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Button opener contact

€1,49 EUR
€1,49 EUR
Sale Sold out
Description

The FB_DualContactRelay function block controls main and auxiliary contacts (NO/NC) depending on a control signal ( #Coil_A1 ). Inputs for normally closed and normally open contacts are taken into account via #Klemme13 / #Klemme21 . The outputs ( #Klemme14 , #Klemme22 , #Klemme34 , #Klemme42 ) follow the logic: if the coil is activated, the NO contact is passed through; otherwise, the NC contact is passed through. The block recognizes a deactivation mode and reports its status.

Note: This logic is intended as a template. It must be integrated, reviewed, and approved by qualified personnel before productive use. Improper use may result in unexpected behavior.

How it works
Disabled

If #Enable is not active, all outputs are set to a safe initial position (all contacts deactivated). The error indicator remains active, and the status indicates deactivation.

Activated

When the block is activated, the control signal #Coil_A1 is evaluated:

  • #Klemme14 := #Klemme13 AND #Coil_A1 – Main NO only if input and coil are set
  • #Klemme22 := #Klemme21 AND NOT #Coil_A1 – Main NC if Coil is not set
  • #Klemme34 := #Klemme33 AND #Coil_A1 – Auxiliary NO analog
  • #Klemme42 := #Klemme41 AND NOT #Coil_A1 – Auxiliary NC analog

Errors are reset, status is OK.

Technical details
  • Inputs: #Enable , #Coil_A1 , #Klemme13 , #Klemme21 , #Klemme33 , #Klemme41
  • Outputs: #Klemme14 (NO), #Klemme22 (NC), #Klemme34 (Auxiliary NO), #Klemme42 (Auxiliary NC)
  • Status & Diagnosis: #Error , #Status , #DiagnosticCode
  • Logic: Simple linking of inputs and outputs depending on the coil state with fallback when deactivated.
Possible applications
  • Control of redundant NO/NC contacts in control or signaling chains
  • Simple switching behavior based on a control signal
  • Integration as a module in higher-level process and security logic after testing
  • Linking main and auxiliary contacts for improved feedback

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

compatibility
  • Siemens S7-1200 & S7-1500 controllers
  • Can be used in TIA Portal-based projects
  • Easy integration into higher-level control architectures
  • Deactivated state without unwanted switching states
Scope of delivery

You receive:

  • An SCL file with implemented function block
  • Complete declaration of inputs/outputs
  • Annotated structure for quick integration
  • Quick guide for integration

The download link will be provided after purchase.

Support

I am happy to support you with:

  • Adjusting the contact logic
  • Integration into control processes or HMI
  • Error analysis and status interpretation
  • Specific extensions

Contact is possible via shop message or email. Customization options are available as an option.