General
EMC certification	EN 55032/35

The Moxa CP-602U-I is an industrial-grade CAN interface card for use in automation systems. It features two independent CAN ports and is designed for installation in computers with Universal PCI bus (32-bit, compatible with 3.3 V and 5 V). The card enables communication with CAN-based devices in industrial environments where reliable data transmission under harsh conditions is required. Support for CAN 2.0A and CAN 2.0B protocols allows integration into existing CAN networks used in manufacturing automation, machine control, or vehicle technology.

Applications

The CP-602U-I is suitable for applications requiring a robust, galvanically isolated CAN interface. Typical use cases include controlling production systems, monitoring machines via CAN bus, or integrating sensors and actuators into industrial control systems. The card is particularly suited for environments with high electromagnetic interference, as it provides galvanic isolation with 2 kV isolation per port. The wide-temperature variant CP-602U-I-T extends the application range to systems operated under extreme temperatures, such as outdoor installations or climatically stressed production halls.

Functions and Features in Detail

The card features two CAN ports, each connected via a DB9 connector (male). Each port is equipped with an LED indicating transmit and receive status, enabling visual monitoring of communication. An optional, switchable 120-ohm termination resistor per port supports signal integrity in the CAN bus network. Communication is handled by an integrated NXP SJA1000 CAN controller and a PCA82C251 transceiver, ensuring reliable bus arbitration and error detection. The baud rate can be set in steps from 10 to 1000 kbps, with support for user-defined values.

Technology Explained Simply

Galvanic isolation with 2 kV isolation protects the card’s internal circuits from voltage spikes and disturbances that may enter via the CAN bus. This is especially important in industrial environments where electrical interference can be caused by motors, switches, or other devices. Support for CAN 2.0A and CAN 2.0B ensures compatibility with a wide range of CAN devices. The Universal PCI interface allows use in computers with various PCI standard voltages (3.3 V and 5 V), increasing installation flexibility.

Compatibility and Accessories

The card is designed for operation under Windows systems. The delivery includes a Windows driver enabling communication between the operating system and the card. Additionally, a DLL program library with example code is provided to facilitate integration into customer-specific applications.

Installation and Mounting

Installation involves inserting the card into a free PCI slot of a computer. The CAN ports are connected via DB9 connectors to the respective CAN devices. Configuration of the baud rate and termination resistors is performed using the software tools included. The card requires no additional power supply, as it is powered through the PCI bus.

Operational Advantages

The CP-602U-I offers a reliable and cost-efficient solution for CAN communication in industrial applications. Galvanic isolation increases immunity to interference, LED indicators simplify diagnostics, and the wide temperature stability of the wide-temperature variant extends the application range. Software support with drivers and DLL library enables quick integration into existing systems. The card is designed for an operating temperature of 0 to 55 °C, while the variant CP-602U-I-T can operate from -40 to +85 °C. Operating humidity is 5 to 95 % (non-condensing). The card complies with EMC standards EN 55032/35, CISPR 32, and FCC Part 15B Class B, as well as EMS tests according to IEC 61000-4-2 to -4-11. Environmental compliance is ensured by RoHS, CRoHS, and WEEE. The warranty period is 5 years.