Method and apparatus for displaying segments of a ladder diagram

Details Method and apparatus for displaying segments of a ladder diagram Method and apparatus for displaying segments of a ladder diagram

1989-08-25

1992-06-30

Shaw, Dale M.

Boots, shoes, and leggings

364146, 364147, G06F 900, G06F 314

Patent

active

051269562

ABSTRACT:
An apparatus for displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from a numerical control device to a machine and signals from the machine to the numerical control device. A display unit displays the sequence program in the form of a ladder diagram made up of relays. The pictures of ladder diagrams in the sequence program which are displayed on a screen are generated by pattern and character information stored in a character generator. The identification of a relay of interest or the memory address storing the state of the relay is entered, an item of sequence data indicating the conditions which turn the relay on are selected, and a ladder diagram segments indicative of the conditions are displayed on the basis of the sequence data.

REFERENCES:
patent: 3944984 (1976-03-01), Morley et al.
patent: 3964026 (1976-06-01), Yamauchi et al.
patent: 4038533 (1977-07-01), Dummermuth et al.
patent: 4244034 (1981-01-01), Cherba
patent: 4385367 (1983-05-01), Nakao et al.
patent: 4415965 (1983-11-01), Imazeki et al.
patent: 4425630 (1984-01-01), Yomogida et al.
patent: 4441161 (1984-04-01), Sasaki et al.
patent: 4445169 (1984-04-01), Wakita et al.
patent: 4991076 (1991-02-01), Zifferer et al.
patent: 4994957 (1991-02-01), Komiya et al.
European Search Report for EP 89194, Search Report published Oct. 9, 1985, based on application No. 83301349 filed Mar. 11, 1983.
"Logitrol 500" Programming Manual, General Electric Co., Bloomington, Ill. Jan. 1977, pp. 1-30.

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