The Siemens 6AG1155-6AU00-4CN0 is a PROFINET IO device for the ET 200AL distributed I/O system. Two copper ports with an integrated switch support IRT with high performance: frame resolutions from 250 µs to 4 ms in 125 µs steps, jitter held to 1 µs. That qualifies the module for isochronous motion control loops and high‑speed fault isolation. MRP and MRPD client modes enable ring redundancy with up to 50 or 30 devices respectively. Rated for 24 V DC, typical power draw is 2.4 W. Inrush current peaks at 4.5 A max; the I2t rating of 0.09 A²·s should be factored when sizing the supply circuit breaker. Dimensions 117 mm × 50 mm × 74 mm (without BusAdapter) – standard ET 200AL DIN‑rail footprint.
Integration Notes
Mounts on DIN rail in the ET 200AL system; the BusAdapter (ordered separately) determines the physical connection. Autocrossing and autonegotiation are enabled – no crossover cables needed. Supports prioritized startup, shared device, and PROFIenergy for coordinated power‑down phases. Diagnostic functions, alarms, and I&M data (I&M0 to I&M4) ease asset tracking and fault localization.