Real-world scenarios need to be taken into account when designing HMI. There should be no unnecessary functions that can potentially cause safety issues like they did for an airliner at Nashville International Airport in 2015.
Storyboarding as the first step in high-performance HMI migrationThe first step in migrating to a high-performance human-machine interface (HP-HMI) should always be storyboarding, which offers a visual representation of the layout and hierarchy of the new high-performance graphics (HPGs). This helps operators become an active part of the migration planning process.
Human-machine interface (HMI) migration can be a painful process—especially for operators who have resisted the move from 1st or 2nd generation CRT-based graphics to the new world of gray-scale, ASM-compliant displays with little color and greater concentration of process and instrumentation. One of the prime benefits of migrating to high-performance HMI (HP-HMI) is a reduction in the total number of graphics by as much as 25 to 50%.
When it comes to industrial cyber security issues, a good backup is the best defense. This is especially true as companies are being targeted more and more by ransomware threats from hackers.
While historians and manufacturing execution systems (MES) have been around for a long time, knowing which one to use and how to maximize the benefit of each for particular situations is key.
Most users don't consider custom scripting as a potential hazard or safety concern because custom scripting allows users great flexibility in human-machine interface (HMI) development. However, HMI development software for a newer distributed control system (DCS) has much greater functionality today than in legacy systems.
Upgrading a distributed control system (DCS) with a human-machine interface (HMI) was a simple process until the development team tried duplicating the functionality and identifying tag information.
Since it’s the way that users interact with a control system, don’t underestimate the importance of an effective HMI. It makes a huge difference to users now and down the road.
There are multiple HMI (human machine interface) platforms to choose from, with different styles and preferences driven by many kinds of variables. Driving variables can include integrator preference, customer preference, industry preference, technical support/availability, integrator support/availability, off the shelf software versus custom software, budget, and what best fits. Regardless the platform and driving factors, an HMI makes a control system complete.