Product Short Description
Product Name: Bachmann CM202 CAN Interface Module (M200 Control System)
Product Introduction: The Bachmann CM202 is a CAN interface module for the Bachmann M200 control system, providing two independent, galvanically isolated CAN connections. It supports multiple CAN-based protocols including CANopen, SAE J1939, and NMEA 2000, making it a versatile fieldbus manager for robust industrial communication.
Description
Technical Specifications:
- Part Number: CM202 (00009698-20), CM202 CC (00016404-20 for ColdClimate)
- CAN Connections: 2 independent CAN interfaces
- Baud Rate: 10 kbaud to 1 Mbaud
- Connector: 2 × 9-pin D-sub female sockets
- Signal Level: Per CiA DS 102/4
- Galvanic Isolation: 500 V (from system), short-circuit proof
- Max Bus Length: 5,000 m (depends on baud rate)
- Max Network Nodes: Depends on baud rate, 127 addresses per CAN network
- Power Consumption: 320 mA at 5 V DC
- Protocols: CANopen, SAE J1939, NMEA 2000, proprietary protocols
- CANopen Features: NMT manager/server, up to 128 TxPDOs + 128 RxPDOs per network
- Max Modules: 4 CM202 per M200 controller, 8 CAN networks per controller
- Diagnostics: Bus load monitoring, frame counters, error counters, built-in protocol sniffer
Functional Features: Each of the two CAN connections can operate as completely separate networks or be daisy-chained via DIP switch configuration. Both connections are galvanically isolated from the controller and short-circuit-proof. Supports CANopen manager and server functionality with variable PDO mapping. Node guarding or heartbeat protocol provides network monitoring. Extensive API for SDO, LMT, LSS, and Emergency messages.
Application Scenarios: Designed for maximum communication robustness in existing and new automation applications. Suitable for CANopen device integration, SAE J1939 implementations in mobile/hydraulic equipment, and NMEA 2000 marine applications within the M200 control system architecture.
Environmental Parameters:
- Standard Operating Temperature: -30 °C to +60 °C
- ColdClimate Version (CM202 CC): Extended temperature range
- Storage Temperature: -40 °C to +85 °C
- Relative Humidity: 5 to 95% (with or without condensation)
- Pollution Degree: 2 (per IEC 60664-1)
- Certifications: CE, UKCA, cULus, Marine approvals (ABS, BV, DNV, KR, LR, NK, RINA)
Material/Structural Characteristics: The module is designed as a fieldbus interface module for DIN rail mounting within the M200 controller chassis. The two 9-pin D-sub connectors follow CiA DS 102/4 pin assignment.
Working Principle: The CM202 operates as a CAN fieldbus manager, processing CAN protocol communication on two independent channels. It translates between the M200 controller’s internal process image and external CAN devices using configurable protocol stacks (CANopen, J1939, NMEA 2000).
Installation Requirements:
- Install in Bachmann M200 controller system (max 4 CM202 per controller)
- Up to 2 CAN networks per module
- Connect CAN bus using appropriate cables (K-CAN series)
- Terminate bus with 120 Ω resistor (S-CAN/1B) at endpoints
- Configure baud rate and protocol via SolutionCenter
Usage Precautions:
- Maximum 4 CM202 modules per M200 controller
- 127 max addresses per CAN network
- Bus length limited by baud rate selection
- Replace module within environmental specifications
- Use proper termination resistors for bus integrity
- For ColdClimate applications, use CM202 CC variant
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