Programmable controller with intelligent positioning I/O modules

Details Programmable controller with intelligent positioning I/O modules Programmable controller with intelligent positioning I/O modules

1982-09-20

1985-04-09

Ruggiero, Joseph F.

Boots, shoes, and leggings

364167, 364174, 364200, G06F 1546

Patent

active

045105650

ABSTRACT:
A programmable controller for closed-loop positioning control has a main processor unit, and an I/O interface rack in which a master I/O positioning module and three satellite I/O modules are mounted and connected to servomechanisms to control motion along three axes of a controlled machine. Move data is transmitted from the main processor unit to the master I/O positioning module in data blocks, with the number of transmissions varying, depending upon a mode of axis coupling that is used in controlling the particular machine. The master I/O positioning module converts move data from a user program format to a binary format and transfers it to the satellite I/O modules, each of which performs closed-loop positioning control of a respective axis of motion. The processor on each satellite I/O module also determines a position prior to the end of each move to apply a user-programmed deceleration when needed to blend moves having different velocities.

REFERENCES:
patent: 3727191 (1973-04-01), McGee
patent: 4038533 (1977-07-01), Dummermuth
patent: 4228495 (1980-10-01), Bernhard et al.
patent: 4293294 (1981-10-01), Struger et al.
7100 CNC System commercially offered by Allen-Bradley Co., as illustrated in Publication 7100-1.1-Oct. 1980.
1771-M1 Master Positioning I/O Module and 1771-OJ Stepper Control Satellite I/O Module commercially offered by the Allen-Bradley Co.
"This is . . . Programmable Motion", Gould, Inc., Modicon Division, date unknown.
Lytle, Vincent A., "Closed Loop Position Control with a Programmable Controller", 25th IEEE Machine Tools Conference, Oct. 20-22, 1981, pp. 23-38.
Jurgen, Ronald K., "Industry's Workhorse Gets Smarter", IEEE Spectrum, vol. 19, No. 2, (Feb. 1982), pp. 34-38.

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