General
Number of ports	2
EMC certification	EN 55032/35

The Moxa CP-602E-I is a 2-Port CAN-PCI-Express card, designed for use in industrial control systems and automation applications. It enables communication over CAN-Bus (Controller Area Network) and is intended for installation in PCI Express systems. The card features two independent CAN interfaces supporting the protocols CAN 2.0A and CAN 2.0B. These standards are widely used in automation technology and enable data transmission between various devices in a decentralized network structure. The maximum transmission rate is 1 Mbps, with user-defined speed settings available in steps of 10, 20, 50, 125, 250, 500, 800, and 1000 kbps. This ensures flexibility in adapting to different requirements in industrial operations.

Applications
The CP-602E-I is designed for use in harsh industrial environments where high electromagnetic compatibility and reliability are required. Typical application scenarios include communication between control devices, sensors, actuators, and PLCs in production plants, machine building, power supply systems, or rail vehicle construction. The galvanic isolation of 2 kV per port effectively protects the card against voltage spikes and electrical disturbances caused by inductive or capacitive coupling. This enhances operational safety and reduces the risk of malfunctions or hardware damage.

Functions and Features in Detail
The card is based on the NXP SJA1000 CAN controller and the PCA82C251 transceiver, which together ensure stable bus arbitration and error detection. Each of the two ports features a DB9 connector (male) as the interface for connecting to CAN-Bus networks. Termination resistors of 120 Ohm are optionally integrated, allowing network configuration to be adapted to specific requirements. For operational diagnostics, LEDs for transmit and receive status (Tx/Rx) are provided per port, enabling visual monitoring of communication activity.

Technology Explained Simply
The galvanic isolation of 2 kV means that the electrical circuits of the two CAN ports are electrically separated from the main system. This prevents interference voltages or potential differences between different devices or networks from damaging the card or impairing data transmission. The use of the SJA1000 controller ensures reliable data processing and error detection, while the PCA82C251 transceiver provides the physical interface to the CAN-Bus. The combination of these components ensures robust and fault-resistant communication.

Compatibility and Accessories
The card is designed for PCI Express systems and requires a corresponding slot in the host computer. Software support includes Windows drivers as well as a DLL library with sample applications, which are included in the delivery scope. These enable integration into custom software solutions or use in standard development environments. The variant CP-602E-I-T is designed for extended operating temperatures and can be used in the range of -40 to +85 °C, making it suitable for applications in extreme environments. The standard version operates in the temperature range of 0 to 55 °C.

Installation and Mounting
Installation is performed by inserting the card into a free PCI Express slot in the computer. Physical mounting requires no additional components, as the card is directly secured within the system enclosure. Connection to the CAN-Bus is made via the DB9 connectors. Interface configuration is carried out using the provided software, where transmission rate and other parameters can be adjusted according to network requirements.

Operational Advantages
The card offers high electromagnetic compatibility due to the 2-kV isolation and compliance with various EMC standards, including EN 55032/35, CISPR 32, and FCC Part 15B Class B. Certifications for EMI (electromagnetic interference) and EMS (electromagnetic susceptibility) include tests such as ESD (electrostatic discharge), RS (radio-frequency disturbance), EFT (electrical fast transient), Surge (overvoltage), and Voltage Dip (voltage sag). These certifications guarantee reliable operation even under challenging electromagnetic conditions. The integrated LEDs facilitate troubleshooting and maintenance during operation.