Waters Alliance e2695 Operator's Manual page 55

3.3.2.5 Controlled by Operate Gradient by Event In mode
In this mode, an external autosampler (a Waters 2700 Sample Manager, for example) initiates the
start of a chromatographic run and performs the inject function (instead of the separations
module). The separations module has no control of IEEE-488 devices, but can control non-IEEE
devices using the I/O connections on its rear panel. See
information on I/O connections.
To set the separations module to the Operate Gradient by Event In mode:
1. Select the System field in the Configuration screen, and then press Enter to display a list of
operating modes.
2. From the list of operating modes, select Operate Gradient by Event In, and then press
Enter.
3. Press the Events In screen key to display the Events In dialog box.
Tip: For information on defining Events In conditions, see
4. Set the Stop Flow field to the appropriate condition (Ignore, High, or Low), and then press
Enter.
• Choose Ignore if the Stop Flow I/O terminals of the separations module are not used.
• Choose High if the output connection from the external autosampler to the Stop Flow
I/O terminals of the Separations Module changes to a high (more positive) TTL-level.
• Choose Low if the output connection from the external autosampler to the Stop Flow
I/O terminals of the separations module changes to a low (more negative) TTL-level.
5. Set the Hold 1 field to the appropriate condition (High or Low), and then press Enter.
• Choose High if the output connection from the external autosampler to the Hold 1
Inject terminals of the separations module changes to a high (more positive) TTL-level
to initiate a chromatographic run (and prevent an injection by the separations module).
• Choose Low if the output connection from the external autosampler to the Hold 1 Inject
terminals of the separations module changes to a low (more negative) TTL-level to
initiate a chromatographic run (and prevent an injection by the separations module).
Requirement:
Sample Manager, select Low.
6. Set the Logic field to Or, and then press Enter.
7. Set the Hold 2 field to Ignore, and then press Enter.
8. Press the OK screen key to save your selections.
3.3.2.6 Controlled via RS-232 (ASCII) or (binary) mode
In these remote control modes, a non-Waters data system (a mass spectrometry system, for
example) controls the separations module using RS-232 ASCII or binary communications. The
separations module disconnects from the Ethernet or IEEE-488 interface bus when either of these
modes is selected. The separations module can control other non-IEEE devices in the HPLC
system using the I/O connections on the rear panel. See
information on I/O connections.
If you are configuring the separations module with a Waters 2700
February 27, 2018, 715003794 Rev. C
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"I/O signal connections" on page 208
"Events in" on page
"I/O signal connections" on page 208
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for