5. Input command SRSTART and wait several seconds. This command
resets the PM500 as would a hard reset. If this command is issued
through PCS the response through PCS will be that the “Operation
Failed”. This is normal and correct since the command reboots the
controller thus making it momentarily unavailable to GPIB queries.
NOTE
The SDEFEE and SRSTART commands should only be issued
once per controller at the beginning of the tuning processing and
not between tuning each axis board.
6. Auto-Zero the stage: Issue command <axis>AZ. Do not touch or
disturb the stage or tables during the Auto-Zero.
NOTE
Replace
<axis>
with
the
letter
that
corresponds
to
the
axis
controller being tuned. For example: if tuning a 4L stage in the
Y-slot, enter YAZ as the command. The controller slots are
assigned as X Y Z A B C from left to right looking from the front
of the controller. Be sure to use the correct assigned alphabet to
avoid moving and damaging the wrong stage.
7. Wait 45 seconds until the Auto-Zero routine is complete. Then
confirm
it
is
complete
by
entering
t
he
command:
<axis>STAT?
and
observe
that
the
commands
returns
the
<axis>D
response.
If
the
stage
is
still
busy
<axis>B
will
be
the
response.
8.
Once
the
Auto-Zero
is
complete,
use
the
<axi
s>AZVAL?
Command to query how well the stage is finding its position.
9. Once the <axis>AZVAL? Command has been issued, PCS will
response with a number for each axis. The number will be in the form:
<axis>D$000004FF. The D signifies the Auto Zero was done, if the
Auto Zero is not finished there will be a B instead. In the number that
follows we are only interested in the last two pairs of numbers (or
letters). In this example 04 and FF are the pair in which we are
interested. These two pairs of digits tell us whether the stage is
performing properly. Another possible value would be D$0000FC03.
Below
is
a
list
of
allowed
values
for
the
<ax
is>AZVAL?
response,
if
either of the last two pair of digits do not match the ones listed below,
tuning is necessary.
