The ET‑200S interface module is the central communication hub for the modular ET‑200S distributed I/O system. It connects up to 63 I/O, power, and technology modules to a fieldbus (PROFIBUS DP or PROFINET) and optionally functions as a stand-alone PLC.
- IM 151‑Basic – Standard PROFIBUS DP slave interface
- IM 151‑CPU – Includes embedded CPU functionality, allowing local logic execution and stand-alone operation
- IM 151‑PN – PROFINET IO interface for Ethernet-based networking
- IM 151‑FO – Fiber-optic PROFIBUS variant, suited for EMC-sensitive or long-distance use
- Distributed signal processing in manufacturing lines, machine controls, or remote installations
- Replacement or retrofit of central I/O systems with modular flexibility
- Localized control with embedded CPU for simple logic or safety tasks
- Fibre-optic variant for EMC-critical environments or extended cable runs
