Short definition
HMI programming (Human Machine Interface) refers to the development of graphical user interfaces for the visualization and control of industrial processes. It forms the interface between operating personnel and the automation system and enables process data to be monitored, setpoints to be entered and system components to be operated. HMI systems communicate with the PLC via standardized protocols such as OPC UA, PROFINET or Modbus TCP. In membrane filtration systems, they visualize critical parameters and document process sequences in compliance with GMP.
Functional principle
HMI programming is carried out in special development environments such as WinCC, FactoryTalk View or Wonderware InTouch. This involves creating process images that display system statuses in real time - from flow diagrams and trend curves to alarm and event lists. The visualization includes colour-coded status displays, animated symbols and intuitive operating elements. Modern HMI systems integrate recipe management, user management with rights concepts and audit trail functions for batch tracing. Touch panels or web-based clients enable location-independent access.
Areas of application
HMI programming is essential for the efficient operation of complex membrane filtration systems. It enables operators to monitor permeate quality, transmembrane pressure and membrane fouling as well as to initiate cleaning and regeneration cycles manually or automatically. Clear visualization minimizes operating errors and reduces the response time in the event of process deviations.
Typical areas of application:
- Operating and monitoring stations for UF, LF and RO systems
- Batch monitoring in pharmaceutical production
- CIP sequence control and documentation
- Energy management and performance monitoring
- Mobile visualization for maintenance and service personnel
Summary
Professional HMI programming increases system availability through intuitive operability and fast error identification. It fulfills regulatory requirements such as FDA 21 CFR Part 11 through seamless documentation and access controls. For system operators and integrators, it is the key to reduced training costs, optimized process sequences and increased operational reliability in automated filtration systems.
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