Siemens AG 6ES7 350-1AH03-0AE0 Counter Module

The Siemens 6ES7350-1AH03-0AE0 FM350-1 Counter Module for SIMATIC S7-300 is a dedicated, single‑channel high‑speed counter designed to process pulses from incremental encoders. It accepts 5 V or 24 V encoder signals and can count events up to 500 kHz, making it suitable for fast feedback tasks on conveyors, motors, and other automation equipment. Designed for mounting on the S7-300 backplane, the FM350‑1 supports isochronous mode for precise timing consistency and includes measuring range types with a configuration package on CD to tailor setup for specific applications. This 6ES7350‑1AH03‑0AE0 unit corresponds to the FM350‑1 family, delivering reliable one‑channel counting with encoder compatibility across common logic levels while remaining compatible with legacy Siemens S7‑300 systems. Typical use cases include counting encoder pulses for position or speed monitoring, event counting in manufacturing processes, and interfacing with external encoders where accurate, high‑frequency counting is required. The module is commonly deployed in older Siemens installations needing a compact, dedicated counter input, providing a straightforward option within the FM350 line for high‑speed pulse counting with 5 V and 24 V encoders.