Title:
PROGRAMMABLE CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2006/011583
Kind Code:
A1
Abstract:
While a microcomputer (100A) is executing a process of self-diagnosis A, the second diagnosis pulse output means (110B) of a microcomputer (100B) of a system B is not used at all. At this moment, the microcomputer (100B) of the system B does not execute any processes related to at least the self-diagnosis A. Thus, the independencies of the diagnostic processes (self-diagnoses A/B) can be ensured by shifting the timings from each other at which to output the diagnosis pulses between the systems A and B. Accordingly, the self-diagnosis A can be used to simply test, from the side of the system A, the independencies of the systems A and B. Additionally, the first diagnosis pulse output means (110A) outputs a first group of diagnosis pulses in parallel at the same time. Thus, there is no need of performing a cyclic control of external input devices, so that the independencies of the systems A and B can be tested in a short time.
Inventors:
KATO SATOSHI (JP)
ARAKI TSUTOMU (JP)
ARAKI TSUTOMU (JP)
Application Number:
PCT/JP2005/013904
Publication Date:
February 02, 2006
Filing Date:
July 22, 2005
Export Citation:
Assignee:
TOYODA MACHINE WORKS LTD (JP)
KATO SATOSHI (JP)
ARAKI TSUTOMU (JP)
KATO SATOSHI (JP)
ARAKI TSUTOMU (JP)
International Classes:
G05B9/02; G05B19/05
Foreign References:
| JPH08221116A | 1996-08-30 | |||
| JPH11259101A | 1999-09-24 | |||
| JP2005044074A | 2005-02-17 |
Other References:
D.S. SIKORA ET AL.: "EMERGENCY SHUTDOWN SYSTEM", BICYCLING SCIENCE, 11 September 1989 (1989-09-11)
"BICYCLING SCIENCE", CAMBRIDGE MIT PRESS, pages: 23 - 27
See also references of EP 1785791A4
"BICYCLING SCIENCE", CAMBRIDGE MIT PRESS, pages: 23 - 27
See also references of EP 1785791A4
Attorney, Agent or Firm:
Kobayashi, Osamu (19-13 Kanayamacho 1-chome, Atsuta-k, Nagoya-shi Aichi, JP)
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