Title:
COMMUNICATION CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPH01152841
Kind Code:
A
Abstract:
PURPOSE:To prevent part of data from being lost by sending a data once to a communication station with slow data processing speed when a communication station with fast data processing speed receives a data from the communication station with slow data processing speed for the plural number of times, and allowing the communication station with slow data processing speed to place priority the reception over the transmission. CONSTITUTION:When the plural number of times of communication is applied from a controller 1 to a teaching box 5, one communication is applied from the teaching box 5 to the controller 1 and the interruption processing is applied to the controller 1 to place the priority of reception interruption over the transmission interruption. When the data processing is retarded by other processing such as arithmetic processing, and a reception interruption and transmission interruption are supplied to the interruption controller 18, the reception interruption is inputted to a CPU 2 to execute the reception processing earlier. Thus, even when the data processing is retarded at the controller side 1, so long as the reception processing is not finished, since the transmission to start communication to the controller 1 is not implemented, the loss of data is evaded.
Inventors:
SHIRAE TAKASHI
Application Number:
JP31080787A
Publication Date:
June 15, 1989
Filing Date:
December 10, 1987
Export Citation:
Assignee:
KOMATSU MFG CO LTD
International Classes:
H04L29/08; H04L13/00; H04L29/02; (IPC1-7): H04L13/00
Attorney, Agent or Firm:
Masaaki Yonehara (1 person outside)