The CP-132EL Series by Moxa is a compact PCI Express interface card offering two serial RS-422/485 ports, engineered for industrial automation systems that require long-distance, multipoint communication. In RS-485 mode, the board supports up to 31 devices in a daisy-chain setup, spanning distances up to 1.2 km.

Supporting data rates of up to 921.6 kbps with a 128-byte FIFO and software flow control, the CP-132EL ensures stable high-speed performance. For enhanced protection in demanding environments, the CP-132EL-I-DB9M model includes 2 kV electrical isolation.

Thanks to its low-profile form factor, the board fits compact PCs, making it ideal for embedded and space-constrained systems. Built-in Tx/Rx LEDs on each port simplify maintenance and monitoring. Broad driver support for Windows, Linux, and UNIX ensures maximum integration flexibility.

Technical Specifications:

Interface and Communication:

• Controller: 16C550C compatible
• Bus: PCI Express 1.0
• Connector: DB25 female (internal), with CBL-M25M9x2-50 cable (2 x DB9 male, 50 cm)
• FIFO: 128 bytes
• Max. Boards per PC: 8
• Ports: 2 serial ports
• 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: None, XON/XOFF
• Isolation: 2 kV (only on CP-132EL-I)

Signal Assignments:

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

Driver Support:

• Windows: DOS to Windows 10, Server 2019, CE 5.0/6.0, XP Embedded
• Linux: Kernel 2.4 to 5.x
• UNIX: Solaris 10, UnixWare 7, SCO OpenServer 5/6, QNX 6

Power Consumption:

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

Dimensions and Indicators:

• Size:
• CP-132EL: 67.21 x 101.97 mm
• CP-132EL-I: 67.21 x 103.97 mm
• LED Indicators: Tx/Rx for each port

Environmental Conditions:

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

Certifications and Standards:

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

Package Contents:

• 1 x CP-132EL or CP-132EL-I PCIe board
• 1 x CBL-M25M9x2-50 cable (M25 to 2 x DB9)
• 1 x Quick Installation Guide
• 1 x Warranty Card

Optional Accessories:

• Mini DB9F-to-TB terminal block connector