Figure 45 - efficient precondition use – Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual User Manual
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Rockwell Automation Publication 1756-UM535D-EN-P - November 2012
Chapter 7
Program the Redundant Controller
In addition to using preconditions, try to group instructions that can be
preconditioned by the same instructions together. In this example, the four
preconditions used in the two branches can be combined to precede the two
branches. Doing so reduces the number of precondition instructions from four to
two.
Figure 45 - Efficient Precondition Use
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