Pc - Scantel; Pc - Labview Configuration Utility; Pc - Labview Development Kit; Pc - Hyperterminal - Scanivalve DSA3217-PTP Series Operation And Service Manual

DSA3200-PTP
PC - UDP
The user may write their own UDP interface using the soft-
ware specification portion of this manual. This interface
should allow the user to:
• Issue commands to any or all DSA-PTP modules on
the network.
• Display returned information or scan data from the
DSA-PTP module(s).
• Write returned information or scan data to the
client/host in UPD format (no handshaking).
• Determine the addresses of DSA-PTP module(s) on
the network.

PC - ScanTel

ScanTel a free communications utility designed by Scani-
valve to communicate with Scanivalve products including
DSA-PTP modules. It is a text based, command line pro-
gram that allows users to connect to a single DSA-PTP
module and modify the configuration variables, upload or
download coefficients and collect data in both TCP/IP and
UDP format.

PC - LabVIEW Configuration Utility

The Scanivalve LabVIEW Configuration Utility is software
package that offers a very intuitive and simple way to
connect to and modify all of the DSA-PTP module's configu-
ration variables. It also allows the user the ability to upload
a configuration file and scan and collect data. The scanning
and data collection is limited to 5Hz due to the graphic
nature of the program. The LabVIEW Configuration Utility
is based on a LabVIEW 2009 runtime which is include with
the installation disk.

PC - LabVIEW Development Kit

The Scanivalve LabVIEW Development Kit is for users desir-
ing to customize a LabVIEW driver for DSA-PTP modules.
The Development Kit is compatible with LabVIEW 8.2, 8.6
and 2009. The LabVIEW Configuration Utility is included
with the Development Kit.

PC - HyperTerminal

HyperTerminal is a Windows program included as part
of Windows 2000, XP and Vista Operating Systems. This
program permits a user to connect to a single DSA-PTP
module, modify the configuration variables, upload or
download coefficients and collect data. HyperTerminal
provides a means for both Serial RS-232 and Ethernet con-
nections. It is a text based command line program.

Zero Offset Calibration

The DSA's internal calibration valve incorporates a zero
offset correction feature (Quick Zero). This feature pro-
vides a simple and quick means to correct for the minor
zero drift problem inherent to piezoresistive sensors. Even
with pressure applied to the Px ports, the calibration valve
can be configured into the 'Quick Zero' calibration mode
which pneumatically shorts the positive and the nega-
tive side of the reference together. At that point, with the
sensor at its natural zero state the offset can be read and
recorded. This can then be factored into the engineering
units and mathematically removed. All this is done in under
10 seconds with the simple command 'CALZ'. In order for
the calibration valve to successfully switch, 90-120 psi of
control pressure must be supplied to the 'CTL SUPPLY' port
(or just 'CTL' on some DSA3218-PTP modules) and the quick
zero jumper must be installed.
Figure 3.3 - Quick zero logic
Absolute pressure modules have a similar zero offset
correction feature. The command 'CALB' can be entered
followed by the current known barometric pressure to per-
form a zero offset calibration of absolute pressure modules.
More information on both the 'CALZ' and the 'CALB' soft-
ware commands can be found in "Calibrate Zero" on page
22 and "Calibrate Barometric Pressure" on page 21
respectively.
Due to the nature of the piezoresistive sensors used in the
DSA-PTP modules, it is recommended that a 'Quick Zero' be
performed at least daily. Performing a 'Quick Zero' more
often will not cause any problems and is encouraged. Keep
in mind, if the temperature of the module changes more
than 3 °C a fresh 'Quick Zero' should be performed.
Zero offset corrections becomes obsolete after several
hours or after the module has changed temperatures so all
zero offset calibration data is stored in volatile memory and
is lost whenever the module power is cycled.
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Section 3: Operation