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Asked:20 Oct 2025

SIMATIC WinCC (TIA Portal): Kp300 Continuous Increment/decrement Including Fkeys

I have two function keys assigned to increment and decrement an Integer tag.
Is there a function available that will continuously change the tag while the key is held pressed down and stop changing when the key is released.

#sosflex #SIMATIC WinCC (TIA Portal) #siemens
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Answers(1)
Siemens Test Added an Answer on20 Oct 2025

Continuous Tag Modification with Held Function Keys

Yes, Siemens HMIs support continuous tag modification while a function key is held down. This is achieved using the "Hold Time" or "Repeat Rate" settings within the key's configuration.

How to Configure:

  1. In WinCC (TIA Portal), navigate to the HMI screen and select the function key.
  2. In the function key's properties, locate the "Hold Time" or "Repeat Rate" parameter.
  3. Set a value for this parameter (e.g., 200ms - 500ms). This determines how quickly the tag will be incremented/decremented while the key is pressed.
  4. Ensure the "Continuous activation" option is enabled.

Important Considerations:

  • Adjust the "Hold Time/Repeat Rate" to achieve the desired speed of change.
  • Consider the process limitations and avoid exceeding safe operating ranges.

For detailed instructions and further assistance, please refer to the Siemens documentation:

KB1000798 - How do you implement a continuous increment/decrement function for a tag with a key press?
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