Rockwell AB1794-IE12 Input Module New Original Packaging

1794-IE12 is a typical application of industrial automation. Initially, PLCs were developed primarily to replace relay circuits and perform sequential control. Over time, PLC manufacturers gradually added functionalities such as analog calculations, PID functions, and more reliable industrial anti-interference technologies. With the increasing demand for networking, various communication interfaces were also added. Alongside the development of fieldbus technology and Ethernet, the application scope of PLCs has expanded significantly. What is a PLC? Programmable Logic Controllers (PLCs) are members of the computer family, designed and manufactured for industrial control applications. Early PLCs were known as Programmable Logic Controllers, abbreviated as PLC, and were primarily used to replace relays for logical control. In 1987, the International Electrotechnical Commission (IEC) issued the third draft of the PLC standard. The draft defines a PLC as follows: “A programmable controller is a digital operation system, specially designed for industrial environment applications. It employs programmable memory to internally store instructions for executing logical operations, sequential control, timing, counting, and arithmetic operations, and controls various types of machinery or production processes through digital and analog inputs and outputs. Programmable controllers and their related peripheral equipment should be designed to be easily integrated into an industrial system and easily expandable in functionality.”

Rockwell AB1794-IE12 Input Module New Original Package

1794-ACN15

1794-ACNR

1794-ACNR15

1794-ADN

1794-ADNK

1794-AENT

1794-AENTR

1794-IA16

1794-IA8

1794-IA8I

1794-IB10x0B6

1794-IB16

1794-IB16D

1794-IB16XT

1794-IB32

1794-IB8

1794-IC16

1794-IE12

1794-IE4X0E2

1794-IE8

1794-IE8H

1794-IF4I

1794-IF4IXT

1794-IF8IH

1794-IG16

1794-IH16

1794-IJ2

1794-IM16

1794-IM8

1794-IR8

1794-IRT8

1794-IT8

1794-IV16

1794-IV32

1794-0A16

1794-0A8

1794-0A8I

1794-OB16

1794-OB16D

1794-0B16P

1794-0B32P

1794-0B8

1794-0B8EP

1794-0C16

1794-0E12

1794-0E4

1794-0E4XT

1794-OE8H

1794-0F4I

1794-0F8IH

1794-OG16

1794-0M16

1794-0M8

1794-0V16

1794-OV16P1794-0V32

1794-OW8

1794-OW8XT

1794-PS13

Rockwell AB1794-IE12 Input Module New Original Package

With technological advancements, the functionality of this device has far exceeded the scope of logical control, hence today it is referred to as a Programmable Logic Controller, abbreviated as PLC. To avoid confusion with the abbreviation for Personal Computer, the term PLC is used. In 1968, General Motors (GM) in the United States, to accommodate the continuous updates of car models and the changing production processes, and to achieve small batch, diverse product production, hoped for a new type of industrial controller. This controller would minimize the need for redesigning and replacing electrical control systems and wiring, thereby reducing costs and shortening cycles. The design requirements at the time were to combine the advantages of both relays and computers: relay control systems were large, had low reliability, complex wiring, were not easily changed, and were difficult to troubleshoot and fault-find, with poor adaptability to changes in production processes, but were simple to understand and inexpensive; computers were powerful, flexible (programmable), and versatile, but programming was challenging; programming using a "natural language" that was process-oriented and problem-oriented made it easy for those unfamiliar with computers to quickly learn and use it. In 1969, Digital Equipment Corporation (DEC) developed the first PLC, which was successfully tested on the automated assembly line of General Motors in the United States.