S7-1200 light dimmer

You will use timers to detect short push and long push.

IF ShortPressTimer time > short press time (maybe 0.25 sec?) then

  ShortPressTimer := true;

  ShortPressTimer_EN := false;

END_IF;

If LongPressTimer time > long press time (maybe 1.0 sec) then

  ShortPressTimer := false;

  LongPressTimer := true;

  LongPressTimer_EN := false;

ELSE

  LongPressTimer := false;

END_IF;

// now we know which type of press is presented, act on the analog outputs based on current analog outputs (probably better to use a CASE statement here....)

If out_DimmerValue > (27648/10) THEN

  dimmerNotOff := true;

ELSIF out_DimmerValue < 27648 THEN

  dimmerNotOn := true;

END_IF;

IF ShortPressTimer AND dimmerNotOff THEN // we should turn it OFF

  out_DimmerValue := 27648 / 10

END_IF;

IF ShortPressTimer AND dimmerNotOn THEN // we should turn it ON

  out_DimmerValue := 27648

END_IF;

--- you need to figure out your dimmer outputs for long press by trial and error.

Basically set an update timer to pulse your dimmer value up or down some prescribed amount, then clamp it to 27648/10 (1 volt) for low and 27648 (10 volt) for high.  That will bump up the output pretty smoothly if you set the timer and value bump up/down to suit.

This is untested, and likely to contain bugs.  It however should show you the thought behind it.

AutoGen_2476857

Hello, I want some lights dimmed controlled with S7-1200

• 1 short puch on the switch -> on / off
• longer push on the switch -> dimming up / down

The analog output is connected to the input of the dimmer 1-10V 

I input: Bool %I12.6 Default tag table

output:  Int %QW132 Default tag table

Can someone help me with the programming.

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Split from Dimming lights.

Homework assignment?