Siemens 6ES7155-6AU30-0CN0 SIMATIC ET 200SP IM155-6PN/3 HF PROFINET Remote I/O Interface Module

The Siemens 6ES7155-6AU30-0CN0 SIMATIC ET 200SP interface module IM 155-6PN/3 High Feature connects a PROFINET IO Controller to up to 64 ET 200SP I/O modules plus 16 ET 200AL modules through its integrated 3-port switch. It supports PROFINET system redundancy (S2), multi-hot swapping of modules during operation, and isochronous mode down to a 250 µs bus cycle for motion-critical applications.

Technical Specifications

Selection Notes

The 3-port integrated switch and PROFINET system redundancy (S2) support are the deciding factors over the base IM 155-6 PN ST/BA variants: S2 redundancy keeps the station on the bus if one PROFINET ring path fails, relevant on machines where an I/O dropout stops production. Multi-hot swapping lets individual I/O modules be replaced without powering down the whole station, useful on lines that can't tolerate a full station restart. The 288-byte-per-module / 1440-byte-per-station address space caps how many high-channel-count analog or safety modules can sit behind a single IM — large stations may need to split across two interface modules.

Applications

PROFINET head-end for ET 200SP distributed I/O stations on machines and plants needing ring/S2 network redundancy, hot-swap maintenance, or isochronous synchronization with motion control.