The CP-114EL Series by Moxa is a high-performance family of 4-port PCI Express serial boards supporting RS-232/422/485 interfaces. Designed for POS, ATM, and industrial control environments, these boards support baudrates up to 921.6 kbps and offer over 800 kbps of data throughput per port. Built-in 128-byte FIFOs and both hardware and software flow control ensure reliable serial communication.

The low-profile design allows the boards to fit into compact systems. The CP-114EL-I models offer 2 kV electrical isolation, making them suitable for demanding or hazardous industrial environments. The boards are compatible with a wide range of operating systems including Windows, Linux, and UNIX, with long-term driver support for embedded platforms.

Specifications:

Serial Interface:

• Controller: 16C550C compatible
• Bus: PCI Express 1.0
• FIFO: 128 bytes
• Ports: 4
• Max. boards per PC: 8
• Standards: RS-232, RS-422, RS-485

Connectors:

• DB44 female (breakout cable required)

Transmission Parameters:

• Baudrate: 50 bps to 921.6 kbps (supports non-standard rates)
• 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

Signal Definitions:

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

Isolation:

• CP-114EL-I models: 2 kV isolation

Software Support:

• Windows: DOS to Windows 10, Server 2003–2019, CE 5.0/6.0, XP Embedded
• Linux: Kernel 2.4.x to 5.x
• UNIX: QNX 6, Solaris 10, UnixWare 7, SCO OpenServer 5/6

Power Requirements:

• CP-114EL: 835 mA @ 3.3 VDC
• CP-114EL-I: 1,170 mA @ 3.3 VDC

Physical Characteristics:

• Dimensions:
• CP-114EL: 67.21 x 103 mm
• CP-114EL-I: 67.21 x 135 mm
• LEDs: Built-in Tx/Rx per port

Environmental Limits:

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

Certifications:

• EMC: EN 55032/35
• EMI: CISPR 32, FCC Part 15B Class B
• EMS: IEC 61000-4-2/3/4/5/6/8
• Environmental: RoHS, CRoHS, WEEE compliant

Reliability:

• MTBF:
• CP-114EL: 2,347,197 hrs