Title:
NUMERICAL CONTROLLER
Document Type and Number:
Japanese Patent JPH03206502
Kind Code:
A
Abstract:
PURPOSE:To perform the communication of data at a high speed with use of a simple program by providing a communication control circuit, an address latch circuit, and a buffer which controls the input/output of the address data. CONSTITUTION:A CPU 1 is provided together with a decoder 2, a buffer 3, a ROM 4, a line driver 5, a line receiver 6, a line driver 7, and a connector 8. The received data are analyzed by a communication control circuit and each circuit is controlled. Then an address latch circuit latches the address of a port memory to receive an access, and a buffer which controls the input of the address data secures the synchronization between the address data and a control signal and an access is given to a two-port memory. Thus the data transfer speed is increased compared with communication of the serial data, and the program load can be reduced.
Inventors:
HASHIMOTO KOJI
Application Number:
JP18492589A
Publication Date:
September 09, 1991
Filing Date:
July 18, 1989
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G05B19/18; G05B19/414; H04Q9/00; (IPC1-7): G05B19/18; H04Q9/00
Attorney, Agent or Firm:
Masuo Oiwa (2 outside)