What This Module Handles
The Siemens 6ES7171-1AA01-0AA0 is an ET 200S interface module that connects the distributed I/O station to a PROFIBUS DP network. It runs at up to 12 Mbit/s, making it the bus master's connection point for the remote I/O rack. Powered from a 230 V AC feed, it draws 35 W while serving the backplane bus and power modules listed as connectable (LA724I types). Recovery after power failure is 1 s typical; the module holds state across 20 ms dips.
Mounting and Environment Checks
Mount vertically using the screw lugs at top and bottom — no DIN-rail clip. The module is 50 mm wide, 480 mm tall, and 210 mm deep, so plan for that footprint in the panel. Rated IP20, so keep it inside a clean enclosure.
Lifecycle and Sourcing Picture
Compliance documentation includes KC approval, China RoHS, and EAC. The PROFIBUS DP interface uses a 9-pin sub-D socket; transmission rate set to 12 Mbit/s out of the box works with most DP masters.