Rockwell Automation Arena Packaging Users Guide - Manual (Page 52)

A RENA P ACKAGING T EMPLATE U SER ’ S G UIDE
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Similar to a real system, sensors located too close together (including the automatic
sensors) can cause oscillation and system degradation. For example, if you locate a sensor
at 99% that restarts the upstream machine, this may cause the upstream machine to
oscillate between blocked and working.