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I2T Serial Port Adapter - For I2T HMI Software connection

Written by Michael Cone

Updated at January 26th, 2026

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This is the wiring schematic for an I2T adapter. This adapter connects your computer's COM port to an I2T adapter serial port. The I2T serial port is an RJ-45 receptacle.

These images are of an RJ45 to DB9 adapter with the above wiring. The DB9 port is female to attach to a standard PC male port.

 

adapter interface

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  • Cable Spec 1 - RJ-45 to DB9 Female - "ST" or Straight Through adapter for all applications except for the CB-EL1 board
  • Cable Spec 2 - RJ-45 to DB 9 Female - "CO" or Cross Over adapter for all applications except for the CB-EL1 board

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