Behavioral Model

General Information

The behavioral model describes the common behavior of all function blocks provided by this library.

By setting the input i_xEnable to TRUE, the function block starts the enabling process. The function block continues initialization and the output q_xActive is set to TRUE. Once the initialization is finished, the output q_xReady is set to TRUE.

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

Signal Diagram

Common Input

Input	Data type	Description
i_xEnable	BOOL	A rising edge FALSE -> TRUE activates and initializes the function block, a falling edge TRUE -> FALSE deactivates the function block. A deactivated function block does not execute actions and the outputs are set to the default value.

Common Outputs

Output	Data type	Description
q_xActive	BOOL	Indicates TRUE if the execution of the function block is active. As long as the output is TRUE, the function block must be executed cyclically.
q_xReady	BOOL	Indicates TRUE if the function block is ready and can be controlled through its inputs according to its functionality. After the function block has been enabled with a rising edge of i_xEnable, the output q_xReady is only set to TRUE if the function block can process instructions from the inputs. If invalid input values are detected during initialization, q_xReady remains FALSE. If the function block has detected an error, q_xReady is set to FALSE. If the function block is deactivated using i_xEnable, q_xReady immediately becomes FALSE.
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.