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Level switch

€1,95 EUR
€1,95 EUR
Sale Sold out
Description

The FB_LevelSwitch function block represents a level switch with realistic contact mapping. It detects whether a defined level has been reached ( #FloatSwitch ) and sets normally closed ( #Out_13_14 ) or normally open ( #Out_21_22 ) contacts accordingly, with virtual enable inputs ( #Input_13 , #Input_21 ) controlling the output. A simulation mode allows testing of the logic without actual sensor connection; reset and deactivation ensure safe basic states.

Note: This logic serves as a template. Before productive use, it must be integrated, tested, and approved by qualified personnel. Inadequate integration may result in incorrect level evaluation or unexpected switching behavior.

How it works
Reset

With #Reset , the outputs are brought into a defined safe state: the normally closed contact is open, the normally open contact is closed. The status indicates Reset, and errors are reset.

Disabled

If #Enable is not set, both outputs are inactive. The block behaves passively without error indication or switching action.

Simulation mode

In simulation mode, the level signal ( #FloatSwitch ) is mapped directly to the outputs: the normally closed contact follows the status, the normally open contact is inverted. The virtual inputs are not required.

Real operation

In real-time operation, virtual inputs act as releases:

  • #Out_13_14 (opener) is only active if #Input_13 is set and the level is reached.
  • #Out_21_22 (normally open) is only active if #Input_21 is set and the level is not reached (inverted).

At the end, the status and diagnostics are reset if there are no errors.

Technical details
  • Inputs: #Enable , #Reset , #SimMode , #FloatSwitch , #Input_13 , #Input_21
  • Outputs: #Out_13_14 (NC), #Out_21_22 (NO)
  • Logic: Level monitoring with release via virtual inputs and simulation mode
  • Status & Diagnosis: #Error , #Status , #Diagnostic
  • Modes: Reset, Disabled, Simulation, Real-time
Possible applications
  • Level monitoring in tanks, containers or level systems
  • Virtual release for testing and validation purposes without real sensors
  • Integration into higher-level control and alarm chains for status feedback
  • Simulation of switching behavior at different water levels

Note: Before productive use, a technical inspection and approval by qualified personnel is required.

compatibility
  • Can be used in PLC systems with SCL support (e.g. Siemens TIA Portal)
  • Modular integration into process and diagnostic systems
  • Simulation mode enables testing without real level change
  • Safe basic state in deactivated state
Scope of delivery

You will receive:

  • An SCL file with the implemented function block FB_Levelswitch
  • Complete declaration of all inputs/outputs and internal states
  • Annotated structure for quick adaptation
  • Quick guide for integration into existing automation projects

The download link will be provided after purchase.

Support

I support you with:

  • Adjustment of level conditions and release logic
  • Integration into control or alarm chains
  • Simulation before real operation
  • Special extensions for individual requirements

Contact is possible via shop message or email. Customized adjustments are available as an option.