Bosch Rexroth CLM01.4-N-E-2-B-FW FWA-CLM1.4-LA1-01V06-MS Motion Control Module – CLM Series

Bosch Rexroth CLM01.4-N-E-2-B-FW / FWA-CLM1.4-LA1-01V06-MS — Single-Axis Compact Logic Module for Deterministic Servo Positioning

The CLM01.4-N-E-2-B-FW is a single-axis positioning control module from Bosch Rexroth’s Compact Logic Module (CLM) Generation 1.4 platform. Paired with firmware FWA-CLM1.4-LA1-01V06-MS (LA1 application class, version V06, MultiSingle configuration), this unit executes closed-loop position control, cam profile interpolation, and synchronization tasks entirely within its onboard DSP — offloading the host PLC from real-time motion computation. It is the standard hardware choice for SERCOS II-based single-axis machine tool and transfer line architectures where deterministic cycle times below 1 ms are mandatory.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The CLM01.4 architecture centers on a fixed-point DSP executing the position control loop at the SERCOS interpolation cycle boundary. The -N- designator in the part number confirms the standard (non-safety) control path, while the -E- designator identifies the European voltage variant. The -B- suffix denotes the standard backplane connector pinout compatible with the IndraControl L/V rack family.

SERCOS II Ring Topology and Jitter Suppression: The module acts as a SERCOS master, transmitting MDT (Master Data Telegram) and AT (Amplifier Telegram) frames over a fiber optic ring at a fixed cycle period. Hardware-level phase-locked loop (PLL) circuitry on the SERCOS ASIC synchronizes the interpolation interrupt to the ring telegram with a jitter budget of <1 µs — a prerequisite for multi-axis electronic gearing without mechanical coupling.

EMC Design: The PCB layout isolates the 24 VDC logic supply plane from the I/O signal plane using a split ground pour with a single-point star connection at the chassis terminal. All digital inputs pass through RC low-pass filters (τ ≈ 1 ms) before reaching the input latch, suppressing conducted transients per IEC 61000-4-4 (EFT/Burst, 2 kV). The fiber optic SERCOS interface provides galvanic isolation between the CLM and the drive amplifiers, eliminating ground loop interference paths common in copper-based motion buses.

Firmware LA1 Application Class: The LA1 firmware implements a full IEC 61131-3 structured text execution environment alongside the motion kernel. The V06 release introduced improved cam table interpolation (linear and cubic spline modes) and extended the synchronization object set to support electronic cam coupling with phase offset correction — relevant for printing and packaging applications where registration accuracy is measured in tenths of a millimeter at line speeds above 200 m/min.

Battery-Backed Retain Memory: A lithium cell maintains the SRAM retain area (user-defined variables, cam tables, homing offsets) through power cycles. The battery life is rated at 5 years at 40 °C ambient. A diagnostic bit in the status word flags low battery voltage before data integrity is compromised, allowing planned maintenance without unscheduled downtime.

Watchdog and Safe State Logic: An independent hardware watchdog timer monitors the DSP task scheduler. If the motion kernel fails to reset the watchdog within the configured timeout (default 20 ms), the module drives all digital outputs to the de-energized state and asserts a fault signal on the SERCOS ring, triggering coordinated drive disable across all ring participants within one interpolation cycle.

System Integration Benefits

• Deterministic real-time response: SERCOS II synchronization constrains axis-to-axis timing deviation to <1 µs, enabling electronic gearing and cam coupling without mechanical transmission elements.
• Host PLC offload: All position loop computation executes on the CLM’s onboard DSP; the host PLC exchanges setpoints and status via PROFIBUS at a coarser cycle (typically 10–20 ms), freeing PLC scan time for logic and HMI tasks.
• Scalable axis count: A single SERCOS ring can address up to 254 drives. The CLM01.4 master can coordinate additional slave axes (HCS, HMD, DKC drives) without additional motion controllers, reducing cabinet footprint.
• Transparent diagnostics: The module exposes 32 SERCOS IDN diagnostic parameters readable via IndraWorks or any PROFIBUS master. Fault codes include axis-level position error, encoder signal quality, and drive communication loss — each with timestamp resolution of one interpolation cycle.
• Firmware field-upgradeability: Firmware updates are applied via the RS-232 service port using Rexroth’s DriveTop utility without removing the module from the rack, minimizing maintenance window duration.
• Cam profile flexibility: Up to 256 cam table entries per axis, supporting both linear and cubic spline interpolation modes. Tables are stored in battery-backed SRAM and survive power cycles without re-download from the host.
• Homing sequence autonomy: The module executes reference travel sequences (limit switch, zero pulse, or absolute encoder reference) independently of the host PLC, reducing homing cycle time and eliminating PLC scan-time dependency on homing completion.
• Cross-platform interoperability: PROFIBUS-DP interface allows integration with Siemens S7-300/400, Beckhoff CX series, and other PROFIBUS masters without gateway hardware, protecting existing PLC investments during machine upgrades.

Quality Assurance & Global Logistics

Every CLM01.4-N-E-2-B-FW unit supplied by siemensplc.com is sourced through verified industrial distribution channels with full part traceability to Bosch Rexroth AG manufacturing records. Prior to shipment, each module undergoes a functional verification sequence: 24 VDC power-on self-test, SERCOS ring loopback check, I/O point actuation, and firmware version confirmation against the order specification (FWA-CLM1.4-LA1-01V06-MS). Units are packed in anti-static ESD bags with desiccant, placed in foam-lined cartons rated for air freight vibration per ISTA 2A.

Logistics operations are based in Xiamen, China (Fujian Free Trade Zone), with direct access to Xiamen Gaoqi International Airport and Xiamen Port. Standard export shipments are dispatched via DHL Express (3–5 business days to Europe/North America) or FedEx International Priority. Sea freight consolidation is available for bulk orders. All shipments include commercial invoice, packing list, and certificate of origin. Export classification: HS 8537.10 (control panels for voltage ≤ 1,000 V). Customs documentation support is provided at no additional charge.

The 12-month warranty covers defects in materials and workmanship under normal operating conditions as defined in Rexroth application note DOK-CLM01*-LA1*V06**-ANW1-EN-P. Warranty claims are processed within 5 business days of receipt of the returned unit at our Xiamen facility.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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