General
Number of ports	8
Data bits	5, 6, 7, 8
Stop bits	1, 1.5, 2
Air humidity	5–95 % (nicht kondensierend)
MTBF	390.883 Std.

The Moxa CP-118E-A-I is a PCI Express multi-port serial card with eight serial interfaces, designed for use in industrial automation systems, point-of-sale end devices (POS), and machine systems such as automated teller machines (ATM). The card enables the connection of multiple serial devices to a computer via a single PCI Express slot and offers high reliability in demanding environments. The integrated electrical isolation of 2 kV and surge protection of 4 kV protect the card and connected devices from electrical disturbances and transient voltage spikes, which is particularly important in industrial facilities.

Applications

The CP-118E-A-I is suitable for applications where multiple serial devices such as sensors, controls, printers, or industrial communication modules need to be connected to a PC. Support for RS-232, RS-422, and RS-485 enables connection to a wide range of devices using different serial protocols. The card is commonly used in manufacturing automation, retail, and financial technology, where stable and long-term operational reliability is required.

Features and Specifications in Detail

The card features eight serial ports connected via a DB78 socket. Each port is equipped with an LED for transmit (Tx) and receive (Rx) to enable visual monitoring of data traffic. The baud rate can be set between 50 bps and 921.6 kbps, including non-standard values. Data transmission occurs with 5, 6, 7, or 8 data bits, 1, 1.5, or 2 stop bits, and parity modes such as None, Even, Odd, Space, or Mark. Flow control is supported via RTS/CTS and XON/XOFF, stabilizing data transmission in complex networks. A 128-byte FIFO buffer ensures efficient data buffering and reduces processor load.

Technology Explained Simply

The integrated 2-kV isolation electrically separates the serial ports from the main system to prevent damage from voltage spikes or potential differences. The 4-kV surge protection safeguards against transient voltage spikes caused by lightning or electrical disturbances. The card operates with a 3.3 VDC power supply and consumes 2.356 mA. Dimensions are 107 mm (width) × 136.9 mm (length), and weight is 139.7 g. Operating temperature ranges from 0 °C to 55 °C, and storage temperature from -20 °C to 85 °C. Relative humidity may range from 5–95 %, provided no condensation occurs.

Compatibility and Accessories

The card is compatible with various operating systems, including Windows 95 to 11, Server 2022, Embedded CE/XPe, Linux (kernel 2.4.x to 5.x, including ARM-based platforms), and UNIX systems such as Solaris 10, UnixWare 7, and SCO OpenServer 5/6. Optional cables are available for connection options, including CBL-M78M25x8-100 (DB78 to 8 x DB25) and CBL-M78M9x8-100 (DB78 to 8 x DB9). Additionally, a Mini DB9F-to-TB connector adapter (female DB9 to screw terminal) is available, enabling flexible cabling.

Installation and Mounting

Installation is performed via a PCI Express slot in the computer. Serial port configuration can be done using DIP switches, enabling simple and quick setup. The intelligent RS-485 functionality supports features such as One-Click installation and fault diagnosis, simplifying configuration and troubleshooting. The card is delivered with a Quick Installation Guide and a warranty card.

Operational Advantages

The high MTBF (Mean Time Between Failures) of 390,883 hours for the CP-118E-A-I demonstrates the card’s high reliability. Support for multiple serial protocols and flexible configuration via DIP switches make the card a universal solution for industrial applications. Integrated protection functions increase lifespan and reduce downtime. Compatibility with a wide range of operating systems and the ability to work with optional cables and adapters enhance flexibility in use.

The card complies with EMI standards CISPR 32 and FCC Part 15B, as well as EMS standards IEC 61000-4-2 to -4-8. It also meets environmental standards RoHS, CRoHS, and WEEE. The warranty period is five years.