Flow Ctrl Tech Engineering

Allen-Bradley ControlLogix: Developing Reusable Add-On Instructions (AOI) & UDTs

Master object-oriented modular PLC programming in Rockwell Studio 5000: Add-On Instructions (AOIs), User-Defined Data Types (UDTs), and tag scoping.

  • AOIs encapsulate reusable machine code (motor control, valve sequencing, analog scaling) with locked revision tracking.
  • AOIs cannot be edited online in older Studio 5000 firmware; design parameter structures thoroughly before deployment.
  • UDT nesting creates clean HMI tag integration in FactoryTalk View and Ignition.

Flow Ctrl Tech Engineering: Turnkey industrial automation, PLC programming, SCADA development, HMI, fieldbuses, and IIoT architectures. Contact our engineering center at [email protected] or phone +91 91110 91005.