Digital Adapters / SC-CPI
SC-CPI Datalogger-to-CPI Interface
Data Logger to CDM Bridge
Synchronized high-speed measurements
weather applications water applications energy applications gas flux and turbulence applications infrastructure applications soil applications


The SC-CPI adds CPI bus functionality to your CR800, CR850, CR1000, and CR3000 dataloggers, which is necessary for them to connect to the CDM (Campbell Distributed Module) devices and other CPI-enabled sensors. The SC-CPI connects to the data logger using the C1, C2, and C3 ports.

The SC-CPI is not required for, or supported by, data loggers with a native CPI interface. Campbell Scientific strongly recommends that CDMs be connected to data loggers with a native CPI interface, such as the CR6.

Benefits and Features

  • Enables a CR800, CR850 CR1000, or CR3000 to be part of a CPI/CDM network
  • Provides detailed CPI communication diagnostics
  • Supports monitoring of the serial or CPI load
  • Indicates if CPI frame errors occur
  • Provides information about each CPI module that it detects in its network


SC-CPI shown with connector and 29526 cable attached (a Ships With item)
SC-CPI shown with connector and 29526 cable attached (a Ships With item)
SC-CPI shown with connector and 29526 cable attached (a Ships With item)


Temperature Range
  • -25° to +50°C (standard)
  • -55° to +85°C (extended)
Current Drain 50 mA (active)
Dimensions 15.94 x 7.49 x 3.18 cm (6.28 x 2.95 x 1.25 in.) including ground lug
Weight 0.188 kg (0.415 lb)


Serial Connect to Data Logger Screw terminal
Computer Configuration via Device Configuration Utility USB


Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
CR1000 (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR295X (retired)
CR3000 (retired)
CR800 (retired)
CR850 (retired)
CR9000X (retired)

Additional Compatibility Information

Data Logger Considerations

A 5-conductor cable connects the data logger to the SC-CPI, and an Ethernet cable connects the SC-CPI to the CDM.

The data logger operating system must be version OS 26.


SC-CPI OS v.04 (477 KB) 10-10-2016

Execution of this download installs the SC-CPI Operating System on your computer for upload to the SC-CPI device with Device Configuration Utility.

Note: The SC-CPI OS V.02 or greater is required to use the CDM-VW300/305 with the CR3000/1000/800 datalogger that is using OS 28 or higher.  The CDM-VW300/305 Operating System will also need to be upgraded to CDM-VW300/305 OS V.02.  If using a CR3000/1000/800 datalogger with an older OS, an operating system upgrade to the datalogger will be required.

View Update History

Frequently Asked Questions

Number of FAQs related to SC-CPI: 2

  1. To communicate with CDM devices using the CPI protocol, the CR3000, CR1000, CR850, and CR800 dataloggers require an SC-CPI device. Only one SC-CPI device per data logger is required. It is expected that the design of future Campbell Scientific data logger products will work with CPI-based modules directly.

  2. The communications protocol used by CDM devices is the CAN Peripheral Interface (CPI), which includes methods that are proprietary to Campbell Scientific.

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