Omron CS1 Series 
​PLC Modules & Parts

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• Scalable Modular PLC — high-end system with CPUs, power supplies, I/O units, and expansion racks for large automation applications.
  
• Wide Range of Units — includes memory cards, CPU bus units (Ethernet, Profibus, serial), communication modules, remote I/O, and specialty cards.
  
• Flexible Mounting — DIN-rail bases, expansion cables, and termination resistors support distributed layouts and reliable operation.
  

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CPU / Base Units / CPU Racks / Backplanes / Power Supply

Category
CPU Units
CPU Units (High Performance)
CPU Rack / Backplane
Power Supply Units​

Model
​CS1G-CPU42H, CPU43H, CPU44H, CPU45H
CS1H-CPU63H, CPU64H, CPU65H
CS1W-BC@@@
CS1W-PA, CS1W-PD (various models)

Part Number
CS1G-CPU42H, CPU43H, CPU44H, CPU45H
CS1H-CPU63H, CPU64H, CPU65H
CS1W-B
CS1W-PA, CS1W-PD 

Description
Standard CPU units with different performance 
High performance CPU units (larger program capacity, speed)
Base backplane rack for mounting modules
Provides power to the PLC system

Basic I/O Units

Category
Digital Input Units
Digital Output Units

Model
​CS1W-ID211, ID231
CS1W-OD211, OD231, OD232

Part Number
​​CS1W-ID211, ID231
CS1W-OD211, OD231, OD232

Description
Digital input units, 24VDC or 100/240VAC inputs
Digital output units, relay or transistor outputs.etc

Analog / Process I/O Units

Category
Analog Input Units
Analog Output Units
Thermocouple / RTD Input 
Two-wire Transmission / Process 
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​

Model
​​CS1W-AD041, AD081, AD161 etc.
CS1W-DA041, DA08V, DA08C etc.
CS1W-PTS11, PTS51, 
​CS1W-PTW01; Power transducer 

Part Number
​​CS1W-AD041, AD081, AD161 
CS1W-DA041, DA08V, DA08C 
CS1W-PTS11, PTS51, 
​CS1W-PTW01

Description
Different resolution, ranges, isolated or Voltage, current output; analog control.
Temperature measurement.​

Special I/O / Function Modules

Category
​High-speed Counter Units
Position Control / Motion Control Units
Loop Control Boards / Special pieces
Serial / Communications Boards / Units
EtherNet / Ethernet / Fieldbus Units

Model
​​CS1W-CT021, CT041 
CS1W-NC113/213/413
CS1W-LCB01 
CS1W-SCU21 / SCU31; SCB  
CS1W-ETN21; CS1W-EIP21; Controller Link; DeviceNet; 

​Part Number
​​​CS1W-CT021, CT041 
CS1W-NC113/213/413
CS1W-LCB01 
CS1W-SCU21 / SCU31; SCB
​CS1W-ETN21;

Description
Counting pulses, fast digital signals.
For advanced motion / servo / pulse control
For PID / control loops etc.
For RS-232, RS-422, etc.
For network / communication with other PLCs 

Accessories / Other Modules

Category
Memory Cards
Expansion / Remote Racks
Bus Interface Units
Accessories / Termination​

Model
​​Memory Cards (CS1 series)
CS1W-BI, Expansion cables, Remote 
CPU Bus Units
DIN-Rail, Termination resistors​

​Part Number
CS1W-MC01, CS1W-MC02
CS1W-BI051
CS1W-CN118, CS1W-CN226
​CS1W-BC083, CS1W-BC093

Description
Memory cards for program/data backup
Expansion backplanes, remote I/O racks and cables
Interface/bus connection units for CPU bus
Accessories like mounting, termination, DIN-rail