A SCADA system, better known as HMI, is the visible connection between operators and the machine control application.
A good UI (user interface) ensures that users can perform their tasks quickly, easily and efficiently. This avoids mistakes and problems with the system during production are spotted earlier on. This can limit lost production. A good UI also ensures intuitive operation, which considerably reduces the learning process of operators.
When designing the UI, we consider the following rules of thumb:
- Visibility of the machine’s status
- Agreements between the system and the real world
- Give the user control over the system
- Follow conventions that users are familiar with
- Prevent users from being able to make mistakes
- Recognising is easier than remembering
- Flexible and efficient, for experienced and inexperienced users
- Limit information to what is relevant, less is more!
- Clear error messages that help to solve the problem
- Help and documentation only as a last resort