SigPlay

Function block - Generate a signal defined in a resource

Inputs

IN : BOOL    Triggering command
ID : DINT    ID of the signal resource, provided by SigID function
RST : BOOL   Reset command
TM : TIME    Minimum duration in between two changes of the output

Outputs

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.

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, you can use the SigScale function if you want to trigger the signal using a specific timer.

ST Language

(* MySig is a declared instance of SIGPLAY function block *)
MySig (II, ID, RST, TM);
Q := MySig.Q;
OUT := MySig.OUT;
ET := MySig.ET;

FBD Language

LD Language

IL Language

(* MySig is a declared instance of SIGPLAY function block *)
Op1: CAL MySig (II, ID, RST, TM)
     LD MySig.Q
     ST  Q
     LD MySig.OUT
     ST  OUT
     LD MySig.ET
     ST  ET