Siemens, probably, the biggest name in the world of automation. Siemens manufactures a PLC product named Simatic PLC. It offers a various range of products such as,

• Simatic LOGO PLC
• Simatic S7-1200 Series PLC System
• Simatic S7-300 Series PLC System
• Simatic S7-400 Series PLC System
• Simatic S7-1500 Series PLC System

Siemens offers a service in various sectors, such as

• Industrial Automation
• Building Technology
• Drive Technology
• Energy
• Mobility
• Gas and Power
• Software
• Financial Services

Rockwell Automation (Allen Bradley)

Allen Bradley is another name, that is popular in the automation sector. Allen Bradley offers a large range of PLC products, such as

• Allen Bradley MicroLogix PLC System
• Allen Bradley CompactLogix PLC System
• Allen Bradley ControlLogix PLC System

Rockwell Automation provides services in various sectors such as,

• PLC Systems
• Instrumentation
• Drives
• Motors
• Actuators
• HMI(Human Machine Interface)
• Safety Components
• Software

ABB

ABB is also a well-known PLC manufacturer company. ABB offers a small to large scale PLC system. The series of ABB PLC system are such as,

• ABB AC500 PLC System
• ABB AC500-eCo PLC System
• ABB AC500-S Safety PLC System
• ABB AC500-XC Extreme Conditions PLC System

The services the ABB mainly focuses on,

• Energy-Related Products
• Drives
• High-Voltage Products
• Medium-Voltage Products
• Low-Voltage Products
• Measurement and Analytics
• Power Transmission Lines

Schneider Electric

Schneider Electric is an MNC based company, that is located in France. The company mainly focuses its services on two main sectors:

• Energy Management
• Industrial Automation Sector

There are various range of PLC products, Schneider Electrics have, such as

• Schneider Modicon M221 PLC
• Schneider Modicon M241 PLC
• Schneider Modicon M251 PLC
• Schneider Modicon M258 PLC
• Schneider Modicon Momentum Series PLC
• Schneider Modicon Premium Series PLC
• Schneider Modicon Quantum Series PLC

Mitsubishi Electric

Mitsubishi Electric is a Japanese MNC company that provides various electrical and electronics products. It offers a large range of products and services especially in,

• Energy and Electric Systems
• Industrial Automation Systems
• Information and Communication Systems
• Electronics Devices
• Home Appliances

The PLC products range of Mitsubishi Electric are,

• Mitsubishi MELSEC iQ-F Compact Series
• Mitsubishi  MELSEC-F Compact Series
• Mitsubishi  MELSEC-L Standard Series
• Mitsubishi  MELSEC iQ-R Series
• Mitsubishi  MELSEC-Q Series

Omron

Omron is a global electronics company based in Japan. Omron is mainly focusing on the following sectors, such as:

• Industrial Automation
• Electronics and Mechanical Components
• Automotive Electronic Components
• Healthcare

Omron has a large range of PLC products, such as,

• Omron CP Compact PLC
• Omron CJ Module PLC
• Omron CS Rack PLC

Emerson

Emerson is a US-based organization. We will find Emerson mainly in the Instrumentation sectors. The company is offering its services mainly on,

• Measurement Instrumentation
• Valves, Actuators, and Regulators
• Fluid Control and Pneumatics
• Control and Safety Systems
• Electrical Components and Lighting
• Welding, Assembly, and Cleaning
• Heating and Air Conditioning
• Home Products