Analog Devices Programmable Logic Controllers (PLCs) Solutions

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Industry PLC System Theory and Typical Architecture

Comprised of power supplies, CPUs, and multiple analog and digital I/O modules, a PLC system controls, actuates, and monitors complex machine variables. The PLC is designed for multiple inputs and outputs arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact.
A PLC system comprises power supplies, control and communication modules, and a variety of analog input, analog output, digital input, and digital output modules.

Total Solutions from ADI
•    Smaller, lower power, lower cost solutions
•    Feature industry-leading technologies and offer a range of design options
•    From implementation of discrete components to fully integrated solutions
•    Leverage ADI’s technology expertise for high resolution, low noise industry PLC systems

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The signal chain
The signal chains above are representative of a PLC application system. The technical requirements of the blocks vary, but the products listed in the table are representative of ADI’s solutions that meet some of those requirements.
Analog Input Analog Output Isolator Others
ADC
AD779x/AD7685/AD7192/AD7194/
AD7606/AD7606-4/AD7606-6/AD7176-2/ AD7173-8
AMP
ADA4096-4/ADA4096-2/AD8422/
AD8226/AD8275/AD8276/AD8475
Integrated Solution
ADuCM360/ADuCM361/ADuC7060/
ADuC7061
DAC
AD5683R/AD5660/AD5686/AD5684R/ AD5689R/AD5668/AD5628/AD5629R
Voltage/Current Driver
AD5750-2/AD5749/AD5748/ AD5750/
ADA4096-4/ADA4096-2
Integrated Solution
AD5420/AD5410/AD5422/AD5412/
AD5755/AD5735/AD5757/AD5737
HART
AD5700/AD5700-1
Light Power Isolator
ADuM540x/ADuM524x
Heavy Power Isolator
ADuM347x/ADuM3190
Data Isolator
ADuM140x/ADuM144x
ADuM128x/ADuM3481
Power Supply
ADP2441/ADP1720/ADP5070/ADP7182/ ADP2360/ADP1621
Comm Interface
ADM2587E/ADM2482E/ADM2490E/ ADM305x/ADM325xE/ADM3101E
Process Control Reference Circuit  
  CN0278:Isolated, 4-channel, thermocouple/RTD temperature measurement system with 0.5°C accuracy    
  CN0310:24-bit, 250 kSPS single-supply data acquisition system    
  CN0251:24-bit, 4.7 Hz, 4-channel, analog data acquisition system    
  CN0255:16-bit, 100 kSPS, single-supply, low power data acquisition system    
  CN0254:16-bit, 250 kSPS, 8-channel, single-supply, isolated data acquisition system    
  CN0325:PLC/DCS universal analog input using either 4-pin or 6-pin terminal block    
  CN0270:Complete 4 mA to 20 mA HART solution    
  CN0321:Fully isolated, single-channel voltage and 4 mA to 20 mA output with HART    
  CN0233:16-bit, isolated, industrial voltage and current output DAC with isolated DC-DC supplies    
 
More industry PLC applications and products information
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