CAN FD Protocol Converter, CAN FD To RS232/RS485 Bidirectional Data Communication

The Waveshare CAN FD TO RS232/RS485 is a DIN-rail–mounted bidirectional converter designed for seamless communication between CAN and serial devices. Built for high-performance industrial applications, it features low latency, high stability, and cost-effective operation.

Supporting five flexible data conversion modes — transparent conversion, transparent conversion with ID, standard protocol conversion, Modbus protocol conversion, and custom protocol conversion — it enables easy interoperability between CAN FD and CAN 2.0A/2.0B systems.

Key Features at a Glance

• High-speed, low-latency, and stable performance for demanding industrial environments

• Supports CAN FD and CAN 2.0A/2.0B protocols

• Five conversion modes: Transparent, Transparent with ID, Standard, Modbus, and Custom

• Wide 9V–36V DC power input, compatible with standard 12V/1A supplies

• Extended temperature range: reliable operation from -40°C to +85°C

• Built-in 120Ω terminal resistors (switchable via DIP switches)

• DIN-rail installation for fast, secure mounting

• Parameter configuration via PC software or AT commands

• Firmware upgrade support through host software

• Robust ESD, EFT, and surge protection for industrial reliability

Powerful Dual-Domain CAN FD Performance

• Arbitration domain baud rate: 5 Kbps ~ 1 Mbps

• Data domain baud rate: 100 Kbps ~ 5 Mbps

• 1-channel CAN port supporting both standard and extended frames

• Flexible frame filtering: standard-only, remote-only, or custom frame IDs (up to 32 groups)

Versatile Serial Connectivity

• 1-channel RS232 or RS485 interface for flexible integration

• Bidirectional data flow options:

  • CAN ⇄ Serial

  • CAN → Serial only

  • Serial → CAN only

• Supports 64 transmission messages and 64 reception messages

• Full Modbus Gateway functionality — CAN FD to Modbus RTU (Master/Slave)

Industrial-Grade Hardware Design

• Working voltage: DC 9V–36V (recommended 12V/1A)

• Size: 110 × 27 × 85.6 mm

• Mounting: Standard DIN-rail installation

• Indicators: POWER, WORK, COM, and CAN status LEDs

• Reset button: Long press to restore factory defaults

Rugged Reliability and Protection

Engineered for harsh environments, the CAN FD TO RS232/RS485 converter includes comprehensive protection features:

• ESD Protection: ±8 kV (air), ±6 kV (contact)

• EFT/Burst Immunity:

  • Power: ±2 kV

  • RS485/RS232: ±1 kV

  • CAN: ±1 kV

• Surge Immunity:

  • Power: ±1 kV differential mode / ±2 kV common mode

  • CAN: ±2 kV common mode

Operating reliably in high-interference industrial conditions, this converter ensures data integrity and long-term durability.

Environmental Tolerance

• Working temperature: -40°C ~ +85°C

• Storage temperature: -40°C ~ +105°C

• Humidity: 5% ~ 95% RH (non-condensing)

Built for 24/7 industrial operation, it guarantees consistent performance in extreme conditions.

Easy Configuration and Upgrade

Configure parameters through AT commands or dedicated PC software, with support for firmware upgrades via the host computer — ensuring your system stays up to date and optimized for evolving protocols.

Compact, Durable, and Efficient

Encased in a robust industrial shell, the converter combines mechanical strength, heat resistance, and electrical protection in a compact footprint. Its DIN-rail form factor makes it simple to install and maintain, perfect for control cabinets and automation systems.