	Write	If xEnable is set to TRUE, the station is enabled (activated).
xError	BOOL	Read	Indicates TRUE if an error has been detected. For details, refer to etResult and sResultMsg.
xErrorQuit	BOOL	Write	When an error is detected, state machine is going to a WAITING state. If xErrorQuit is set to TRUE, you leave this WAITING state and reset the error variables.
xReady	BOOL	Read	Indicates TRUE if the function block is enabled and no error is active. Indicates FALSE if the function block is enabled and an error is active or if the function block is disabled.