Product Description:

The CML85.1-3P-705-FA-NNNN-NW is a control main unit produced by Bosch Rexroth Indramat within the CML IndraControl Hardware series. It serves as the central processor in an automation cabinet. In operation, it coordinates motion, I/O, and communication tasks for distributed drives and sensors on the plant floor. It also supplies deterministic program execution and diagnostic data to supervisory systems. This central role lets the controller handle control logic and network traffic from one cabinet location.

Computation is handled by an Intel Core 2 Duo processor clocked at 1.2 GHz, giving the controller the cycle time needed for medium-size PLC applications and embedded HMI tasks. Standard volatile storage is expanded beyond the base footprint. The unit ships with 1024 MB of DRAM, while the board retains a 256 MB base bank for additional program and data storage. This arrangement supports larger user programs and buffering without paging to flash. Fast task variables and system tables reside in dedicated 16 MB of SRAM, reducing access latency for real-time loops. These memory resources support IEC 61131-3 logic, background diagnostics, and fieldbus handling without external modules.

For networked machinery, a built-in PROFIBUS interface exchanges 12-Mbit cyclic data with drives and remote I/O, eliminating add-on master cards. Thermal loading generated by the dual-core CPU is managed by fan cooling, so the carrier can be installed in sealed cabinets while meeting ambient temperature limits. The inline housing profile aligns all field and service connectors on a single edge, supporting side-by-side rail mounting, short cable runs, and easier access from the cabinet front. This layout also keeps service access concentrated along one side of the unit. The unit uses CPU design variant 1, which matches the electrical backplane pinout used by Rexroth expansion slices. No NVRAM is fitted, so retention depends on flash storage and battery-buffered real-time clock data.