Bakersfield College Electronics Program Quiz

What is the instruction called for a normally open instruction in SLC 500?

• XIO

• OTE

• XIC

• OTL

What does the XIO instruction in SLC 500 represent?

• Off condition

• Output enable

• Output latch

• On condition

Which instruction is used to maintain an output on even if the status of the input logic changes?

• XIO

• OTU

• OTL

• XIC

What is the purpose of the status file in SLC 500?

• Holds input data

• Holds output data

• Holds timer information

• Holds flag or status bits

How many timers can a PLC ladder diagram have access to?

• 1024

• 256

• 128

• 512

What is the purpose of the control file (R6) in SLC 500?

• Used with sequencer and shift register instructions

• Used as temporary storage integer registers

• Holds input data

• Used for bit shift and sequencer instructions

What type of data is stored in the Bit file (B3 and B10) in SLC 500?

• Control registers

• Output data

• Input data

• 16-bit registers

What is the first step in the PLC operational cycle?

• Output scan

• Input scan

• Program scan

• Data Files scan

Which program file in the project tree area is used by the PLC processor to keep track of its internal register settings?

• Subroutine Program Files

• Main Program File (LAD2)

• SYS1

• SYS0

What is the purpose of the Main Program File (LAD2) in a PLC project?

• Holds information related to counters

• Holds information related to the number of timers used

• Holds the main PLC ladder logic diagram

• Holds the flag or status bits of the ladder logic diagram