The Moxa CP-132EL Series offers compact PCI Express boards with two serial ports for RS-422 and RS-485 communication, purpose-built for industrial automation applications that require stable, long-distance, multipoint data acquisition. Its low-profile design makes it suitable for small enclosures and embedded systems.

Supporting high-speed communication up to 921.6 kbps, the cards feature 128-byte FIFO buffers and software-based flow control. In RS-485 mode, up to 31 devices can be connected via a daisy chain over distances of up to 1.2 km. The CP-132EL-I-DB9M variant includes 2 kV electrical isolation for protection against surges in demanding environments.

Moxa provides extensive driver support for Windows, Linux, and UNIX operating systems, ensuring seamless integration. Built-in Tx/Rx LEDs make status monitoring and troubleshooting quick and simple.

Technical Details:

Interface:

• Comm. Controller: 16C550C compatible
• Bus: PCI Express 1.0
• Connector: DB25 female (internal), with M25-to-2x-DB9M cable (50 cm)
• FIFO: 128 bytes
• Max. Boards per PC: 8
• No. of Ports: 2 serial ports
• Serial Standards: RS-422, RS-485
• Baudrate: 50 bps to 921.6 kbps
• Data Bits: 5, 6, 7, 8
• Stop Bits: 1, 1.5, 2
• Parity: None, Even, Odd, Space, Mark
• Flow Control: XON/XOFF
• Isolation: 2 kV on CP-132EL-I model

Signal Definitions:

• RS-422: Tx+, Tx-, Rx+, Rx-, GND
• RS-485-4w: Tx+, Tx-, Rx+, Rx-, GND
• RS-485-2w: Data+, Data-, GND

Driver Support:

• Windows: DOS to Windows 10, Windows Server 2008–2019, Embedded CE/XPe
• Linux: Kernel 2.4.x to 5.x
• UNIX: Solaris 10, UnixWare 7, SCO OpenServer 5/6, QNX 6

Power Requirements:

• CP-132EL: 548 mA @ 3.3 VDC
• CP-132EL-I: 636 mA @ 3.3 VDC

Physical Characteristics:

• Dimensions:
• CP-132EL: 67.21 x 101.97 mm
• CP-132EL-I: 67.21 x 103.97 mm
• LED Indicators: Tx, Rx per port

Environmental Limits:

• Operating Temperature: 0 to 55 °C
• Storage Temperature: -20 to 85 °C
• Humidity: 5–95% (non-condensing)

Certifications and Standards:

• EMC/EMI: EN 55032/35, CISPR 32, FCC Part 15B Class B
• EMS: IEC 61000-4-2, -3, -4, -5, -6, -8
• Environmental: RoHS, CRoHS, WEEE
• MTBF:
• CP-132EL: 4,147,133 hrs
• CP-132EL-I: 1,681,099 hrs
• Warranty: 5 years

Package Contents:

• 1 x CP-132EL Series PCIe board
• 1 x M25 to 2 x DB9M cable (50 cm)
• 1 x Quick Installation Guide
• 1 x Warranty card