Plc Topic 5 Study Practice Test.

PLC TOPIC 5 STUDY PRACTICE TEST. What does the memory map for a typical PLC processor consist of? - CORRECT ANSWER The memory map for a typical PLC processor consists of program files and data files. Compare the function of the PLC program and data files. - CORRECT ANSWER Program files are the part of the processor memory that stores the user ladder logic program. The data files store the information needed to carry out the user program. In what manner are data files organized? - CORRECT ANSWER Data files are organized by the type of data they contain. List eight different types of data files used by SLC 500 controller. - CORRECT ANSWER Output data file, input data file, status data file, binary data file, timer data file, counter data file, control data file, integer data file, floating point data file. What information is stored in the input image table file? In what form is the information stored? - CORRECT ANSWER The input image table file stores the status of the input terminals for the controller. Information in the input image table is stored in the form of bits. What information is stored in the output image table file? In what form is this information formed? - CORRECT ANSWER The output image table file stores the status of the output terminals for the controller. Information in the output image table is stored in the form of bits. Outline the sequence of events involved in a PLC scan cycle. - CORRECT ANSWER During a PLC scan cycle the processor reads all the inputs, takes these values, and energizes or de-energizes the outputs according to the user program. List four factors that enter into the length of the scan time. - CORRECT ANSWER The speed of the processor module.