RECO-PC-104 L2 LK CNS01

The RECO-PC-104 L2 LK CNS01 is a communication module produced by Bosch Rexroth Indramat within the RECO Drive Modules series. Installed on a PC-104 stack, it supplies a ControlNet link so RECO motion controllers can exchange real-time data with higher-level automation networks. The card occupies a single backplane slot and serves as a gateway between the drive’s dual-port local memory and the ControlNet fieldbus, enabling cyclic control words, parameter transfers, and diagnostic requests in industrial automation lines.

The module uses ControlNet for fieldbus communication and operates strictly as a slave node that responds to scheduled and unscheduled traffic. Two coaxial channels provide primary and secondary trunks that improve network availability. These ports support redundant A/B operation and terminate in BNC connectors for direct tap insertion. Network communication operates at 5 MBaud, matching the standard ControlNet bandwidth for deterministic data exchange. The galvanically isolated signal paths prevent ground loops between the fieldbus and the controller circuitry. Acyclic messaging is handled through the UCMM service. Cyclic process data is placed in dual-port memory so the PPC can read or write data without bus contention.

Up to 32 words of process data cross the bus during each scan, and parameter structures can reach 128 bytes for larger configuration sets. Four upload or download arrays are available, allowing connected tools to transfer parameter files or collect trend data without halting motion tasks. Status information is displayed by four front-panel LEDs, while extended diagnostic access is available through a NAP RJ45 port that communicates with an RS422 channel. The card follows the PC-104 mounting pattern, allowing it to stack securely with RECO processors and I/O modules in compact drive cabinets. Its single-slot format preserves space for other communication, processing, or input and output cards within the controller assembly. The direct memory interface also separates local processor access from fieldbus activity, helping cyclic data remain available to the motion controller while acyclic requests are processed.