RECO-PC-104 B2 LK IBS03

The RECO-PC-104 B2 LK IBS03 is a plug-in communication card manufactured by Bosch Rexroth Indramat for the RECO Drive Modules series. The board installs on a PC/104 stack inside a drive controller and links the motion system to an Interbus field network. This connection allows cyclic control words and diagnostic information to travel between higher-level PLCs and individual axes in automated machinery.

The board appears on the network as an Interbus slave, meaning it occupies a fixed time slot and responds to telegrams sent by the ring master. On the controller side, it connects to the PC/104 bus, which also supplies its 5 V logic power, so no separate power wiring is needed. Front-panel diagnostics are handled by 8 LEDs that indicate bus status, data flow, and watchdog activity. During each transfer cycle, the module can accept and produce up to 16 words per direction, allowing a drive to exchange velocity, torque, and auxiliary process data without overloading the ring bandwidth. Field wiring enters through a shielded 9-pin D-Sub connector that follows the DIN E 19258 mechanical outline, and an identical socket passes signals to the next node. If communication is lost, the freeze-last-data option holds the previous output image until control is restored.

Input and output data outside the cyclic channel are carried in a PCP mailbox with a buffer capacity of 240 bytes, while two reserved words support device identification. Frames are transmitted over the RS-485 duplex physical layer, and protocol handling conforms to PCP 2.0. The link uses a galvanically isolated transceiver to separate it electrically from the logic domain and prevent ground loops between drive cabinets. Four upload arrays allow the host to collect extended parameter blocks, while a continuously running watchdog supervises internal processing and bus timing. All core functions draw power directly from the host backplane, so the card does not require an external power supply.