Primary System Role
The Bachmann CM202 operates as a high-performance communication gateway, enabling the M1 controller to function as a master node within a CANopen network. Specifically, this module coordinates data exchange between the central processor and decentralized field devices such as frequency converters, specialized sensors, and remote I/O islands. By implementing the CANopen DS301 protocol, the CM202 ensures a standardized and deterministic communication path across the entire industrial bus. Because it offloads network management from the CPU, the module maintains high system throughput even when controlling a large number of distributed slaves.
Enhanced Technical Performance
- Ensures Real-Time Determinism: The CM202 handles time-critical Process Data Objects (PDOs) with millisecond-level precision. In doing so, it synchronizes decentralized drives and actuators with the master control loop, which is essential for complex motion tasks.
- Simplifies Device Integration: The module supports extensive Service Data Object (SDO) communication for parameterization. As a result, engineers can configure and monitor remote field devices directly from the Bachmann M1 engineering environment without requiring separate third-party tools.
- Protects Network Integrity: The hardware features integrated galvanic isolation between the CAN bus and the internal system backplane. Consequently, it prevents electrical noise and high-voltage transients from damaging the central CPU or other I/O modules in the rack.
- Facilitates Rapid Troubleshooting: Beyond standard data routing, the CM202 utilizes onboard status LEDs to display bus errors and node health. Therefore, maintenance teams can quickly identify a faulty cable or a disconnected slave device through direct visual inspection.
- Supports Robust Expansion: Finally, the module allows for the integration of up to 126 CANopen slave nodes. By providing this high scalability, it enables facilities to expand their automation infrastructure without needing to upgrade the primary controller hardware.
Technical Specifications
- Model Identifier: CM202
- Part Number: 00010140-00 (Standard) / 00010140-60 (ColdClimate)
- Bus Interface: CAN-interface (ISO 11898)
- Protocol Support: CANopen Master (DS301, DS401, DS402)
- Baud Rate: 10 kbit/s up to 1 Mbit/s (Software configurable)
- Connection Type: 9-pin D-Sub connector
- Galvanic Isolation: 500 V (Bus to system)
- Status Display: Run and Error LEDs for bus monitoring
- Power Consumption: Approx. 1.2 W (via backplane)
- Operating Temperature: 0 °C to +60 °C (Standard) / -30 °C to +60 °C (CC version)
- Standard Compliance: EN 61131-2, CE, UL, GL (Maritime)
