2-port RS-232/422/485 Universal PCI serial boards

Moxa’s CP-112UL series of multiport serial boards are designed to be used by industrial automation system integrators for long distance, multi-point, PC-based data acquisition applications. On-chip Automatic Data Direction Control for precision RS-485 communication requires precise timing control for enabling and disabling the line driver. Moxa’s Turbo Serial EngineTM chip that powers the CP-112UL boards comes with on-chip ADDC®, which makes RS-485 as easy to use as RS-232. The boards come with 2 RS-422/485 serial ports, both of which can achieve data rates up to 921.6 kbps. In RS-485 mode, the serial port can connect up to 31 daisy-chained RS-485 devices within a range of 1.2 km. For long distance RS-485 communication, 2 kV electrical isolation protection is available to prevent equipment damage.

Drivers Provider for Windows, Linux, and Unix
Moxa continues to support a wide variety of operating systems, and the CP-112UL boards are no exception. Reliable Windows COM and Linux/Unix TTY drivers are provided for all Moxa boards, and other operating systems, such as WEPOS, are also supported for embedded integration.


• Over 700 kbps data throughput for top performance
• 128-byte FIFO and on-chip H/W, S/W flow control
• Universal PCI compatible with 3.3/5 V PCI and PCI-X
• Serial communication speed up to 921.6 kbps
• Drivers provided for a broad selection of operating systems, including the latest Windows and Linux
• Easy maintenance with on-board LED display
• 0 to 55°C operating temperature