General
Number of ports	4 Stück
Maximum baud rate	921,6 kbps
FIFO memory size	128 Byte
Operating temperature (T-model)	-40–85 °C
Storage temperature	-40–85 °C
Air humidity	5–95 % (nicht kondensierend)
MTBF	2.124.022 Stunden

The POS-104UL-DB9M from Moxa is a 4-port RS-232 PCI universal interface card, specifically designed for use in Point-of-Sale systems, cash dispensers, and industrial automation environments. The card enables the connection of serial devices to a PC via the PCI bus and provides additional power supply through the serial ports, allowing external devices to be directly powered via the interface with 5 V or 12 V DC. The card is suitable for use in compact industrial PCs, as it is designed in low-profile form factor and is compatible with 3.3 V and 5 V PCI and PCI-X slots.

Applications

The POS-104UL-DB9M is designed for applications in industrial automation and retail, particularly in systems relying on serial communication. Typical use cases include connecting cash registers, printers, scanners, barcode scanners, terminals, and other serial peripheral devices. The card is also suitable for systems operating in environments with elevated temperature requirements, as a T-model with an operating temperature range of -40 to 85 °C is available.

Features and Equipment in Detail

The card features four independent RS-232 ports, connected via a DB44 connector (female). Each port supports standard signals TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, and optionally RI. Communication is handled via a 16C550C-compatible controller, enabling a maximum baud rate of 921.6 kbps. Data transmission can be configured with 5, 6, 7, or 8 data bits, 1, 1.5, or 2 stop bits, and parity types including none, even, odd, space, or mark. Flow control methods such as RTS/CTS and XON/XOFF are also supported. Each port includes a 128-byte FIFO buffer, enhancing data transmission efficiency. Up to eight cards can be installed per PC.

Technology Explained Simply

The card uses the universal PCI bus, supporting both 3.3 V and 5 V PCI and PCI-X slots, ensuring high compatibility with various systems. Power supply through the serial ports allows external devices to be connected without additional power sources, simplifying installation and reducing the number of required cables. The card is designed for operation in environments with humidity levels from 5 to 95 % (non-condensing). The standard model operates between 0 and 55 °C, while the T-model can operate from -40 to 85 °C.

Compatibility and Accessories

The POS-104UL-DB9M supports a wide range of operating systems, including Windows (from DOS to Windows 10 and Windows Embedded), Linux (kernel 2.4.x to 5.x), and UNIX systems such as Solaris, UnixWare, and SCO OpenServer. The card comes with an M44-to-4x-DB9-M cable (50 cm), enabling connection to DB9-M connectors. The interface is RS-232 compliant, ensuring standard connectivity to many serial devices.

Installation and Mounting

Installation is performed by inserting the card into an available PCI or PCI-X slot of the computer. The card is designed in low-profile form factor, making it suitable for compact industrial PCs. The delivery includes a quick installation guide to assist with setup and configuration. The card is supplied with an M44-to-4x-DB9-M cable, enabling connection to serial devices.

Operational Advantages

The card offers high reliability with an MTBF of 2,124,022 hours according to Telcordia TR/SR. Power supply through the ports reduces the number of required power supplies and simplifies installation. Broad operating system support and compatibility with various PCI slots increase flexibility during system integration. The card is also certified according to EN 61000-6-2/-6-4, FCC Part 15B Class B, and IEC 61000-x for ESD, RS, EFT, Surge, CS, and PFMF. The warranty period is 5 years.

The card is delivered with an M44-to-4x-DB9-M cable (50 cm), a quick installation guide, and warranty and substance documentation. Dimensions are 64.4 mm x 120 mm. The card is designed for operation in environments with humidity levels from 5 to 95 % (non-condensing). The standard model operates between 0 and 55 °C, while the T-model can operate from -40 to 85 °C. The card comes with a 5-year warranty.