Siemens 6ES7155-6AU00-0DN0 Interface Module. Siemens 6ES7155-6AU00-0DN0 is the exact manufacturer order number for a interface module in the SIMATIC ET 200 Distributed I/O portfolio. Siemens describes this exact reference as: SIMATIC ET 200SP, PROFINET interface module IM155-6PN High Speed max. 30 I/O modules, 0.125 ms isochronous mode Multi-hotswap, incl. server module. The verified manufacturer lifecycle record is PM300: Active Product.