DISTRIBUTED LOGIC CONTROL SYSTEM AND COMMUNICATION LOOP

摘要

The present invention provides a method of passing data between a plurality of work stations and an orchestrater computer comprising the steps of transmitting a first data byte from said orchestrater computer to said plurality of work stations along a communication loop, said first data byte directing said plurality of work stations to down load said data; transmitting a second data byte from said orchestrater computer to said plurality of work stations indicating a number of data bytes which will be made available for passing said data to said orchestrater; transmitting a third data byte from said orchestrater computer to said plurality of work station indicating a particular work station which is to down load said data; and transmitting a station data byte from said particular work station to said orchestrater.