Rockwell Automation FactoryTalk Scheduler Users Guide - Manual (Page 96)

F ACTORY T ALK S CHEDULER U SER ’ S G UIDE
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the third column show the relative percent of change between the two schedules using the
base schedule as the base for comparison. Using these measures, you can determine
whether the current schedule is better than the base schedule.
In our example, it appears that the baseline schedule is better, based on the fact that we
have one fewer late job. However, you might want more detailed information on the
schedule changes before you make this judgment. This information is available in the six
panels in the lower portion of the Baseline Comparison window, where you’ll find
information on the orders where changes have occurred. These panels are separated into
three categories: Late in Baseline (the top two panels), Early in Baseline (the middle two
panels), and Ontime in Baseline (the bottom two panels). The two Late in Baseline panels
include: Now Early and Now Ontime. The two Early in Baseline panels include: Now
Late and Now Ontime. The two Ontime in Baseline panels include: Now Late, and Now
Early. The panel for the Ontime in Baseline, Now Late orders is shown below. It lists the
order name, order due date, and the time difference between the current schedule and the
base schedule for the jobs that were late in the base schedule and are now ontime in the
new schedule.
Simulation scheduling
Now clear the planning board (unallocate all orders) and select the Sequence > Simulate
menu option to schedule the orders using simulation. The rules used by the simulation to
create this schedule are the defaults: Earliest End Time for the resource rule, Highest
Priority for the lot or operation rule, and Schedule File Order for the tie break rule. Later
we’ll show you how to change these rules.
Checking the Baseline Comparison window will show 12 fewer late jobs (21 late jobs)
from the previous schedule and 11 fewer than the original schedule. At this point, you
might want to consider different simulation rules.
Simulation setup
The BizBikes tutorial database assumes the default simulation rules. However, there may
be times when you will want to change these rules. There are two basic ways to change
the simulation setup. The first method will result in temporary changes that are not saved