Siemens 6ES7155-6AU00-0HM0 ET 200SP IM 155-6 PN R1 PROFINET Interface Module

The Siemens 6ES7155-6AU00-0HM0 is a SIMATIC ET 200SP PROFINET interface module (IM 155-6 PN R1) built for PROFINET system redundancy (R1), supporting up to 64 I/O modules with multi-hot-swap and a 1 ms system cycle for redundancy synchronization. It runs from 24 V DC through a 2-port BusAdapter slot and supports PROFINET Security Class 1.

Technical Specifications

Selection Notes

The R1 suffix marks this as the PROFINET system-redundancy variant of the ET 200SP interface module, keeping a station running when one of two redundant PROFINET paths fails - pick it over a standard IM 155-6 PN when the line needs controller-level redundancy, not just media-redundant cabling. Multi-hot-swap lets individual I/O modules be replaced while all 64 module slots stay in RUN, and PROFINET Security Class 1 adds signed firmware updates and data-integrity checks against unauthorized configuration changes. The BusAdapter for the physical PROFINET ports is ordered separately and must match the plant's copper or fiber cabling.

Applications

Head module for redundant SIMATIC ET 200SP stations on process or high-availability machine lines where a PROFINET path fault must not interrupt up to 64 I/O modules.