RMG12.2-NNK11/00

The RMG12.2-NNK11/00 is a communication accessory developed by Bosch Rexroth Indramat for the RECO Drive Modules series. Within an automation rack, it acts as a protocol bridge, allowing controller data to reach distributed I/O without dedicated wiring changes. By occupying a single slot alongside drive electronics, it simplifies wiring and ensures that motion-control components receive timely bus updates during normal operation and during power transitions.

This unit is identified as a Gateway Module, meaning it translates fieldbus traffic between the local rack back-plane and an external network. A built-in Interruption-Free Automatic Changeover to Second Power Supply Unit maintains bus activity when the primary supply is removed, so connected devices remain deterministic. Network compatibility is defined by its INTERBUS designation; telegram framing, addressing, and cyclic update timing all follow the INTERBUS standard. The module is catalogued under the RECO family, which establishes uniform mechanical dimensions, connector orientation, and diagnostic LED positions for every slot-mounted component in the series.

When configured as a Remote BUS Slave Device it answers master queries, delivers status words from the drives, and forwards command words with no additional firmware licensing. The design heritage of Bosch Rexroth Indramat aligns its diagnostics with other motion products, so maintenance staff encounter identical alarm codes across the rack. Its mounting outline matches the RECO Drive Modules back-plane, allowing direct insertion without supplemental brackets. During brown-out events the internal relay steers current from the Second Power Supply Unit; this seamless hand-over works in tandem with the same relay logic that governs Automatic Changeover of logic and sensor circuits, preventing communication gaps that could otherwise stall axes or trigger unwanted stops.