The Sealevel Systems ULTRA 485 provides the PC with a direct RS-422/485 Asynchronous link to data collection and other devices. Individually selectable addresses and extended “AT” interrupts allow for seamless integration into OS/2 and Windows systems. The ULTRA 485’s “auto enable” design eliminates RS-485 communications roadblocks under Windows and OS/2. The ULTRA 485 appears to the host system as a standard COM: port requiring no special drivers or additional software. We include our Advanced COM drivers for Windows 95/98/ME/NT/2000 and XP providing IRQ sharing, Windows serial diagnostics, and other enhanced features. Our Linux and QNX utilities are also included to simplify installation.

1 PORT ISA RS-422/485/530 Back to 1 Port

View The 3055 User Manual (PDF) Download The Serial Utility Disk

• Automatic control of RS-485 driver enable signal with no software intervention
• Selectable COM: port address
• Selectable and sharable IRQ (2-7, 10-12 and 15)
• Compatible with existing communication drivers
• 16-bit addressing eliminates I/O conflicts
• 16550 buffered UART standard
• Full array of enhanced UART options
• Data rates to 115K bps (Custom data rates available)
• Selectable termination, echo mode, two/four wire operation
• EIA-530 DTE pin-out on DB-25P connector providing RTS, CTS, DCD, DSR and DTR
• Pin-out is configurable to ensure compatibility with Sealevel Systems’ SIO-485 card Part 3054
• Includes Windows Advanced COM: drivers, utilities, INF files and help files to simplify installation