When a master reset is issued, which scope is typically reset?

When a master reset is issued, which scope is typically reset?

• A. Only the last station
• B. All devices at the same time
• C. The operator panel only
• D. The display screens

Answer: (B)

Master reset is a system-wide restart that reinitializes every connected device in the control network. When issued, all components—controllers, operator interfaces, I/O modules, and display units—return to their default startup state at the same time. This synchronized reset ensures there are no partial or conflicting states across the system, which is crucial for safe and reliable startup after faults or maintenance. Resetting only a single station, the operator panel, or just the display screens wouldn’t reestablish a consistent baseline for the entire network, which is why resetting all devices at once is the correct description.

Master reset is a system-wide restart that reinitializes every connected device in the control network. When issued, all components—controllers, operator interfaces, I/O modules, and display units—return to their default startup state at the same time. This synchronized reset ensures there are no partial or conflicting states across the system, which is crucial for safe and reliable startup after faults or maintenance. Resetting only a single station, the operator panel, or just the display screens wouldn’t reestablish a consistent baseline for the entire network, which is why resetting all devices at once is the correct description.