CH 13: PLC Logic & Bit Shift Routines

What is the purpose of creating a PLC ladder logic diagram in the context of the objectives?

• To use the bit shift right (BSR) instruction

• To monitor temperature changes

• To calculate power consumption

• To design a user interface

What should be opened to monitor the operation of a bit shift instruction?

• A data file bit dialog box

• A temperature sensor

• A power meter

• A user interface panel

What is the final objective related to bit shift instructions?

• Reset the bit shift instruction to its starting bit position

• Increase the speed of the bit shift

• Change the direction of the bit shift

• Monitor the temperature of the bit shift

How many logic gate instructions are available in Allen-Bradley SLC 500 series PLCs?

• Two

• Three

• Four

• Five

In addition to the SLC 500 series, which other controllers have the same logic gate instructions?

• MicroLogix and PicoLogix

• ControlLogix and CompactLogix

• FlexLogix and SoftLogix

• VersaLogix and SmartLogix

Which logic gate instruction in Allen-Bradley SLC 500 series PLCs outputs true only if both inputs are true?

• OR

• AND

• XOR

• NOT

Which logic gate instruction in Allen-Bradley SLC 500 series PLCs outputs true if exactly one input is true?

• AND

• OR

• XOR

• NOT

What is the operation performed by the NOT gate?

• Inverts the input

• Performs addition

• Multiplies the input

• Divides the input

What is the result of a bitwise inclusive OR operation?

• Only 1 if both bits are 1

• 1 if at least one bit is 1

• 0 if both bits are 1

• Always 0

In the AND operation, what is the destination register?

• B3:1

• B3:4

• B3:7

• B3:10