Title:
CONTROLLER WITH SELF-INSPECTING FUNCTION
Document Type and Number:
Japanese Patent JPH0969009
Kind Code:
A
Abstract:
To provide a controller with the self-inspecting function which causes no problem even if entering an inspection mode for some reason while the control unit is actually used.
This controller with a self-inspecting function which executes a program for inspection previously built in the control unit 70 through specific input operation and supplies output signals showing the inspection result to specific loads 71-74 connected to the controller supplies pulse signals W1-W4, which have time width enabling loads 91-94 for inspection that are slower in response speed than the specific loads 71-74 to respond and operate although the specific loads 71-74 do not respond and operate, as the output signals.
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Inventors:
MATSUZAKI HIDEAKI
Application Number:
JP24518395A
Publication Date:
March 11, 1997
Filing Date:
August 31, 1995
Export Citation:
Assignee:
ZEXEL CORP
International Classes:
G01D21/00; G05B23/02; (IPC1-7): G05B23/02; G01D21/00
Attorney, Agent or Firm:
Masatoshi Takano
Next Patent: CENTRAL MONITOR AND CONTROL SYSTEM