Waters 717plus - Page 97

Running Autosampling 97
4
Programming Step Functions
To program step functions:
1. Display the Edit: Step Function screen by pressing Step Function on the Edit:Auto
Run screen.
The currently selected step number appears on the Edit: Step Function screen.
Editing Step
2. To change the step number, enter a new number on the keypad and press Enter.
Needle Position
3. Move the cursor to the Needle Position% line. This determines needle withdrawal
position. Use the right/left arrow keys to select the desired position of 25, 50, 75, or
100%. Default is 100%.
The picture of the vial displayed in the upper-right corner of the screen shows the
selected needle position.
Purge After Step
4. If desired, move the cursor to Purge After Step?, and select
Ye s
. Default is No.
Step function purges use the Purge Parameters set on the Purge and
Compressibility screen. For information on setting the Purge Time, refer to
Section 4.5.2,
Performing a Purge.
Option
5. Move the cursor to the Option? field, then use the arrow keys to select the option
for the step. The default is None.
Note: If you select None to disable an option, you delete all information
programmed for the option. To disable the option without deleting, display the option
screen and set the option to No.
6. Program the option for the step. For information on programming the options, refer
to:
• Section 4.6.3,
Using Auto Standards
• Section 4.6.4, Using Auto Addition
• Section 4.6.5, Using Auto Transfer
Note: You can program a different option for each step (not multiple options per
step).
Event Output
7. Program the event output for the step (see Section 4.6.6,
Programming the Event
Output).