What is the function of a 'data table' (file) in PLC memory, and what are the main types?
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A
Data tables are output-only registers that store the states commanded to field actuators
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B
Data tables are organized memory areas storing different data types: output image, input image, timer/counter values, integer data, floating point, and bit files — each accessed by address type
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C
Data tables are historical logs of previous I/O states used for troubleshooting post-fault analysis
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D
Data tables are configuration files holding PLC communication settings and IP addresses