Schneider Electric 140ESI06210 ASCII Serial Link-I Module

The Schneider Electric 140ESI06210 ASCII Serial Link-I Module is a two-port ASCII serial interface for the Modicon Quantum automation platform, providing two RS-232C ports to communicate with peripheral devices. It enables simple point-to-point ASCII communication with third-party equipment—printers, barcode readers, meters, or weighing scales—via a resident command interpreter that defines port formats and baud rates and stores ASCII message formats directly in the module. End of commercialization was announced on September 24, 2024, with end-of-service planned for March 31, 2027, and Schneider Electric identifies BMXNOM0200 as a replacement offering two RS-485/RS-232 ports in Modbus and character mode. This module is typically used with Modicon Quantum CPUs (such as the 140CPU family) to extend serial communications within the control system.