Data transfer system for data exchange between two operation pro

Details Data transfer system for data exchange between two operation pro Data transfer system for data exchange between two operation pro

1978-10-26

1981-11-03

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 304

Patent

active

042989280

ABSTRACT:
A data transfer system in which a programmable sequence controller, a computerized numerical controller and a pair of data transfer devices are associated respectively with the controllers. Each of the transfer devices includes a data memory and a first read-out and write-in circuit for exchanging control data between the data memory and the associated one of the controllers. Each of the transfer devices further includes a second read-out and write-in circuit which is enabled to operate when the first read-out and write-in circuit is inoperative, for exchanging control data between the data memory and the other controller, so that the control data is transferred from the sequence controller to the numerical controller, and vice versa.

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