SCIENTIFIC INSTRUMENTS 6290 User manual

SCIENTIFIC INSTRUMENTS, INC.
090-252
HAND HELD PC USER INTERFACE
MANUAL
for
MODEL 6290
TANK GAUGING SYSTEM
Record of Revisions
Rev RFEA # Description Rev by Date Appr by Date
-
A 0569
Initial Release
See RFEA MS 10/24/00
DS 05/25/00

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TABLE OF CONTENTS
1 INTRODUCTION ....................................................................................................1-1
1.1 Connection ....................................................................................................1-1
1.2 Operation....................................................................................................... 1-1
2 CONTROL MODULE USER INTERFACE..............................................................2-1
2.1 Continuous Display Mode.............................................................................. 2-1
2.1.1 Explanation of Values on Screen ............................................................. 2-1
2.1.2 Keys for Operation ...................................................................................2-1
2.1.3 Simulator Mode........................................................................................2-2
2.2 User Menus...................................................................................................2-2
2.2.1 Main Menu ............................................................................................... 2-3
2.2.1.1 Option 1, Regular Display ............................................................2-3
2.2.1.2 Option 2, Basic Units.................................................................... 2-3
2.2.1.3 Option 3, Motor Diagnostics.........................................................2-3
2.2.1.4 Option 4, Serial Link Tests...........................................................2-4
2.2.1.5 Option 5, Maintenance Functions ................................................2-4
2.2.2 Edit Parameters .......................................................................................2-4
2.2.2.1 Option 1, Level (Edit Level Parameters) ..................................... 2-4
2.2.2.1.1 Option 1, Level Scale, Slow Speed......................................2-4
2.2.2.1.2 Option 2, Reference, Interlock .............................................2-5
2.2.2.1.3 Option 3, Drive Control ........................................................2-5
2.2.2.1.4 Option 4, Sensor Trip Points................................................2-6
2.2.2.1.5 Option 5, Alarm Levels......................................................... 2-6
2.2.2.2 Option 2, Temperature (Edit Temp Parameters).......................... 2-6
2.2.2.2.1 Option 1, Calibration Values ................................................2-6
2.2.2.2.2 Option 2, Alarm Levels......................................................... 2-6
2.2.2.3 Option 3, Density (Edit Density Parameters)................................ 2-7
2.2.2.3.1 Option 1, Calibration Values ................................................2-7
2.2.2.3.2 Option 2, Alarm Levels......................................................... 2-7
2.2.2.4 Option 4, System (Edit System Parameters)................................ 2-7
2.2.2.4.1 Option 1, General................................................................. 2-7

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2.2.2.4.2 Option 2, Data Collection (Edit Data Collection) .................. 2-8
2.2.2.4.2.1 Option 1, Profile Settings .............................................2-8
2.2.2.4.2.2 Option 2, Top Scan Settings ........................................ 2-8
2.2.2.4.2.3 Option 3, Profile Start Control ...................................... 2-8
2.2.2.4.2.4 Option 4, Profile Fixed Time......................................... 2-9
2.2.2.4.3 Option 3, Time ..................................................................... 2-9
2.2.2.4.4 Option 4, Software Version .................................................. 2-9
2.2.2.5 Option 5, Modbus (Edit Modbus Parameters) ..............................2-9
2.2.2.5.1 Option 1, Level..................................................................... 2-9
2.2.2.5.2 Option 2, Temperature......................................................... 2-9
2.2.2.5.3 Option 3, Density .................................................................2-9
2.2.2.5.4 Option 4, Configuration (Modbus Configuration)................ 2-10
2.2.2.5.4.1 Option 1, Configure Links...........................................2-10
2.2.2.5.4.2 Option 2, Compatibility Choice................................... 2-10
2.2.2.6 Option 6, Simulator .................................................................... 2-10
2.2.2.6.1 Option 1, Position & Level.................................................. 2-10
2.2.2.6.2 Option 2, Temperature & Density....................................... 2-11
2.2.2.6.3 Option 3, Resistance & Period...........................................2-11
2.2.2.6.4 Option 4, Store Profile........................................................ 2-11
2.2.2.6.5 Option 5, Recall Profile ......................................................2-11
2.2.3 Operator Command Menu .....................................................................2-12
2.2.3.1 Option 1, Enter Manual Mode ....................................................2-12
2.2.3.2 Option 2, Start Cal Run..............................................................2-12
2.2.3.3 Option 3, Enter Auto Mode......................................................... 2-12
2.2.3.4 Option 4, Start Profile................................................................. 2-12
2.2.3.5 Option 4, Start Top Scan............................................................2-12
3 SIGNAL CONDITIONING CARD USER INTERFACE............................................ 3-1
3.1 Continuous Display Mode.............................................................................. 3-1
3.2 Signal Conditioning Card Menus................................................................... 3-2
3.2.1 SCC Main Menu.......................................................................................3-2
3.2.1.1 Option 1, Basic Units.................................................................... 3-2

