This is a user manual for the Universal PCI RS-422/485 Communication Board. The manual describes the features and characteristics of the product.
The SUNIX Universal PCI RS-422/485 Communication Board is a multi‑port serial I/O card that supports both RS‑422 and RS‑485 interfaces. It can be installed in any standard 32‑ or 64‑bit PCI or PCI‑X slot and is plug‑and‑play, with BIOS assigning I/O addresses and IRQs automatically.
The manual covers hardware installation, jumper settings, driver installation for Windows, Linux, and DOS, as well as detailed port configuration and advanced communication features such as auto flow control, collision‑free AHDC/CS™ technology, and optional surge and isolation protection for harsh industrial environments.
| Interface | RS‑422/485 |
|---|---|
| Baud rate | 50 bps ~ 921.6 Kbps |
| Controller | SUNIX SUN1999 (16C950 UART compatible) |
| Number of ports | 1/2/4/8/16 |
| FIFO size | 128 byte |
| ESD protection | +15 kV per signal |
| Surge protection | 500 W peak |
| Isolation protection (SI version) | 2.5 kV |
| Operating temperature | 0 °C to 60 °C |
| Operating humidity | 5 % to 95 % RH |
The board is available in configurations with 1, 2, 4, 8, or 16 ports.
Drivers are provided for Microsoft Windows (XP, Vista, 7, Server 2000/2003/2008, Embedded), Linux, and DOS.