Title:
SWITCHING DEVICE
Document Type and Number:
Japanese Patent JPS57139802
Kind Code:
A
Abstract:
PURPOSE:To prevent a reset forgetting error and a display error such as a reverse state display, etc., which are apt to occur when a test has ended, etc., by obtaining the information and output regarding the transition of a display output switching state of a switching state. CONSTITUTION:In case when automatic operation has been siwthed and transferred to manufal operation, inputs A1, A2 of an IC 25 are always in an L level, a switching signal (L level) is applied through an IC 23 and an IC 24 to an input B of the IC 25 by a changeover SW 22, and this input B is changed to an L level from an H level before switching. Even if the input B is changed to the L level from the H level, an output Q is not changed, and the H level is continued. On the other hand, in case when the manual operation has been swithed and transferred to the automatic operation, inputs A1, A2 of the IC 25 remain unchanged, and the input B is changed to the H level from the L level since the contact 22 is opened. The output Q obtains an instantaneous L level output, becomes a switching transition output signal 27, is inputted to a switching state transition output part 14, and a transition output is fetched.
Inventors:
SASAKI FUMIO
Application Number:
JP2488881A
Publication Date:
August 30, 1982
Filing Date:
February 24, 1981
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G05B9/03; G05B7/02; (IPC1-7): G05B23/02