The Abaco Systems IP-OctalPlus485 is a single-wide Type I IndustryPack module that provides eight independent RS-485 serial communication ports for embedded systems requiring expanded asynchronous serial connectivity. Built around the Signetics SCC2698B octal UART, the module integrates 3-character receiver FIFO buffers per channel to reduce interrupt handling latency and improve system responsiveness. Programmable baud rates, bit lengths, parity, and stop bits allow configuration across diverse communication protocols and legacy serial interfaces.
Technical Specifications
• Form Factor: Single-wide Type I IndustryPack
• IndustryPack Standard: ANSI/VITA-4 compliant
• Serial Ports: 8 independent asynchronous RS-485 channels
• UART Chipset: Signetics SCC2698B
• Signaling: DX+, DX–, GND per channel
• Baud Rates: Programmable in 18 steps, maximum 38.4 kbps
• Receiver FIFO: 3 characters per channel
• Transmitter FIFO: None
• Independent Timers: 4 × 16-bit
• Interrupt Sources: 32, maskable, vectored
• Dimensions: 1.8 inches × 3.9 inches
• Weight: 0.06 kg (0.1 lb)
• Power: +5 VDC, 285 mA typical
• Operating Temperature: +10 to +50 °C
• Storage Temperature: –40 to +85 °C
• Humidity: 5 to 95% non-condensing
– Key Features
• Eight independent RS-485 communication channels
• FIFO buffering on receiver side for reduced interrupt latency
• Four independent 16-bit timers for protocol timing and synchronization
• 32 maskable, vectored interrupt sources
• Programmable serial parameters (baud, bits, parity, stop bits)
• Low power consumption at 285 mA typical
• Compact footprint suitable for space-constrained embedded platforms
– Compatibility & Integration
The module complies with ANSI/VITA-4 IndustryPack standards and integrates into compatible carrier systems. Transition modules are available offering rack-mountable and 6U configurations with DB9, 25D, RJ45, and RJ11 connector options. Note: Systems requiring interrupt vector use with carriers lacking ID PROM write capability (such as MVME162) will consume IndustryPack memory space.
