Overview
The 6ES7461-3AA01-0AA0 is a Siemens SIMATIC S7-400 IM 461-3 receiver interface module used for distributed coupling of I/O racks over distances up to 102 m via the C-bus. It draws 0.1 W from the backplane and occupies a 25 mm slot in the rack.
This receiver module sits in a remote S7-400 expansion rack and communicates with a transmitter IM 461-3 at the central rack over a dedicated C-bus cable. The 102.25 m interface distance allows the expansion rack to be placed in a separate cabinet or across a production line while maintaining full backplane bus access for I/O modules.