What is the function of a PLC’s redundancy?
A. To provide a backup PLC in case of a failure
B. To provide a backup power supply in case of a failure
C. To provide a backup communication link in case of a failure
D. All of the above
Answer:D
What is the function of a PLC’s redundancy?
A. To provide a backup PLC in case of a failure B. To provide a backup power supply in case of a failure C. To provide a backup communication link in case of a failure D. All of the above
Explanation: Redundancy is the provision of backup systems or components in case of a failure. This feature provides a backup PLC, a backup power supply, and a backup communication link in case of a failure. This ensures that the industrial process continues to run even in case of a failure, minimizing downtime and ensuring the continuity of the process. This feature is particularly useful for critical processes that cannot afford to have any downtime.