HaModCtud (FB)

FUNCTION_BLOCK HaModCtud

Function block HaModCtud is a standard up and down counter with automatic data synchronization in a high availability system QV is TRUE, if counter is 0. QU is TRUE, if counter is PV Only internal variables and outputs are synchronized. Input variables and parameters are not synchronized. If needed, use HaModDataSync to achieve the same.

Note

It is not recommended to call utility blocks inside other function blocks in user application, this can impact the data synchronization between PLCs. For example, if HaModTon function block is used inside user’s function block, it will lead to data sync mismatch.

InOut:

Scope	Name	Type	Initial	Comment
Input	Cu	BOOL	FALSE	1:Count Up
	Cd	BOOL	FALSE	2:Count Down
	Reset	BOOL	FALSE	3:Reset Counter to Null
	Load	BOOL	FALSE	4:Load Start Value
	Pv	WORD	0	5:Start Value / Counter Limit
Output	Qu	BOOL	FALSE	1:Counter reached Limit
	Qd	BOOL	FALSE	2:Counter reached Null
	Cv	WORD	0	3:Current Counter Value