Moxa CP-118U-I-T ; 8-Port RS232/422/485 board with isolation content_copy

The Moxa CP-118U-I-T is an 8-port universal PCI interface card designed for use in industrial automation systems. It enables serial communication via RS-232, RS-422, and RS-485 interfaces and is designed for demanding environments where high reliability and immunity to interference are required. The card is suitable for operation in harsh environments such as outdoor enclosures, machine controls, or industrial data centers, thanks to an operating temperature range of -40 to +85 °C. Optical isolation with 2 kV protects connected systems from electrical disturbances and potential differences. The card features a DB78 socket for connection and supports data rates up to 921.6 kbps. Communication settings include data bits from 5 to 8, stop bits of 1, 1.5, or 2, and parity types such as None, Even, Odd, Space, and Mark. Flow control options include None, RTS/CTS, and XON/XOFF. The card is equipped with a 128-byte FIFO, which enhances data transfer efficiency. Driver support includes various operating systems: Windows (DOS, Windows 95 to Windows 10, Server 2008–2019, CE 5.0/6.0, XP Embedded), Linux (kernel 2.4.x to 5.x), and UNIX systems such as QNX 6, SCO OpenServer, UnixWare 7, Solaris 10, and FreeBSD. The card is designed for operation on a 32-bit universal PCI bus and is compatible with 3.3 V and 5 V voltages. Power consumption is 20 mA at 5 VDC. Physical dimensions are 82 x 135 mm. Each port features LEDs to indicate transmit and receive activity, facilitating maintenance and diagnostics. The card is designed for use with up to eight boards per PC. Environmental conditions include humidity from 5 to 95 % (non-condensing) and storage temperature from -40 to +85 °C. Certifications include EMC (EN 55032/35), EMI (CISPR 32, FCC Part 15B Class B), and EMS (IEC 61000-4-2 for ESD, IEC 61000-4-3 for RS). The MTBF is 1,073,385 hours according to Telcordia SR332. The card is RoHS, CRoHS, and WEEE compliant. The warranty is 5 years.

Applications

The CP-118U-I-T is designed for industrial applications requiring serial communication over multiple ports. Typical use cases include connecting sensors, control devices, machine controls, industrial data centers, or outdoor enclosures. The high operating temperature and optical isolation make the card particularly suitable for harsh environments where electrical interference or high temperatures may occur. Support for various operating systems increases flexibility when integrating into existing system landscapes.

Functions and Features in Detail

The card provides eight serial ports connected via a DB78 socket. Each port can be individually configured to select the interface type (RS-232, RS-422, RS-485) and communication parameters (baud rate, data bits, parity, stop bits, flow control). Optical isolation with 2 kV protects connected devices from voltage spikes and potential differences. LEDs per port indicate transmit and receive activity, which is helpful for troubleshooting and maintenance. The card is designed for operation on a universal PCI bus and supports both 3.3 V and 5 V voltages, increasing compatibility with various systems.

Technology Explained Simply

The CP-118U-I-T is based on a MU860 interface controller compatible with the 16C550C standard. This controller enables reliable serial data transmission with a FIFO buffer size of 128 bytes, which accelerates data transfer and reduces buffer overruns. Support for RS-232, RS-422, and RS-485 allows connection to various devices, with RS-422 and RS-485 being suitable for longer transmission distances and harsher environments. Optical isolation provides galvanic separation of electrical circuits to prevent interference and damage from voltage spikes. The operating temperature range of -40 to +85 °C makes the card suitable for use in extreme environments, such as outdoor enclosures or industrial machinery.

Compatibility and Accessories

The card is designed for operation on a 32-bit universal PCI bus and is compatible with 3.3 V and 5 V voltages. Driver support includes Windows, Linux, and various UNIX systems, enabling integration into heterogeneous system environments. The card can be installed in up to eight instances per PC, increasing scalability. Signal assignment is defined for RS-232 (TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND), RS-422 (Tx±, Rx±, GND), and RS-485 (4-wire: Tx±, Rx±, GND; 2-wire: Data±, GND). The card is RoHS, CRoHS, and WEEE compliant, ensuring environmental compatibility.

Installation and Mounting

Installation is performed by inserting the card into a free PCI slot of the computer. The card is designed for operation on a universal PCI bus and requires no additional power supply, as it is powered via the PCI bus at 5 VDC. The DB78 connector enables connection to external devices via appropriate cables. Configuration is done via drivers available for the supported operating systems. LEDs per port facilitate visual inspection of communication activity during installation and maintenance.

Operational Advantages

The high operating temperature range of -40 to +85 °C allows use in harsh environments without affecting functionality. Optical isolation with 2 kV protects connected systems from electrical interference. Support for multiple operating systems increases flexibility during integration. LEDs per port simplify diagnostics and maintenance. The MTBF of 1,073,385 hours according to Telcordia SR332 demonstrates the high reliability of the card. The 5-year warranty underscores the quality and durability of the product.

General
Number of ports	8
Maximum baud rate	921,6 kbps
Power supply	5 VDC
Data bits	5, 6, 7, 8
Stop bits	1, 1.5, 2
MTBF	1.073.385 Stunden nach Telcordia SR332

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