Sequence control apparatus

Details Sequence control apparatus Sequence control apparatus

1981-05-12

1984-02-14

Smith, Jerry

Boots, shoes, and leggings

364900, 364140, G06F 1546

Patent

active

044320477

ABSTRACT:
A programmable sequence control apparatus comprises a memory device for storing sequence program instructions, an input/output device for introducing input data and delivering output data therefrom, a ladder operation device for carrying out logic operations for a ladder circuit having n lines and m columns in accordance with said program instructions, and a control device for delivering control signals to the ladder operation device. The ladder operation device comprises a first memory device for storing contact data for each column of said ladder circuit, a second memory device for storing branch data for each column of said ladder circuit, and a gate device for executing logic operations for respective lines in each column based on the results of the logic operations executed for corresponding lines in a previous column, and on outputs from the first and second memory devices for delivering results of the operations for the logic operations of a subsequent column.

REFERENCES:
patent: 4025902 (1977-05-01), Nakao et al.
patent: 4217658 (1980-08-01), Henry et al.
patent: 4227247 (1980-10-01), Kintner
patent: 4244034 (1981-01-01), Cherba
patent: 4247909 (1981-01-01), Bradley et al.
patent: 4253141 (1981-02-01), Suzuki et al.

Affiliated with

Also associated with

Rating

Sequence control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sequence control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sequence control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2378064