CH 15: Sequencer Instructions

Which of the following is a possible state change for output devices connected to output ports?

• On to off state

• Off to standby state

• On to standby state

• Off to sleep state

What do certain PLC manufacturers use instead of the sequencer instruction?

• Table-to-register instructions

• File-to-word instructions

• Both A and B

• None of the above

What is used to reset the instruction in the Sequencer Output Instruction (SQO)?

• Done bit of index register or control register

• Power switch

• Temperature sensor

• Network cable

What is the designation for bit data file three?

• B3

• B10

• N7

• B7

What is the radix used in the data file B3 shown in the diagram?

• Decimal

• Hexadecimal

• Octal

• Binary

What does "M2" stand for in the sequencer output pattern?

• Mode 2

• Motor 2

• Module 2

• Memory 2

What is the purpose of the "POS" in the Control Register (R6)?

• Step position

• Position of memory

• Position of data

• Position of instruction

What is the purpose of a sequencer output (SQO) in a PLC ladder logic diagram?

• To control the sequence of operations

• To measure temperature

• To calculate speed

• To display data

What is the control address for the sequencer output (SQO) in the diagram?

• R6:0

• R5:0

• R4:0

• R3:0

What is the length of the sequencer output (SQO) in the diagram?

• 4

• 5

• 6

• 7