SF_EDM (FB)

FUNCTION_BLOCK SF_EDM

External device monitoring – The Function block controls a safety output and monitors controlled actuators, e.g. subsequent contactors.

Function block according to PLCopen, Technical Committee 5: Safety Software (Technical Specification), Part 1: Concepts and Function Blocks, Version 2.01 (2020-2)

InOut:

Scope	Name	Type	Initial	Comment
Input	Activate	BOOL	FALSE	Activation of the FB.
	S_OutControl	BOOL	FALSE	Control signal of the preceeding safety FBs.
	EDM1	BOOL	FALSE	Feedback signal of the first connected actuator.
	EDM2	BOOL	FALSE	Feedback signal of the second connected actuator.
	MonitoringTime	TIME	TIME#0ms	Maximum response time of the connected and monitored actuators.
	Reset	BOOL	FALSE	Manual reset of FB
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.
	S_EDM_Out	BOOL	FALSE	Controls the actuator. The result is monitored by the feed- back signal EDMx.
	SafetyDemand	BOOL	FALSE	Output indicating that the FB is active and the primary safety function is demanded (e.g. related to the safety functionality).
	ResetRequest	BOOL	FALSE	Output which can be used to signal the operator to press the reset functionality to continue.
	Error	BOOL	FALSE	Error flag
	DiagCode	WORD	0	Diagnostic register