Method and apparatus for saving and performing industrial contro

Details Method and apparatus for saving and performing industrial contro Method and apparatus for saving and performing industrial contro

1986-11-20

1990-07-17

Zache, Raulfe B.

Boots, shoes, and leggings

36492792, 36492796, 364935, 364940, 36494071, 36494061, 36494062, 3649452, G06F 1300, G06F 1314, G06F 940

Patent

active

049425528

ABSTRACT:
A communications system for industrial controllers includes interface controllers which implement a remote command capability. The remote command feature allows conventional communications commands to be saved at a responding interface controller in a remote command table and performed at a later time. A "SAVE" type remote command includes an ID field and an embedded command. The embedded command is stored in the remote command table at a location corresponding to the ID field. The ID field is used to access the embedded command in subsequent remote commands. A "PERFORM" type remote command contains a string of ID's, which indicates which saved commands are to be performed and the order in which to perform them. When a PERFORM command is received, the conventional command stored in the remote command table is recalled and transmitted onto a communications network. The PERFORM command can be addressed to a single interface controller, or it can be broadcast to all interface controllers in the communications system. Remote commands are also provided to examine and delete remote command table entries at a responding interface controller.

REFERENCES:
patent: 3676846 (1972-07-01), Busch
patent: 4298959 (1981-11-01), Sundermeyer
patent: 4449182 (1984-05-01), Rubinson et al.
patent: 4456957 (1984-06-01), Schieltz
Binary Command Language (BCL) for Data Highway II (DHII), Bruce Crockett, 2/26/85, p. A-25:A-26.

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