CAInstruments is remaining open for business as usual.


The transportation industry and its suppliers are considered essential services and continue to operate amidst the COVID-19 outbreak.

As such a supplier, we will continue providing products and services to all of our customers.


TMTCDL39

CAT Data Link to J1939 Converter




Need Help? CAI Provides No-cost Technical Support for the Lifetime of the Product.


  • Supports all Caterpillar engines with the CAT Data Link protocol.
  • Factory configured for plug and play installation.
  • Translates a wide variety of engine and transmission information.
  • Translates active and inactive diagnostic trouble codes.
  • Custom programming available. Contact us for more information.
N2K Translator - Caterpillar CDL to J1939 Converter
How to Buy






  • Scan the CDL databus for a complete list of available devices and parameters.
  • Diagnose communication problems.
  • Browse historical log information including databus errors, trouble codes and more.
  • Upgrade the TMTCDL39 in the field.