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

1990-05-31

1992-05-12

Lee, Thomas C.

Boots, shoes, and leggings

364921, 3649408, 3649423, 3649425, 364DIG2, G06F 300, G06F 1516

Patent

active

051135027

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.

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