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JaNets In structio n Manual 7. Program Editor 7- 152 Feed back option This option a llows you t o specify w hether to per form the feedbac k process with the “ tact sim ula- tion, ” and set the opt ion s for this feed b …
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(4) Pick Data
1) Pick Distribution
When a machine is specified in the “Machine” cell on the “Pick Data” screen, select
whether to assign data as specified or ignore the specification.
Figure 7.7-6 Pick data
◆
Use manual assignments:
Assigns the specified feeders based on your specifications, and optimizes only feeders to
which “Auto” is specified.
◆ Use manual machine assignments:
Ignores the specified “Bank” setting, and enables only the specified “Machine” setting. In
the example above, although “the feeder position ‘10’ of the second RX-7” is specified,
the “Left Front 10” is ignored and only the setting of “#2(RX-7)” is effective in this case.
The case where the number of machines is 1 is the same as “All is distributed”.
◆ Auto assign all data:
Ignores the specified feeder assignments and optimizes all assignments.
2) Assign several components to each stick feeder
Normally, components used in an old type of stick feeders (that supply one stick feeder
with two or more sticks) are assigned to one feeder for one component type. If you
check this check box when there are stick components whose component types are the
same, they can be assigned to one feeder.
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Feed back option
This option allows you to specify whether to perform the feedback process with the “tact simula-
tion,” and set the options for this feed back process. When you select the “Feed Back” option in the
option selecting area, the following “Feed Back” option screen appears in the option setting area.
* Feedback processing: Performs optimization in consideration of the feeder arrangement be-
tween machines in the decided feedback conditions repeatedly, and outputs the best result in the
feedback.
* A tact time does not change because a feeder is not exchanged between machines when the
conditions of optimization are to fix the feeder and to specify a station since the feedback pro-
cessing considers line balance.
* When “Tray” is selected as the “Packaging Style,” the tact simulation uses the coordinates of the
center point of the component supply device to perform the feedback processing. Therefore,
the actual time of each PWB may be different from the simulation result.
* When the number of component placement positions is small, the error rate becomes higher.
Therefore, when a small number of components are placed on a board, the actual time may be
different from the simulation result.
Figure 7.7-7 Feed back option
When you check this check box, the Optimize
application uses the tact simulator to execute
the feedback process.
Max. Process Time: Enter the time in the
format: hour:minute:second.
Max. Loop Count: Enter the number of
loops from 0 to 100.
Target Difference Time: Enter the time
from 0 to 60 seconds.
* When you check two or more check
boxes, the feedback process is stopped
if any of the conditions indicated with
these check boxes is satisfied.
Line
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Balance option
This option allows you to specify a machine to which components placement points are divided
and assigned, and set the machine balance between 0 and 100 % when components placement
points are divided. If a component run-out error occurs frequently and it takes long time to produce
PWBs actually even though the balance is good as a result of execution of the Optimize applica-
tion, this option is effective. When you select the “Balance” option in the option selecting area, the
following screen appears in the option setting area. Perform the operation 1 or 2 below.
The settings you made are enabled.
This is an ineffective option when the number of machines is 1.
Figure 7.7-8 Balance option
②
Move the slider to
the right or the left
with a mouse to in-
crease/decrease
the value and set
the balance.
①
Enter the desired value in the edit
box directly or use the spin button to
increase/decrease the value.
When you deselect the check boxes of all destination machines,
the system will not assign any component placement point to the
desired machine. The color of the column of a machine to which no
component point is assigned becomes gray.