Siemens 6ES7155-6AR01-0AN0 Interface Module. Siemens 6ES7155-6AR01-0AN0 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 IM 155-6 PN Basic, max. 16 I/O modules, 2x integrated RJ45 sockets PN security class 1 including server module ( 6ES7193-6PA00-0AA0 ). The verified manufacturer lifecycle record is PM300: Active Product.