STRASBAUGH CONFIDENTIAL INFORMATION
1
7AF Version 5.04 Features
04/03/2000 Steve Jacobson
Purpose
Software version 5.04 introduces more flexibility to the way password security operates; it gives additional
wafer tracking information; it upgrades the robot macros for Series 100; and it provides several other new
features. (Since software version 5.03 was not released, the notes for 5.03 are included here.)
Password Security Button by Button
The password security scheme originally defined three security access levels, called Operator, Process, and
Maintenance, and gave each of these levels different access permissions to parts of the 7AF software. Recently
there have been customer requests for modifications to those access permissions. To respond to these requests
and to anticipate future requests, we now permit the customer to determine which access levels give permission
to press different buttons on the various screen displays. The stand-alone program pass7af has been extended so
that the password supervisor can assign permissions to the individual buttons. These permissions are saved in a
disk file. The 7AF grinder program reads and obeys that disk file. For more detail, see the revised document,
“7AF Password Security,” dated 10/11/99.
How to Condition the Work Chucks
There is an optional change to the method of conditioning the work chucks. The cycle normally works like this.
In Part One, called conditioning, the chuck is washed and brushed clean. In Part Two, called rinse, the brush is
removed but the water remains turned-on to wash away any material still on the chuck. Finally, the vacuum is
turned on to dry the chuck. When the spinning stops, the probe is referenced on the chuck. While the probe is
being referenced, the grind seal is deflated.
Machine Variable 18, Condition Chuck Options, is a four-digit number. If any digit is non-zero, it will change
the behavior of the Condition Chuck Cycle, as follows. Add the following values to get combinations of these
options. (Note that these are decimal, not binary, numbers: 100 is one hundred, not four.)
1000 Reference the probe at the start of the cycle, not at the end.
100 Do not use vacuum to dry the chuck. Leave it wet.
10 Left Chuck: Do not use blowoff; Use the second part of the cycle to dry the chuck by turning
off backflush and turning on vacuum. This option is called Left-Off.
1 Right Chuck: Same as the previous option. This option is called Right-Off.
When the probe reference takes place at the start of the cycle, a delay is needed at the end of the cycle to make
sure that the grind seals are fully deflated. If the optional Grind Seal Sensors are installed, they determine the
delay. Otherwise, the software has a brief waiting period.
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