Siemens 6ES7 274-1XH00-0XA0 Input Simulator Module

Siemens 6ES7 274-1XH00-0XA0 Input Simulator Module is a SIMATIC S7-200 accessory that emulates 14 discrete DC input signals for the CPU 214 series. Designed to simulate 24V DC inputs, this SIM274 module provides a bank of digital inputs that can be individually toggled to generate test conditions for ladder logic, timing diagrams, and input-handling workflows without live field wiring. It is used to validate program logic under different input scenarios, diagnose rung wiring, and speed up commissioning by reproducing sensor states and fault conditions in a controlled environment. As part of the SIM274 family, the module integrates with S7-200 controllers via the standard interface used for digital input simulation and is specifically intended for CPUs that manage DC input modules. The official order number to reference for procurement is 6ES7 274-1XH00-0XA0, confirming its role as a dedicated input simulation device for DC input channels on the S7-200 platform. This accessory is well-suited for development labs, training facilities, and service environments where real input hardware may be unavailable or impractical, providing a repeatable, isolated means to exercise input processing and verify PLC programs.