Schneider Electric 140NOM21200 Industrial Relay Module

The Schneider Electric 140NOM21200 is a DIO head-end adaptor for the Modicon Quantum automation platform, providing a digital I/O interface that connects field devices to the Quantum controller over Modbus networks. It includes two Modbus Plus RS485 twisted-pair ports with redundancy and a single Modbus RS232 twisted-pair port for serial connectivity, supporting data transmission up to 1 Mbit/s. The module offers 30 input words and 32 output words and consumes about 4 watts of power during operation. Designed for interoperability within the Modicon Quantum ecosystem, the 140NOM21200 works with modules such as the 140CRA21210 and 140CRA21220 to enable scalable distributed I/O across automation networks. Typical applications include distributed digital control, remote I/O expansion, and machine-level automation where reliable Modbus communication to digital devices is required.