SF_TwoHandControlTypeIII (FB)

FUNCTION_BLOCK SF_TwoHandControlTypeIII EXTENDS SF_TwoHandControlTypeII

This function block provides the two-hand control functionality for type III A, B and C.

The difference is in the input processing of the switches (single contact, 2 switches per input (equivalent), 2 switches per input (antivalent). (see EN 574, Section 4 Type III. Fixed specified time difference is 500 ms).

InOut:

Scope	Name	Type	Initial	Comment	Inherited from
Input	Activate	BOOL	FALSE	Activation of the FB.	SF_TwoHandControlTypeII
	S_Button1	BOOL	FALSE	Input of button 1, FALSE: Button 1 released, TRUE: Button 1 actuated.	SF_TwoHandControlTypeII
	S_Button2	BOOL	FALSE	Input of button 2, FALSE: Button 2 released, TRUE: Button 2 actuated.	SF_TwoHandControlTypeII
Output	Ready	BOOL	FALSE	Activation of the FB. TRUE indicates that the FB is activated and the outputs results are valid, FALSE the FB is not active and the program is not executed.	SF_TwoHandControlTypeII
	S_TwoHandOut	BOOL	FALSE	Safety related output signal. FALSE: No correct two hand operation. TRUE: S_Button1 and S_Button2 inputs are TRUE and no error occurred. Correct two hand operation.	SF_TwoHandControlTypeII
	SafetyDemand	BOOL	FALSE	Output indicating that the FB is active and the primary safety function is demanded (e.g. related to the safety functionality).	SF_TwoHandControlTypeII
	Error	BOOL	FALSE	Error flag	SF_TwoHandControlTypeII
	DiagCode	WORD	0	Diagnostic register	SF_TwoHandControlTypeII