The Moxa CP-134U Series is a rugged 4-port Universal PCI serial board designed for industrial environments requiring long-distance serial communication. It provides a mix of 2 RS-232/422/485 ports and 2 RS-422/485 ports, offering versatile connectivity options for modern control systems and legacy devices.

With Moxa’s Turbo Serial Engine™, the board supports 921.6 kbps baudrate, 128-byte FIFO, and automatic RS-485 direction control (ADDC®), making configuration easier and improving reliability in multidrop environments (up to 31 devices over 1.2 km).

The CP-134U-I variant features 2 kV isolation for extra protection in high-noise industrial installations. The board is PCI/PCI-X compatible (3.3 V and 5 V) and ships with cabling and driver support for Windows, Linux, and UNIX platforms.

Technical Details:

Interface:

• Controller: MU860 (16C550C compatible)
• Bus: 32-bit Universal PCI (3.3 V / 5 V compatible, PCI-X)
• Connector: DB44 female with breakout cable (4 x DB9M or DB25M)
• FIFO: 128 bytes
• Ports: 4
• Max. boards per PC: 8
• Standards:
• 2 x RS-232/422/485
• 2 x RS-422/485
• 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, RTS/CTS, XON/XOFF
• Isolation: 2 kV (for -I models)

Signal Mapping:

• RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
• RS-422: Tx±, Rx±, RTS±, CTS±, GND
• RS-485 (4-wire): Tx±, Rx±, GND
• RS-485 (2-wire): Data±, GND

Driver Support:

• Windows: DOS to Windows 10 / Server 2019 (x86/x64), CE 5.0/6.0, XP Embedded
• Linux: Kernel 2.4.x to 5.x
• UNIX: QNX 6, SCO OpenServer, UnixWare 7, Solaris 10, FreeBSD

Power Consumption:

• Standard: 180 mA @ 5 VDC
• Isolated version: 850 mA @ 5 VDC

Physical Characteristics:

• Dimensions:
• Standard: 82.5 x 120 mm
• Isolated: 115 x 120 mm
• LEDs: Tx/Rx LEDs per port

Environmental Limits:

• Operating Temp:
• Standard: 0 to 55 °C
• Wide Temp: -40 to 85 °C
• Storage Temp: -40 to 85 °C
• Humidity: 5–95% non-condensing

Certifications:

• EMC: EN 55032/35
• EMI: CISPR 32, FCC Part 15B Class B
• EMS: IEC 61000-4-2 (ESD), -4-3 (RS)
• Environmental: RoHS, CRoHS, WEEE

MTBF:

• 480,209 hours (Telcordia SR332)

Warranty:

• 5-year manufacturer warranty

Package Contents:

• 1 x CP-134U Series board
• 1 x breakout cable (4 x DB9 or DB25 male)
• 1 x quick installation guide
• 1 x warranty and environmental statement