Call a Function Block

2020-02-27T21:52:47.959000Z

Nitrozin hat geschrieben:
Hi,
- call a FB from your event wich sets a global bit
- call PRG1 in main cycle as long as bit is true.
- reset the bit in PRG1 when all stuff is send.
Nitro

Perhaps you want to say this:

VAR_GLOBAL
  Gstart: BOOL;
END_VAR

System Event 'start' --> START_PRG
Cyclic Tasks which calls --> PRG_WITH_FB

PROGRAM START_PRG
Gstart := TRUE;

PROGRAM PRG_WITH_FB
VAR
  Inst: FB;
  error: INT;
END_VAR
IF Gstart THEN
  (* send = IN_OUT variable. Set to FALSE when finished *)
  Inst(var1 := '', .., send := Gstart, error => error);
  IF NOT send THEN
    Gstart := FALSE;
  END_IF
END_IF

Call a Function Block

2020-02-27T21:52:43.722000Z

I should mention that I use the version 2.3.9.13

What I did that seems to work:

System Event 'start' --> START_PRG

PROGRAM START_PRG
VAR
  Inst: FB;
  error: INT;
END_VAR
go := TRUE;
WHILE go DO
  Inst(var1 := '', .., send := go, error => error);
END_WHILE

In fact I simulates cycles with a WHILE boucle. Is the good way to do in CoDeSys development ?

I don't think so. My WAGO stops responding

Call a Function Block

2020-02-27T21:52:42.213000Z

Thanks for you reply.

Nitrozin hat geschrieben:
Hi,
- call a FB from your event wich sets a global bit
Nitro

So we can call a FB from an event ? When I press the F2 key, only PRGs are proposed.

I don't understand how we can call a FB. We do not need to create an instance ? It does not seem to be possible in System Events.

And as I said, apparently we can not use parameters for POU in System Events.

Call a Function Block

2020-02-27T21:52:37.886000Z

Hi,

call a FB from your event wich sets a global bit
call PRG1 in main cycle as long as bit is true.
reset the bit in PRG1 when all stuff is send.

Nitro

Call a Function Block

2020-02-27T21:52:36.389000Z

Hi,

I call a Program (PRG1) from System Events (event start for example).

PRG1 have to send a email. But the function to do this is a function block and need multiple cycles.

How to do this when PRG1 is called once and have only one cycle.

I also notes that I can't put parmeters to call a program from System Events.

It is possible from a Tasks Config but not from System Events.

Thanks,

Romuald.

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