Siemens 6ES7155-6AU01-0BN0 Analog Input Module

Siemens 6ES7155-6AU01-0BN0 is the IM 155-6 PN ST PROFINET interface module for the SIMATIC ET 200SP remote I/O system. It provides the network bridge between ET 200SP I/O modules and a PROFINET network, enabling hot-swappable operation and synchronized communications in isochronous mode for motion-related or timing-critical applications. The module supports up to 32 I/O modules per station (and up to 16 ET 200AL modules in the same configuration), making it a scalable solution for expanding automation I/O on a single PROFINET network. It runs from a 24 V DC supply (acceptable range 19.2–28.8 V DC) with mains buffering of about 10 ms and allocates 256 bytes of address space per input/output for efficient data exchange. The PROFINET interface operates at 100 Mbit/s full duplex and is configurable via standard Siemens engineering environments (GSD/STEP 7 or TIA Portal workflows). In lifecycle terms, Siemens lists a successor, 6ES7155-6AU02-0BN0, positioning this module within the ET 200SP PN interface family. This component is typically used to connect field I/O to a PLC over PROFINET, delivering reliable signal transfer and flexible topology within Siemens automation architectures.