I only need 7,8, 9, 14 and 15 please I. The PLC is programmed by technicians usi

Question

I only need 7,8, 9, 14 and 15 please

I. The PLC is programmed by technicians using: The C programming language b) Ladder logic c) The choice of language used depends on the manufacturer d) None of the above 2. Changing relay oontrol type circuits involves changing a) The input circuit devices b) The voltage levels of most lo The circuit writing d) The input and output devices 3. The most common programming device for PLCs is the: a) Dumb terminal b) Dedicated programming terminal c) Handheld programmer (d) Personal computer 4. CPU stands for central processing unit. True or False? True b) False 5. o-isolation a) ls used to protect the CPU from real-world inputs b) is not used in PLC but must be provided by the user c) Is used to protect the CPU from real-world outputs d) Both a and c 6, EEPROM is: a) Electrically erasable memory b) Electrically programmable RAM c) Erased exposing it to ultraviolet light ble e) A, b, and d True or False? 7. RAM typically holds the operating system. a) True b) False ladder diagram include: 8. Typical program storage devices for a) Computer disks b) EEPROM c) Static RAM cards d) All of the above e) None of the above characteristics for: 9. The IEC standard specifies a) PLC communications b) EEPROM c) Memory

Explanation / Answer

7. a) True

8. e) None of the above

9. d) PLC programming languages

15. Once the program is in the CPU, the PLC is then set to “run”. The application program is then executed repeatedly. In addition to executing the program, the CPU regularly reads the status of the input devices, and sends data to the output devices. The Input system senses the status of the real world inputs (a switch, a level, etc.), translates them to values that can be used by the CPU, and writes those values to the Input table. The application program is executed, and writes values to the Output table. The Output system then converts the output value to a real world change (motor turns on, valve opens, etc.)

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