Auto Refresh

When using a Fieldbus interface to connect to the PMC, this function block ensures all necessary function blocks are updated; it should be called once per cycle.

Fieldbus Interface

PMC_AutoRefresh

Inputs

Name	Data Type	Description
Enable	BOOL	Set enable to TRUE to execute the function block, FALSE to stop execution.
PM_Controller	PMControllerType	Data structure that specifies which PMC to connect to. There should be only 1 instance of this variable for each connected PMC.

Outputs

Name	Data Type	Description
Valid	BOOL	TRUE: output values are valid. FALSE: output values are invalid.

Conditions

Operating Conditions
Preconditions	None
Postconditions	Function blocks are updated

Description

When using a Fieldbus interface to connect to the PMC, this function block ensures all necessary function blocks are updated; it should be called once per cycle.

Some function blocks in the library require cyclic calls to be updated properly
Call the provided function block every cycle to ensure all necessary function blocks are updated
This function block returns immediately, so other function blocks can be called in the same cycle