Title:
DATA TRANSFER APPARATUS
Document Type and Number:
WIPO Patent Application WO/1998/052108
Kind Code:
A1
Abstract:
A data transfer apparatus wherein a double switch system is adopted for safety. Two pieces of data inputted through a switch to a DI/DO control circuit (2) for peripheral devices are converted into serial data by circuits (Ar, Br), and the converted serial data are combined into a single piece of serial data by a circuit (Cr). The serial data is sent to a communication control section (1) of a CNC via a transmission line (3a). The section (1) divides the received serial data into two pieces of serial data, and converts each of the divided pieces of serial data into parallel data.
Inventors:
KINOSHITA JIRO (JP)
KUMAKURA TATSURO (JP)
HIROHAMA HIDEYUKI (JP)
KUMAKURA TATSURO (JP)
HIROHAMA HIDEYUKI (JP)
Application Number:
PCT/JP1998/002076
Publication Date:
November 19, 1998
Filing Date:
May 11, 1998
Export Citation:
Assignee:
FANUC LTD (JP)
KINOSHITA JIRO (JP)
KUMAKURA TATSURO (JP)
HIROHAMA HIDEYUKI (JP)
KINOSHITA JIRO (JP)
KUMAKURA TATSURO (JP)
HIROHAMA HIDEYUKI (JP)
International Classes:
G05B9/03; G05B19/18; G05B19/414; G08B29/16; H04L1/22; H04Q9/00; (IPC1-7): G05B9/02; G08C25/00; H04L1/22
Foreign References:
| JPH07261802A | 1995-10-13 | |||
| JPH01171143U | 1989-12-04 | |||
| JPS63233401A | 1988-09-29 | |||
| JPS5234181A | 1977-03-15 |
Attorney, Agent or Firm:
Takemoto, Shoji (23-10 Toranomon 1-chom, Minato-ku Tokyo, JP)
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