What is the function of a PLC’s data logging?
A. To store data from the industrial process
B. To store the PLC’s configuration settings
C. To record data over a period of time
D. All of the above
Answer:C
What is the function of a PLC’s data logging?
A. To store data from the industrial process B. To store the PLC’s configuration settings C. To record data over a period of time D. All of the above
Explanation: Data logging is the process of recording data over a period of time. This feature allows the PLC to store data from the industrial process such as process variable, alarms, events etc over a period of time. This data can be used for trend analysis, reporting, and troubleshooting. It also enables to record historical data for compliance purposes.