SigPlay

Function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. block - Generate a signal defined in a resource.

Inputs

Input	Data Type	Description
IN	BOOL	Triggering command.
ID	DINT	ID of the signal resource, provided by the SigID function.
RST	BOOL	Reset command.
TM	TIME	Minimum duration between two changes of the output.

Outputs

Output	Data Type	Description
Q	BOOL	TRUE when the signal is finished.
OUT	REAL	Generated signal.
ET	TIME	Elapsed time.

Remarks

• The ID argument is the identifier of the signal resource.
  • Use the SigID function to get this value.
• The IN argument is used as a Play / Pause command to play the signal.
  • The signal is not reset to the beginning when IN becomes FALSE.
  • Instead, use the RST input that resets the signal and forces the OUT output to 0 (zero).
• The TM input specifies the minimum amount of time in between two changes of the output signal.
  • This parameter is ignored if less than the cycle scan time.
• This function block includes its own timer.
  • Alternatively, use the SigScale function if you want to trigger the signal using a specific timer.

ST Language

MySig (II, ID, RST, TM);
Q := MySig.Q;
OUT := MySig.OUT;
ET := MySig.ET;

FBD Language

FFLD Language

IL Language

Op1: FFLD  IN
SigScale ID
ST      Q

See Also

• SigID
• SigScale