It is often helpful to be able to run a process either automatically or in “manual mode”. If the system is displayed as a mimic in the program, manual mode becomes much more intuitive and there is less chance of making a mistake.
The example below shows:
- A mimic where in “Maintenance Mode” (i.e. “manual mode”), valves and pumps can be turned on or off by clicking on them (subject to certain interlocks)
- Clicking on certain more complex items causes a sub-panel to open where several values can be specified (the power supply’s pale green sub-panel is shown)
- Items that cannot be accessed by the user at any given time are disabled (greyed-out) – here, automatic processes cannot be run until the user comes out of “Maintenance Mode” by pressing “Maintenance Disable”.