Siemens 6ES7155-6AU01-0BN0 Programmable Logic Controller Module

Siemens' SIMATIC ET 200SP PROFINET interface module 6ES7155-6AU01-0BN0 (IM 155-6PN Standard) is the PROFINET interface card for the ET 200SP distributed I/O system. The package includes the server module 6ES7193-6PA00-0AA0 and supports single hot swap. In a single ET 200SP station, it accommodates up to 32 I/O modules and up to 16 ET 200AL modules, enabling scalable expansion for automation tasks without additional interface hardware. The device belongs to the IM 155-6 family and Siemens lists a successor model, 6ES7155-6AU02-0BN0, reflecting its ongoing product evolution. This configuration provides PROFINET connectivity with bundled server hardware in a modular, hot-swappable package suitable for integrating distributed I/O with centralized PLC logic in compact automation architectures.