High Speed Communications Card
Interface to Fanuc Controls The High Speed Card (HSC) is a high speed interface system for Fanuc controls where high speed machining applications are needed, such as complex contours, molds, etc. The HSC interfaces to Fanuc's Remote Buffer board via RS-422 using Fanuc's protocol B. Serial Communications The High Speed Machining card has two serial ports, each controlled by an embedded microprocessor that appears as a standard comm port to the PC. Both processors share one interrupt to help the PC conserve interrupts. No special device drivers are needed for the PC. The board is jumper configurable for interrupt number and I/O address. Each port is computer configurable for RS-232 or RS-422 operation. The current default baud rate is 86.4kbps with seven data bits, even parity, and two stop bits. The current protocol offered is Fanuc protocol B, with plans to expand the protocols and features in the future. The on-board firmware can be upgraded by a software utility program, no need to take anything apart or replace chips. Working with WinDNC The protocol in implemented by Greco Systems GNserver as a standard serial port to transfer data between the HSC and the computer. Buffer Each port has a 32KB buffer for storing data to be sent out to the Fanuc Remote Buffer to ensure that no dwells occur in the stream of data. Speed It is capable of sending data at speeds up to 86,400 bits per second (BPS) for real-time machine execution. Standard PC ISA Card The HSC board is a standard PC ISA expansion card which plugs into the ISA bus on any PC compatible computer. |
