General
Standards	RS-422, RS-485
Data bits	5, 6, 7, 8
Stop bits	1, 1.5, 2

The CP-132UL-T from Moxa is a 2-port Universal PCI interface card for industrial applications requiring high reliability and long range. It enables connection of devices via RS-422/RS-485 interfaces and is designed for use in automation systems where robust data communication under demanding environmental conditions is required. The card supports transmission rates up to 921.6 kbps and is designed for integration into PCs with a 32-bit Universal PCI bus (3.3/5 V, compatible with PCI/PCI-X). The form factor corresponds to the Low-Profile MD1 standard, making it particularly suitable for compact enclosures.

Applications
The CP-132UL-T is suitable for industrial data acquisition and control, for example in manufacturing automation, building automation, or machine building. It is used to connect serial devices such as sensors, actuators, frequency converters, or industrial controllers to a PC. The RS-485 configuration allows chaining of up to 31 devices over a distance of up to 1.2 km, making it especially suitable for distributed systems.

Functions and Features in Detail
The card features two serial ports supporting RS-422 and RS-485 protocols. Data transmission occurs at baud rates from 50 bps to 921.6 kbps. Configuration includes various data bits (5, 6, 7, 8), stop bits (1, 1.5, 2), and parity types (none, even, odd, Space, Mark). Flow control can be managed via XON/XOFF. An integrated FIFO memory module with 128 bytes ensures efficient data buffering. The integrated ADDC® technology (Automatic Data Direction Control) automatically controls transmission direction for RS-485, simplifying configuration and integration. Each port includes LEDs for transmit (Tx) and receive (Rx) to enable visual monitoring of operation.

Technology Explained Simply
The card is based on the MU860 chipset, compatible with the 16C550C, and supports the 32-bit Universal PCI bus. The internal connector is a DB25, with an optional M25 to 2 x DB9-M cable available. The maximum number of installable cards per PC is eight. Signals are specified according to RS-422 (Tx±, Rx±, RTS±, CTS±, GND) and RS-485 (4-wire: Tx±, Rx±, GND; 2-wire: Data±, GND). Power supply is via 5 VDC, with the CP-132UL-T consuming 120 mA. The card is designed for use in environments with high electromagnetic interference and complies with EMC standards EN 55032/35, as well as EMI standards CISPR 32 and FCC Part 15B Class B. EMS compliance includes ESD (IEC 61000-4-2) and RS (IEC 61000-4-3). Environmental standards RoHS, CRoHS, and WEEE are met.

Compatibility and Accessories
The CP-132UL-T is compatible with a wide range of operating systems, including Windows (DOS to Windows 10/Server 2019/XP Embedded/CE), Linux (Kernel 2.4.x to 5.x), and UNIX (QNX 6, Solaris 10, UnixWare 7, SCO OpenServer, FreeBSD). Optional accessories include a cable CBL-M25M9x2-50 (50 cm, M25 to 2 x DB9-M) and an adapter Mini DB9F-to-TB (terminal block). These components allow flexible adaptation to various connection options in industrial environments.

Installation and Mounting
The card is inserted into a free PCI slot of the computer. The Low-Profile form factor requires no additional mounting height, making it suitable for compact systems. The internal DB25 socket allows direct connection to internal connectors. When using the optional M25 to 2 x DB9-M cable, external devices can be connected. Installation is guided by the included quick start guide, which describes the necessary setup steps.

Operational Advantages
The CP-132UL-T is characterised by high operational reliability. The MTBF is 1,647,832 hours, indicating high longevity and reliability. The operating temperature ranges from 0 to 55 °C (standard version), with a Wide-Temp version available from -40 to 85 °C. Storage is possible in the range of -40 to 85 °C. Humidity is 5 to 95 % (non-condensing). The card complies with Telcordia SR332 standard, confirming quality and reliability for industrial use. The integrated isolation of 2 kV (in the CP-132UL-I variant) protects against voltage surges, which is important for use in electrically harsh environments.