Y_YA_DateCompare

This function block will calculate the difference between two real time clock values and provide the difference as a real time clock value. The clock values may be obtained using the RealTimeClock function block.

Parameters:

*	Parameter	Data Type	Description	Default
VAR_INPUT
B	Enable	BOOL	The function block will continue to execute every scan while Enable is TRUE and there are no errors.	FALSE
V	Clock1	Yt_YA_RTC_Struct	The more recent real time clock value.	All zeros in structure
V	Clock2	Yt_YA_RTC_Struct	The older real time clock value.	All zeros in structure
VAR_OUTPUT
B	Valid	BOOL	The Valid output indicates that the function block is operating normally and the outputs of the function block are valid.
B	Error	BOOL	The Error output is set to TRUE if an error has occurred during the operation of the function block. The output is cleared when the Execute or Enable input becomes FALSE.
E	ErrorID	UINT	The ErrorID output provides the identifier of the error when there is an active error in the function block execution. The output is cleared when the Execute or Enable input becomes FALSE.
V	ClockDiff	Yt_YA_RTC_Struct	Outputs the time difference between Clock1 - Clock2.

Note:

Clock1 input will have to be a more recent time instant compared to the Clock2 time instant.

Error Description

See the Function Block ErrorID List