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What skills and competencies are necessary to become an expert in HMI testing and debugging?

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HMI testing and debugging is a crucial aspect of software design, especially for applications that involve human-machine interaction. HMI stands for human-machine interface, and it refers to the ways that users interact with software systems, such as graphical user interfaces, voice commands, touchscreens, keyboards, and sensors. To become an expert in HMI testing and debugging, you need to develop a set of skills and competencies that will help you ensure the usability, functionality, and reliability of your software products. In this article, we will discuss some of the most important skills and competencies that you need to master in order to excel in HMI testing and debugging.

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Stanislav Aghamatov

Process Automation Engineer

1 User-Centered Design

One of the key skills that you need to have as an HMI tester and debugger is user-centered design. User-centered design is an approach that focuses on understanding the needs, preferences, and behaviors of the target users, and designing the software system accordingly. User-centered design involves conducting user research, creating user personas, defining user scenarios, designing user interfaces, and evaluating user feedback. User-centered design helps you create software systems that are intuitive, easy to use, and satisfying for the users.

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Stanislav Aghamatov

Process Automation Engineer
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Testing the software within the HMI: This involves ensuring that all technical tasks are completed and thoroughly tested. It also includes verifying the visibility of objects or animations, the appropriateness of colors, icons, images, fonts, and text sizes. Additionally, the correct functioning of alarms and indicators can be considered part of HMI testing within the HMI software

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2 Testing Methods

Another essential skill that you need to have as an HMI tester and debugger is testing methods. Testing methods are the techniques and tools that you use to verify and validate the quality and performance of your software system. Testing methods include unit testing, integration testing, system testing, acceptance testing, usability testing, and accessibility testing. Testing methods help you identify and fix bugs, errors, and defects in your software system, as well as ensure that it meets the requirements and expectations of the users and stakeholders.

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Stanislav Aghamatov

Process Automation Engineer
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Testing methods for HMI can be categorized into several types. These include testing the software itself (as mentioned above), communication testing (which will be elaborated on below), and testing the data acquisition aspect if the HMI software includes this feature. For instance, certain variables may need to be periodically saved and acquired (considering the variable's name, value, and date and time), at intervals like 1 second, 5 seconds, 1 minute, 1 hour, etc. Meanwhile, other variables might require saving only when their values change.

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3 Debugging Tools

A third important skill that you need to have as an HMI tester and debugger is debugging tools. Debugging tools are the software applications that you use to locate and resolve the root causes of the problems that you encounter during testing. Debugging tools include code editors, compilers, interpreters, debuggers, profilers, analyzers, and monitors. Debugging tools help you inspect and modify the code, data, and behavior of your software system, as well as track and optimize its performance and resource consumption.

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4 Communication Skills

A fourth vital skill that you need to have as an HMI tester and debugger is communication skills. Communication skills are the abilities that you use to communicate effectively with different audiences, such as users, developers, designers, managers, and clients. Communication skills include listening, speaking, writing, reading, presenting, and collaborating. Communication skills help you understand and convey the goals, specifications, feedback, and results of your software system, as well as coordinate and cooperate with other team members and stakeholders.

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Stanislav Aghamatov

Process Automation Engineer
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Communication is another critical aspect that needs to be tested in HMI systems. Maintaining communication between a PLC and HMI is relatively straightforward when both models are the same. However, challenges arise when the models differ, and the communication is not native to the specific HMI or PLC. In such scenarios, communication may be established through addresses, meaning that each variable within the HMI has its own address from the PLC. In these cases, it's essential to test all the variables individually to ensure reliable communication.

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5 Problem-Solving Skills

A fifth crucial skill that you need to have as an HMI tester and debugger is problem-solving skills. Problem-solving skills are the cognitive and creative abilities that you use to analyze, evaluate, and solve the challenges that you face during testing and debugging. Problem-solving skills include critical thinking, logical reasoning, decision making, troubleshooting, and innovation. Problem-solving skills help you find and implement the best solutions for the issues that you encounter in your software system, as well as improve its functionality and usability.

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6 Learning Skills

A sixth and final skill that you need to have as an HMI tester and debugger is learning skills. Learning skills are the self-directed and lifelong abilities that you use to acquire and update your knowledge and skills in HMI testing and debugging. Learning skills include curiosity, motivation, research, experimentation, reflection, and feedback. Learning skills help you keep up with the latest trends, technologies, and best practices in HMI testing and debugging, as well as enhance your expertise and competence in the field.

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7 Hereâ€™s what else to consider

This is a space to share examples, stories, or insights that donâ€™t fit into any of the previous sections. What else would you like to add?

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What skills and competencies are necessary to become an expert in HMI testing and debugging?

1

2

3

4

5

6

7

1 User-Centered Design

2 Testing Methods

3 Debugging Tools

4 Communication Skills

5 Problem-Solving Skills

6 Learning Skills

7 Hereâ€™s what else to consider

Software Design

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What skills and competencies are necessary to become an expert in HMI testing and debugging?

1

2

3

4

5

6

7

1 User-Centered Design

2 Testing Methods

3 Debugging Tools

4 Communication Skills

5 Problem-Solving Skills

6 Learning Skills

7 Hereâ€™s what else to consider

Software Design

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