Features 29
1
Interaction with Other LC Modules
The Waters 717plus Autosampler sends and receives signals from other LC modules,
including:
• Inject Start – Occurs when the sample is injected into the mobile phase stream.
Initiates data acquisition, fraction collection, and detector autozero. Contact closure is
initiated by the autosampler.
• Inject Stop – Occurs when the programmed run time expires. Signals data
integrators that the chromatography run is complete. Contact closure is initiated by
the autosampler.
• Hold – Halts the autosampler until the signal changes. Can be used to prevent
sample injections if an LC system module fails or while a data acquisition system is
preparing for the next run. Signal is received from external devices.
• Report Delay – Delays the next injection until a data integrator can complete a report
for the previous run. The delay is a programmable interval that occurs after the Inject
Stop signal.
• Programmable Event – The 717plus Autosampler includes a programmable event
output that can control external devices during a run.
IEEE-488 Bus Communication
As part of a Waters IEEE-488 system, the Waters 717plus Autosampler accepts
programming and control signals from an LC system controller.
RS-232 Communications
The Waters 717plus Autosampler sends data over an RS-232 communication line. The
data is in ASCII format and contains:
VIAL # nn INJ # n OF n
INJ VOL nnnn RUN TIME nnnnn
Purge and Compression
Purge and compression testing capability includes:
• Purge – Fills the sample loop and injection syringe with fresh mobile phase.
• Compression – Tests the sample loop for gas content (compressibility).
Compressibility limits may be set for specific mobile phases. Testing may be
automatic or operator initiated.
To Next Page
Loading...
