Siemens 6ES7-142-1BD40-0XA0 Digital Input Output Module

Siemens SIMATIC ET 200X expansion module EM 142 DO 4xDC24V/2A (order number 6ES7 142-1BD40-0XA0) adds four digital outputs operating at 24 V DC to a SIMATIC ET 200X distributed I/O system. Each of the four channels is capable of switching up to 2 A, enabling direct control of loads such as relays, solenoids, or other 24 V devices from the PLC. The EM 142 is designed to extend digital output points within an ET 200X installation, supporting scalable expansion for automation tasks in compact control cabinets or distributed automation configurations. It complements other ET 200X modules—digital inputs, analog I/O, and interface modules—within Siemens' modular S7 automation portfolio, providing a clear path to increase I/O density without replacing existing hardware. Typical applications include discrete control of actuators on packaging lines, conveyors, machine tools, and other automation cells that require additional 24 V DC outputs. For exact specifications, reference the order number 6ES7 142-1BD40-0XA0 corresponding to EM 142 DO 4xDC24V/2A.