Adding a TON with TwinCAT

[avalancheroy33]

I just took over aproject and need to add a timer using twincat software, but do not have much experience with it. I know how to map in inputs and outputs, but dont know how to add a timer. need to get equipment back online to night hopefully -- any help is much appreciated.

[L D[AR2,P#0.0]]

In the sample project supplied with TwinCat (TwinCat\Samples\FirstSteps) there are examples of the use of TON

[Andreik]

I was able to simulate and run TON using Structured Text. I have activated "T.IN", however deactivating "T.IN", I noticed that "T.Q" remains activated. When I set "T.Q:=FALSE", the program shows error message. How can I turn this "T.Q" OFF?

Example program:

dev_down := NOT dev_up;
IF start THEN
t1(IN:=TRUE , PT:=t#1s , Q=>, ET=> );
IF t1.Q THEN
dev_up:=TRUE;
t1.IN:=FALSE;
END_IF
END_IF

Thank you very much,
Andrei K.

Originally Posted by L D[AR2,P#0.0]

In the sample project supplied with TwinCat (TwinCat\Samples\FirstSteps) there are examples of the use of TON

[TurpoUrpo]

You must always make the call of ton. Now if start is not true you wont call the ton.

dev_down := NOT dev_up;
IF start THEN
      t1(IN:=TRUE , PT:=t#1s , Q=>, ET=> ); //this one will execute the ton, if start is not true, it wont execute, also when call is made u assign true to in so it will always be true when call is made.
  IF t1.Q THEN
    dev_up:=TRUE;
    t1.IN:=FALSE;
  END_IF
END_IF

[Andreik]

Good day,

Thank you very much. I was able to put up a decent ST program just today and this will be the beginning of more complex programs to make. Here is my improved simple "TON" program:
dev_down := NOT dev_up;

IF NOT start THEN
t1(IN:=FALSE , PT:= , Q=> , ET=> );
t2(IN:=FALSE , PT:=, Q=> , ET=> );
dev_up:=FALSE;
END_IF
IF start AND NOT t2.IN THEN
t1(IN:=TRUE , PT:=t#1s , Q=>dev_up , ET=> );
END_IF
IF start AND dev_up THEN
t1(IN:=FALSE , PT:= , Q=> , ET=> );
t2(IN:=TRUE , PT:=t#1s, Q=> , ET=> );
IF t2.Q THEN
t2(IN:=FALSE , PT:=, Q=> , ET=> );
dev_up:=FALSE;
END_IF
END_IF

Originally Posted by TurpoUrpo

You must always make the call of ton. Now if start is not true you wont call the ton.

dev_down := NOT dev_up;
IF start THEN
      t1(IN:=TRUE , PT:=t#1s , Q=>, ET=> ); //this one will execute the ton, if start is not true, it wont execute, also when call is made u assign true to in so it will always be true when call is made.
  IF t1.Q THEN
    dev_up:=TRUE;
    t1.IN:=FALSE;
  END_IF
END_IF

[TurpoUrpo]

You should call the timer exactly once in one program scan.

Example:

IF (StartCondition)
    THEN
    t1.in := true;
ELSE
    t1.in := false;
END_IF; //this could also be written "t1.in := StartCondition;"

t1(IN:= , PT:=t#1s , Q=> , ET=> ); //execute timer

IF (t1.q)
    THEN
    //do stuff
END_IF;

Basically, modify input parameters, then execute timer, then read output parameters.

[Andreik]

Now that's way much convenient. Thank you very much as my ST programming has really improved in a few day span. Here is my revised program:

dev_down := NOT dev_up;
t1(IN:= , PT:=t#1s , Q=> , ET=> );
t2(IN:= , PT:=t#1s , Q=> , ET=> );
IF NOT start THEN
t1.IN:=0;
t2.IN:=0;
dev_up:=0;
END_IF
IF start AND NOT t2.IN THEN
t1.IN:=1;
IF t1.Q THEN
dev_up:=1;
END_IF
END_IF
IF start AND dev_up THEN
t1.IN:=0;
t2.IN:=1;
IF t2.Q THEN
t2.IN:=0;
dev_up:=0;
END_IF
END_IF

Originally Posted by TurpoUrpo

You should call the timer exactly once in one program scan.

Example:

IF (StartCondition)
    THEN
    t1.in := true;
ELSE
    t1.in := false;
END_IF; //this could also be written "t1.in := StartCondition;"

t1(IN:= , PT:=t#1s , Q=> , ET=> ); //execute timer

IF (t1.q)
    THEN
    //do stuff
END_IF;

Basically, modify input parameters, then execute timer, then read output parameters.

[fsoria]

don't assign value to Q...you should just monitor the value of Q so that you can control the IN