Pressure Systems, Inc. Model 9116 User’s Manual
Page 13
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2.3.5
Diagnostic Port Hookup
Each
NetScanner
™
System
module contains a Diagnostic Port that supports diagnostic and
operational functions. The Diagnostic Port has only a simple RS-232 asynchronous serial
interface. The connections are made via certain pins of its common circular connector. Cable
connection should be made according to
Table 2.1
.
Table 2.1
Diagnostic Port Wiring
NetScanner
™
System
Diagnostic Port Connector
GND
Tx
Rx
The RS-232 interface is capable of supporting simple asynchronous communications with fixed
parameters of 9600 baud, no parity, 8 data bits, and 1 stop bit. Only communication cable
lengths less than 30 feet (10 m) are recommended.
The
Model 9116
uses the diagnostic interface for optional configuration and diagnostic
purposes only. The diagnostic port functions on the
Model 9116
is generally not required by the
end user. Standard cables for this module do not include diagnostic port connections.
2.3.6
Pressure
Connections
All pneumatic connections to
Model 9116
are found on the instrument top panel. The function
of each input port is clearly engraved or printed next to each input. Connections are through
bulge tubing, compression fittings, or special user-supplied fittings on the tubing plate. All
pneumatic inputs to the
Model 9116
should contain only dry, non-corrosive gas.
All
Model 9116
standard Intelligent Pressure Scanners are supplied with the purge/leak check
calibration manifold. Through software commands, this valve may be placed in one of four
positions;
RUN
,
CAL
,
PURGE
, or
LEAK-CHARGE
. Pneumatic input requirements for these
four operating positions are described in the following sections.
