Title:
SEPARATE TYPE CONTROLLER
Document Type and Number:
Japanese Patent JPS598002
Kind Code:
A
Abstract:
PURPOSE:To improve the redundancy, by facilitating an easy connection between an arithmetic control part and an indication setting part and at the same time delivering an operation output to a process from the indication setting part during an abnormal state or a maintenance state of the arithmetic control part. CONSTITUTION:A/D and D/A converters 15, 23, 17 and 25 are provided at an arithmetic control part 1 and an indication setting part 2 respectively. Then a mutual communication is carried out between the parts 1 and 2 using a data transmission line 14. In addition, a microcomputer 24 is provided at the part 2, and the signal given from a process is supplied and indicate. At the same time, a normal-backup switch 29 is switched to the backup side. Thus it is possible to deliver an operation output directly to the process. Therefore the operation output can be delivered from the part 2 in an abnormal state of a maintenance state of the part 1.
Inventors:
TACHIBANA KOUJI
TAKAYAMA MASANOBU
KOBAYASHI TERUO
TAKAYAMA MASANOBU
KOBAYASHI TERUO
Application Number:
JP11538282A
Publication Date:
January 17, 1984
Filing Date:
July 05, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B11/00; G05B7/02; G05B9/03; (IPC1-7): G05B7/02; G05B11/01
Domestic Patent References:
| JPS52147287A | 1977-12-07 | |||
| JPS57105001A | 1982-06-30 |
Attorney, Agent or Firm:
Katsuo Ogawa
Next Patent: JPS598003