SigPlay

 Function Block A function block groups an algorithm and a set of private data. It has inputs and outputs. - Generate a signal defined in a resource.

Inputs

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

Outputs

Output	Data Type	Range	Unit	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.

FBD Language Example

FFLD Language Example

IL Language Example

Op1: FFLD  IN
SigScale ID
ST      Q

ST Language Example

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

See Also

• SigID
• SigScale