HMI advantages and Disadvantages
Some of the advantages of using HMIs are listed below.
|Reduction in control panel size||Being able to perform several functions through the software reduces the need of hardware installation, which in turn reduces equipment size.|
|Reduction in wiring cost||The HMI eliminates the need for complex and expensive wiring and performs the same tasks through software settings.|
|Standardization of control panels||HMIs enable control panels to be standardized because screen data settings can be changed using software even in the case of specification change.|
|Added value for the control panel||In addition to switch and lamp display, the HMI has other features such as graphics and text displays. It is capable of performing various functions that add value to the control panel.|
Some of the common concerns with HMIs are listed below. We will address these concerns in the following pages.
- Aren’t HMIs expensive?
- Isn’t it difficult to design HMI screens?
- Don’t people feel uncomfortable with touch panels because they are not widely used?
- Won’t my equipment become inoperable if the HMI were to break down?
Aren’t HMIs expensive?
The cost-performance for HMIs has increased significantly due to advancements in liquid crystal and semiconductor technology. From reductions in wiring and parts cost, as well as design and fabrication cost, to the reduction in equipment sizes, overall appearance improvement, and several other factors accelerated by the standardization of control panel design and fabrication, you can easily identify the many advantages of incorporating an HMI in your equipment
Isn’t it difficult to design HMI screens?
We offer dedicated software to facilitate the design of HMI screens, even for users without prior knowledge of difficult programming languages such as Visual Basic, C, etc. A comprehensive library consisting of switches, lamps, and other parts are integrated in the software.
Don’t people feel uncomfortable with touch panels because they are not widely used?
Just as touch panels gained popularity on ATMs, people have become comfortable with using touch panels in their everyday lives. Today, there probably are not too many people who feel uncomfortable with them.
- Improved communication between the operator and the machine, making it easier to control and monitor the system
- Increased efficiency and productivity, as the operator can quickly and easily access and input information
- Enhanced safety, as the operator can easily access emergency stop buttons and other safety features
- Improved accuracy and quality control, as the operator can easily input and monitor data
- Greater flexibility and customization, as the interface can be tailored to the specific needs of the operator and the task at hand.
The disadvantages of a Human Machine Interface (HMI) include:
- High cost of installation and maintenance, as specialized software and hardware may be required
- Dependence on the operator’s skill level, as the interface can be complex and require training to use effectively
- Limited scalability, as the interface may not be able to accommodate future changes or upgrades to the system
- Limited compatibility with other systems, as the interface may only be able to communicate with certain types of machines or systems
- Limited reliability, as the interface may malfunction or fail, causing downtime or other issues.
- Security concerns, as an interface can be vulnerable to hacking or other cyber threats if it is not properly secured.