Question 1

The method employed to program a PLC is specific to the make and model of the controller.

Accepted Answer

Each PLC has its own programming software that is specific to the make and model of the controller, making the programming method unique to each PLC.

Question 2

One factor that determines the size and cost of a programmable logic controller is its I/O capacity.

Accepted Answer

The I/O capacity of a programmable logic controller is one of the factors that determines its size and cost. A larger I/O capacity typically requires a larger and more expensive PLC.

Question 3

The I/O rack of an PLC is used to connect the ____ to the outside world.&#10;A) programming terminal&#10;B) power supply&#10;C) CPU&#10;D) program loader

Accepted Answer

The I/O (Input/Output) rack of a PLC (Programmable Logic Controller) is used to connect the CPU (Central Processing Unit) to the outside world, allowing it to receive inputs from and send outputs to external devices.

Question 4

Programmable logic controllers are designed to be programmed with common computer languages.

Accepted Answer

Programmable Logic Controllers (PLCs) are typically programmed using specialized languages defined by the IEC 61131-3 standard, such as Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Instruction List (IL), and Sequential Function Chart (SFC), rather than common computer programming languages like Python, Java, or C++.

Question 5

Programmable logic controllers can be divided into four primary parts: the power supply, the central processing unit (CPU), the programming terminal, and the ____.&#10;A) loading terminal&#10;B) internal relay&#10;C) programmable logic controller&#10;D) the I/O rack

Accepted Answer

The I/O rack is the fourth primary part of a programmable logic controller, which houses the input/output modules used to interface with the outside world.

Question 6

Programmable logic controllers (PLCs) were first used by the automotive industry in the late 1970s.

Accepted Answer

PLCs were first introduced in the late 1960s by the automotive industry to replace relay logic systems, not in the late 1970s.

Question 7

The actual logic of the control circuit is performed by ____.&#10;A) loading terminals&#10;B) internal relays&#10;C) programmable logic controllers (PLC)s&#10;D) program loaders

Accepted Answer

The answer of The actual logic of the control circuit...

Question 8

A programming terminal cannot be used to troubleshoot a circuit.

Accepted Answer

A programming terminal can be used to troubleshoot a circuit by running diagnostics, monitoring the operation of the circuit, and identifying errors or malfunctions in the programming or hardware.

Question 9

One method of controlling the output is with small relays, in which the CPU controls the ____.&#10;A) relay coil&#10;B) light-emitting diode&#10;C) resistor&#10;D) action of the timer

Accepted Answer

Small relays can be used to control the output by the CPU controlling the relay coil. When the CPU sends a signal, the relay coil is energized or de-energized, which can then control the output. The other options (B, C, and D) are not directly related to controlling the output with small relays.

Question 10

Timers are generally programmed in ____ intervals.&#10;A) 0.1-second&#10;B) 0.5-second&#10;C) 1.0-second&#10;D) 2.0-second

Accepted Answer

The answer of Timers are generally programmed in ____ intervals.&#10;A)...

Deck 58: Programmable Logic Controllers