This PLC was introduced in 1991 and was intended to be a more economical solution than the PLC-5 that could be used for smaller or less complex applications.

This PLC's processors have built-in Ethernet cards which eliminates the cost of the external Ethernet modules needed for its processors.

This is where the PLC program is stored.

This PLC that has been around since 1986 produced by Rockwell Automation.

One of the unique features of this PLC is that a processor can be placed in any slot of the the chassis and there can be multiple processors in one chassis.

It is an industry primarily produced its products using one of two methods: Blast Furnace or Electric Arc Furnace.

It is commonly known as flat glass, is made by floating molten glass on a bed of molten tin.

It is a heat treatment process that changes the physical and sometimes also the chemical properties of a material to increase ductility and reduce the hardness to make it more workable.

A material manufactured in thin sheets from the pulp of wood or other fibrous substances.

This industry involves spinning, weaving, dyeing, printing, and finishing.

It is often defined as miniature industrial computers that contain hardware and software used to perform control functions.

This electromechanical component works by utilizing a coil that, when energized, creates a magnetic force to effectively pull a switch to the ON or OFF position.

It is the first PLC produced by the company Modicon.

In relay system we cannot write the program.

In PLC changes in program is very easy. You can modify the designing circuit.

PLC is operated on the analog system.

Relay consist of memory to store the program.

PLC plays a monitoring as well as controlling role in designing circuits.

This are I/O that is also referred as digital signals that are either on or off.

This I/O signals refers to signals that have a range of values much greater than just 1 or 0.