How to write a sequence

You need to have TcoCore installed. If you don't here's how to do it link

I recommend to read more about it here.

1. Create a Context

FUNCTION_BLOCK MainContext EXTENDS TcoCore.TcoContext
VAR
END_VAR

2. Create a Sequence

FUNCTION_BLOCK AutomaticSequence EXTENDS TcoCore.TcoSequencer
VAR
END_VAR

3. Create Main method in AutomaticSequence and start writing your sequence with Step

METHOD PROTECTED  Main : BOOL
---
IF Step(0, TRUE, 'First Step') THEN
    StepCompleteWhen(TRUE);
END_IF

IF Step(10, TRUE, 'Second Step') THEN
    StepCompleteWhen(TRUE);
END_IF

IF Step(20, TRUE, 'Third Step') THEN
    StepCompleteWhen(TRUE);
END_IF

IF Step(30, TRUE, 'Last Step') THEN
    CompleteSequence();
END_IF

4. Create instance of AutomaticSequence in MainContext

FUNCTION_BLOCK MainContext EXTENDS TcoCore.TcoContext
VAR
    AutomaticSeq : AutomaticSequence(THIS^, eRestoreMode.None);
END_VAR

5. Run the AutomaticSequence in MainContext.Main method

METHOD PROTECTED  Main
---
AutomaticSeq.Run();

6. Run the MainContext in PRG

PROGRAM MAIN
VAR
	MainContext : MainContext;
END_VAR
---
MainContext.Run();