Systems applications that demand better performance and greater flexibility may require processing power beyond the logic controller, such as that offered by a Single Board Computer. The Single Board Computer is a full-featured complement to the Series 90-70 PLC, working in parallel with the logic controller for improved performance.

The Single Board Computer (SBC) features a Celeron™ 300 MHz processor for embedded applications. The Celeron processor has 32-bit addressing and a 64-bit data bus. Its superscalar architecture allows three instructions to be executed per clock cycle. The SBC is ideal for applications that require additional processing such as process intensive calculations, operator interface (Human Machine Interface), additional serial ports, and other multiple processing applications.

Application Benefits

•  The SBC operates independent of the Series 90-70 logic controller and therefore can process data in parallel to the logic controller.

• The SBC supports a Super VGA controller for high-resolution graphics and multimedia quality. In addition to the Super VGA controller, the SBC has a combined PS/2 keyboard and mouse connector. A Y-adapter cable is included.

• Connecting to a network is easy using the embedded Ethernet network. 10BaseT and 100BaseTX options are supported via an RJ45 connector.

• There are two 16550-compatible serial ports featured on the SBC front panel. The serial channel has 16-byte FIFO to support baud rates up to 56 Kbps.  Requires (2) micro-DB9 to standard DB-9 adapters.

• Four 32-bit mailboxes are available and accessible from both the microprocessor and the VMEbus, providing inter-processor communication. The mailboxes have the ability to interrupt the microprocessor when accessed by VMEbus, and VMEbus interrupts may be generated on mailbox access for the SBC.

• The SBC is available with a variety of operating systems such as Windows NT, Windows Embedded NT and Windows 2000 to match your application needs.

 Product Features

•  Microprocessor

  The SBC uses the Intel Celeron processor with MMX  to VMEbus, offering processor speed of 300Mhz. A dynamic branch prediction unit, separate instruction and data caches, and MMX technology also increase the Celeron processor’s performance. The Celeron processor provides on-chip 128 Kbytes of L2 cache using dual independent bus architecture for high bandwidth and performance. The L2 cache operates at the same clock frequency as the processor, thus improving performance.

•  Memory

The SBC accepts 144-pin SDRAM SODIMM for a maximum memory capacity of 256 Mbytes (SBC comes with 32 Mbytes). The SBC has 32 Kbytes of battery-backed SRAM. The SBC provides up to 192 Mbytes of IDE CompactFlash memory (SBC comes with 96 Mbytes) accessible through the IDE port. The BIOS includes an option to allow the board to boot from the Flash memory.

•  Expansion Sites

The SBC supports a PMC IEEE P1386 common mezzanine card specification with a 5 VDC PCI mezzanine card expansion site. The PMC site provides for standard I/O out of the VMEbus front panel and I/O connection to the VMEbus P2 connection. A PC MIP expansion site is also available for type II front panel I/O PC MIP modules.

For more information, download the new Single Board Computer data sheet.