What is the difference between compact PLC and modular PLC?

Modular Type PLC is a rack-based system with individual Power supply, Processor, Various IO modules, Extension units, mounted on one or more racks. Compact PLCs are un-divided solid structures, generally non-expandable with a specific number of inputs, and outputs.

What are two types of PLC Systems?

The two main types of PLC are fixed / compact PLC and modular PLC.

What is a module PLC?

In a PLC system there will usually be dedicated modules for inputs and dedicated modules for outputs. An input module detects the status of input signals such as push-buttons, switches, temperature sensors, etc.. An output module controls devices such as relays, motor starters, lights, etc.

What are different modules of PLC?

Different types of PLC Modules

• Rack or Chassis. The rack or chassis is the most important part of the modular or rack-mounted PLC system.
• Power Supply (PS) Module.
• Central Processing Unit.
• Interface Module (IM)
• Signal Module (SM)
• Function Modules (FM)
• Communication Processor (CP)

What is fixed compact PLC?

What is the Compact PLC? In Compact PLC, I/O capability is fixed and determined by the manufacturer. They are used for small scale uses. A single case contains the multiple built-in modules. The integral PLC has integrated power supply, CPU, I/O interfaces and other components are housed in a compact chassis.

Where is a modular PLC used?

Modular PLCs are often used in applications where many inputs and outputs are required, such as process control in the manufacturing sector. Rack-mounted PLCs are often used in complex applications where many inputs and outputs are required, such as large process control systems in the manufacturing sector.

How many modules are there in PLC?

Every PLC system needs at least these three modules: CPU Module. Power Supply Module. One or more I/O Module.

How does a modular PLC work?

The modular PLC is a type that allows multiple expansions of the PLC system through the use of modules, hence the term “modular”. Modules give the programmable logic controller additional features like increased number of I/O units, and they are usually easier to use because each component is independent of each other.

In which PLC I O slots can be expanded?

The newest member of the DirectLogic line of programmable logic controllers, the DL06, is an expandable micro PLC that combines 20 inputs and 16 outputs of fixed I/O points, with up to four option card slots for discrete, analog, and communication modules, providing up to 100 total I/O points.

What is a unitary PLC and modular PLC?

Image Credit: gerenme/iStock/Getty Images. A programmable logic controller, or PLC, is a special type of computer that is commonly used in commercial and industrial settings. PLCs are designed to run automated systems, such as robotics or other machines, and use inputs and outputs to read and send data.

Which type of PLC uses separate modules?