SmartRail I/O CANopen Base

Brand: Horner

SmartRail I/O is a real-time, modular I/O system – expanding the application of the OCS family of all-in-one controllers. 

The SmartRail I/O CANopen Base (COS100) utilizes CANopen communications for the I/O connection with the OCS. 

The highly efficient, and highly reliable nature of CANopen allows a significant amount of I/O to be added while maintaining fast I/O updates. 

Any modern OCS Controller with a CAN port can utilize COS100 Base units. 

Each COS100 base can support up to 8 SmartRail I/O modules – addressed with up to 256 digital I/O and 32 Analog I/O per base. 

The maximum number of bases supported by an OCS controller is currently 16. 

Modules can be added either before or after the CNX100 base has been installed on the DIN-rail. 

The COS100 network wiring is typically a daisy-chain architecture, although trunkline-dropline architectures are also supported. 

Entire bases of I/O may be hot-swapped to/from the CANopen network, but individual I/O modules may not be hot-swapped on the base. 

SmartRail I/O is not complex to configure – it utilizes Cscape (9.4 or later) in an easy, straightforward process.



Approvals & Certifications

  • CE
  • UL


  • 5-Pin Removable Terminal Block


  • Relative Humidity: 5 to 95% Non-Condensing


  • Wire Stripping Length: 0.28" (7 mm)


  • DIN Rail
  • Terminal Typical: M3 Screw Typical, Removable

Operating Temperature

  • -5° to 50° C (23° to 122° F)

Output Power

  • 1,500 mA at 5 Vdc


  • Output Power: 1,500 mA at 5 Vdc
  • Primary Power Range: 11-28 Vdc

Power Requirement

  • Steady State: 400 mA at 24 Vdc, Maximum

Power Supply

  • Power Supplied for I/O Modules: 1,500 mA at 5 Vdc, Maximum

Storage Temperature

  • -40° to 75° C (-40° to 167° F)


  • Terminal Torque Rating: 0.6 Nm (5.2 In/Lbs)

Version / Leadwires

  • Accepted Wire Size: 14 to 26 AWG (Copper)

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