RMG12.2-NN1

The RMG12.2-NN1 is a communications accessory produced by Bosch Rexroth Indramat for the RECO Drive Modules series. It is supplied as a gateway component intended to sit in the rack with power supply and controller sections, where it mediates data between higher-level control networks and individual drive modules. Within an automation cell, the unit’s purpose is to convert bus traffic so that motion controllers, inverters, and safety relays exchange status and command information without protocol conflicts.

This device is classified as a Gateway Module, so it provides protocol translation between dissimilar buses without adding motion control logic of its own. Its internal circuitry is designed for the INTERBUS protocol, meaning telegram timing, address structure, and diagnostic codes follow that serial standard. When configured as a Remote BUS Slave Device, the module occupies a subordinate position on the network and responds to cyclic calls from the scanner while forwarding data to the local drive backplane. A built-in safeguard, described as Interruption-Free Automatic Changeover to Second Power Supply Unit, switches input lines in less than one cycle when the primary 24 V rail collapses, preventing gateway resets during maintenance or fault events. Support for remote bus, local backplane, and power lines are all routed through a shielded edge connector that preserves signal integrity on a high-speed fieldbus.

These design choices allow the module to integrate seamlessly with other hardware in the RECO racks while maintaining the deterministic timing demanded by motion loops. By sourcing the part from Bosch Rexroth Indramat, system builders can match mechanical fit and firmware versions across multiple stations. Because it belongs to the same family of Drive Modules, wiring harnesses and configuration tools remain uniform, shortening commissioning time. The automatic switchover creates a live redundant supply path, which keeps diagnostics active and prevents communication gaps that might otherwise trigger uncontrolled drive shutdowns.