Product profile
The Siemens 6ES7155-6AU00-0HM0 is a PROFINET IO Device for the ET 200SP distributed I/O system, equipped with an integrated 2-port switch and supporting Media Redundancy Protocol (MRP). It operates on a 24 V DC supply with a typical power loss of 2.4 W and ships with firmware V6.0. Notable limitations for selection: IRT (Isochronous Real-Time) is not supported, so this module is best suited for standard PROFINET applications rather than motion control with strict timing. The listed I2t of 0.36 A²·s gives the inrush energy let-through for power supply fusing coordination.
Firmware V6.0 is the current release, ensuring compatibility with recent TIA Portal versions and IO controllers. Identification data (I&M0 to I&M3) is supported for asset tracking.
Key protocol and diagnostic features
Supports MRP (Media Redundancy Protocol) for ring topology failover, but not MRPD (Media Redundancy for Planned Duplication). Shared device is not available; each module serves a single IO controller. LLDP and SNMP are enabled for network management. Autocrossing and autonegotiation on the Ethernet ports simplify cabling. Diagnostics, alarms, and status indicators are standard.