The CP-138U from Moxa is a durable and high-performance 8-port serial board designed for industrial applications, supporting RS-422/485 communication over a Universal PCI interface. Ideal for high-density port scenarios such as machine control, plant communication, or industrial automation, this board features a MU860 controller fully compatible with 16C550C and a 128-byte FIFO for efficient data handling.

Its extensive driver support for Windows, Linux, and UNIX platforms ensures compatibility across diverse systems. With data rates up to 921.6 kbps and an operating temperature range of 0 to 55°C, the CP-138U is built to perform reliably in demanding environments. Integrated Tx and Rx LEDs on each port facilitate quick status checks during operation.

Technical Specifications:

Serial Interface:

• Communication Controller: MU860 (16C550C compatible)
• Bus: 32-bit Universal PCI
• Connector: DB62 female
• FIFO: 128 bytes
• Max. Number of Boards per PC: 8
• Number of Ports: 8
• 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: None, XON/XOFF

Serial Signals:

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

Software Features:

• Windows Drivers: DOS to Windows 10, including Server and Embedded variants
• Linux Drivers: Kernel 2.4.x to 5.x
• UNIX Drivers: QNX 6, SCO OpenServer, UnixWare 7, Solaris 10, FreeBSD

Power Requirements:

• Input Current: 135 mA @ 5 VDC

Physical Characteristics:

• Dimensions: 82 x 135 mm (3.22 x 5.31 in)

LED Indicators:

• Built-in Tx, Rx LEDs per port

Environmental Limits:

• Operating Temperature: 0 to 55°C (32 to 131°F)
• Storage Temperature (with package): -40 to 85°C (-40 to 185°F)
• Ambient Relative Humidity: 5 to 95% (non-condensing)

Certifications:

• EMC: EN 55032/35
• EMI: CISPR 32, FCC Part 15B Class B
• EMS: IEC 61000-4-2 (ESD), IEC 61000-4-3 (RS)
• International Approval: KC

Environmental Compliance:

• Green Product: RoHS, CRoHS, WEEE compliant

Reliability:

• MTBF: 1,147,210 hours (Telcordia SR332 standard)

Warranty:

• Period: 5 years
• Details: www.moxa.com/warranty