Title:
BACKUP SYSTEM OF SEQUENCE CONTROL
Document Type and Number:
Japanese Patent JPS5938801
Kind Code:
A
Abstract:
PURPOSE:To make it possible that an auxiliary controller follows completely the operation of a faulty main controller, by allowing the data base transferred to a corresponding switching part to include command information to another main controller after the control operation of the main controller. CONSTITUTION:The data base, which includes command information to a main controller MDC2 or MDC1, just after the control operation is transferred from the main controller MDC1 or MDC2 to a variable memory RAMs1 or RAMs2 of a corresponding switching part SW1 or SW2. If a trouble occurs before the transfer of the data base, an auxiliary controller BDC starts the substituting operation retroactively to the time of the preceding transfer of the data base. If a trouble occurs after the transfer of the data base, the auxiliary controller BDC starts the substituting operation retroactively to the time of the transfer of the data base even if the command transmission is already performed.
Inventors:
MOCHIZUKI KIYOSHI
IZUMINA TATSUYA
ABE TOORU
KAJIURA KOUICHI
IZUMINA TATSUYA
ABE TOORU
KAJIURA KOUICHI
Application Number:
JP15054482A
Publication Date:
March 02, 1984
Filing Date:
August 30, 1982
Export Citation:
Assignee:
YAMATAKE HONEYWELL CO LTD
International Classes:
G05B7/02; G06F11/20; (IPC1-7): G05B7/02
Domestic Patent References:
| JPS5790701A | 1982-06-05 |
Attorney, Agent or Firm:
Masaki Yamakawa