What is the basic structure of a PLC State 5 units?

They both have a power supply, a CPU (Central Processing Unit), inputs and outputs (I/O), memory, and operating software (although it’s a different operating software).

What four main units are found in a PLC central processing unit?

The structure of a PLC can be divided into four parts. They are input/output modules, central processing unit (CPU), memory and programming terminal.

What are the basic modules of PLC?

Basics of PLC Modules | Different Types of PLC Modules

• Rack or Chassis.
• Power Supply Module (PS)
• Central Processing Unit (CPU)
• Interface Module (IM)
• Signal Module (SM)
• Function Module (FM)
• Communication Processor (CP)

What is structure in PLC?

The structure of a PLC can be divided into four parts. They are input/output modules, central processing unit (CPU), memory and programming terminal. Standard interfaces built-in to PLC allow them to be directly connected to process actuators and transducers without the need for intermediate circuitry or relays.

What is a PLC expansion module?

PLC expansion modules are used in a wide range of applications such as non-automatic weighing machines, measuring of crane and cable loads, force measuring, platform scales and crane scales. The primary task of an expansion module is the measurement and conversion of sensor voltage into a weight value.

What is rack mounted PLC?

The rack mounting type of PLC is similar to the modular concept, but is implemented differently. Whereas each module in a modular PLC connects to the base unit directly, a rack mounting PLC keeps each module separate. All extra modules are connected through a network, and modules are held in organized racks.

What is the correct order of steps in PLC?

Operating cycle of PLC There are four steps in PLC operations. They are (1) Input scan, (2) Program scan, (3) Output scan, and (4) Housekeeping. 1. Input scan-scan the state of the inputs 2.

What is the correct order of steps in PLC Mcq?

Steps of PLC Operations:

• Input scan: In this, the state of all input devices that are connected to the PLC is detected.
• Program scan: This step executes the user-created program logic.
• Output scan: This step energizes or de-energizes all output devices that are connected to the PLC.