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What is Data Acquisition Card? To measure signals and transfer data to the computer is done by using Data Acquisition Cards, commercially called DAQ cards. These cards have Analog / Digital Converters (ADC) and Digital / Analog Converters (DAC) that allow the input/output…
PC / AT Bus is used on computers that are compatible with IBM earlier, to connect peripheral equipment such as disk drives, sound cards and more to the computer motherboard. PCI Buses that are used on computers that are compatible not only…
The Data Highway and Data Highway plus systems are Local Area Networks (LANs). They connect programmable controllers, computers, and other devices so they can communicate and exchange data with one another. A cable system is the physical means of transmitting this data…
Profibus ProfiBus (PROcess FIeld BUS) is a widely accepted international networking standard, commonly found in process control and in large assembly and material handling machines. It supports single-cable wiring of multi-input sensor blocks, pneumatic valves, complex intelligent devices, smaller sub-networks (such as…
Industrial Ethernet Early Ethernet systems (of the 10 Mbps variety) use the CSMA/CD access method. This gives a system that operates with little delay if lightly loaded, but becomes very slow if heavily loaded. Ethernet network interface cards are relatively cheap and…
Fiber Optics Fiber optic communication uses light signals guided through a fiber core. Fiber optic cables act as wave guides for light, with all the energy guided through the central core of the cable. The light is guided due to the presence…
Introduction Modbus is a serial master/slave protocol. Modbus can run over any serial type media (copper, fiber, wireless, modem, etc..) Modbus Plus is a peer-to-peer protocol which runs at 1 mbs. The Modbus Plus protocol specifies the software layer as well as…
Introduction In this session we are gonna discuss about Difference between AS-I and DeviceNet .before reading this just go through An overview of industrial communication network so you will get a brief idea about other communication protocols AS-i Actuator Sensor-interface is an open system network developed…
What is OPC? OPC means “Open process control” or “Open platform communications” It is a standard that defines data communication between devices from different manufacturers .It Requires an OPC server to communicate with OPC clients .OPC allows “plug and play”, provides benefits as it reduces…
Antennas are vital devices in wireless communication. An antenna is an interface between radio waves that propagate through space and electrical currents that move in metal conductors, which are used with a transmitter or receiver. Basic antenna circuit: Antennas are basically tank…