What it is and what it does
The Siemens 6ES7460-0AA00-0AB0 is a SIMATIC S7-400 IM460-0 transmitter interface module designed for centralized connection without PS transmission via the K bus. Its role in an S7-400 rack is to serve as the transmitting interface for the K bus, enabling communication between the central controller and expansion units in a centralized topology, where the power supply is not transmitted over the bus. This module is intended for use in a SIMATIC S7-400 rack, typically in a control cabinet or panel, where it connects to a corresponding receiver interface module (IM461) in an expansion rack.
Lifecycle and sourcing reality
This part carries a lifecycle stage of mature, meaning it is an established product that remains in the portfolio but is no longer the focus of active development.
Integration considerations
The IM460-0 mounts directly into an S7-400 rack, occupying one slot. It communicates over the K bus with the central controller and drives the connecting cable to the expansion rack's IM461-0. Because this is the version without PS transmission, the expansion rack requires its own power supply module; the K bus carries only data and not 5 VDC or 24 VDC for the expansion rack's backplane.