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3.2.1.2 Option 2, Derived Units................................................................3-2
3.2.1.3 Option 3, Voltages........................................................................3-2
3.2.1.4 Option 4, A/D Converter Menu.....................................................3-2
3.2.1.5 Option 5, Cal Level Sensors ........................................................3-3
3.2.1.6 Option 6, Serial Link Tests...........................................................3-3
3.2.1.7 Option 9, Quit...............................................................................3-3
3.2.2 Edit SC Parameters .................................................................................3-3
3.2.2.1 Option 1, Sensor Trip Points........................................................3-3
3.2.2.2 Option 2, Level Sense DAC Values ............................................. 3-3
3.2.2.3 Option 3, Probe Position ..............................................................3-3
3.2.2.4 Option 4, Software Version ..........................................................3-3
3.2.3 A/D Converter Menu ................................................................................ 3-4
3.2.3.1 Option 1, Calibrate A/D (Calibration Menu)..................................3-4
3.2.3.1.1 Option 1, 100 mV Offset Cal ................................................3-4
3.2.3.1.2 Option 2, 100 mV Gain Cal.................................................. 3-4
3.2.3.1.3 Option 3, 1 V Offset Cal ....................................................... 3-4
3.2.3.1.4 Option 4, 1 V Gain Cal.........................................................3-4
3.2.3.1.5 Option 5, Reset A/D Converter ............................................ 3-5
3.2.3.2 Option 2, Enable Auto-Range ......................................................3-5
3.2.3.3 Options 3, 100mV A/D Converter.................................................3-5
3.2.3.4 Options 4, 1.0 V A/D Converter.................................................... 3-5
3.2.3.5 Option 5, Reset A/D Converter ....................................................3-5

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1-1
1 INTRODUCTION
The Hand Held PC (HHPC) is the most basic user interface for the Scientific
Instruments Model 6290 (M6290) level, temperature, and density gauge. There are
several ways to operate the M6290 after installation, such as via Modbus and the PC-
based User Interface Unit, but the only way to configure the system is with the HHPC.
Calibration parameters and alarm levels must be entered using the HHPC.
1.1 Connection
The HHPC can be plugged directly into the Control Module while on the tank during
maintenance activities, or it can be plugged into the Tank Gauge Interface Module
(TGIM) in the control room. In multi-tank installations, it is only used to communicate
with one tank at a time.
Since the HHPC can be used to operate the M6290, it is a very useful tool when
performing system maintenance. While on the tank, if the control unit box is open,
maintenance personnel may plug directly into the Control Module stack-up. This
interrupts the User Link communication line to the control room and diverts
communications to the HHPC.
When plugging into the Control Module, the HHPC may be plugged into one of the
two RJ11 jacks on the Interconnect card, which is the top card in the Control Module
stack-up. The jack on the right side is for the Signal Conditioning Card, and the jack
on the left is for the Control Module. Plugging into the Signal Conditioning Card
gives access only to the basic quantities such as frequency (from the density meter)
and resistance (from the temperature probe). The values for density and
temperature are not available here, since these calculations are performed in the
CPU card of the Control Module. Plugging into the jack on the left side of the
Interconnect Card gives access to all system values and allows system operation,
such as control of the motor.
1.2 Operation
When the HHPC boots up, it sends out a query command asking for the identity of
the host. If the host is determined to be the Signal Conditioning Card, the HHPC will
branch to the Signal Conditioning Card User Interface menu. If the Host is the CPU
card, it will branch to the Control Module User Interface menu.
The user interface begins in the continuous display mode, where system parameters
are displayed continuously as though the HHPC were the front panel of an
instrument. If the host is the Signal Conditioning Card, the display will be basic
quantities, such as the resistance of the temperature sensor, frequency (and period)
of the density signal, and so on. If the host is the CPU card, the display will contain
information about temperature, density, current probe position, level sensor status,
and other quantities.

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If it is necessary to perform maintenance functions such as changing system
parameters, performing tests, or changing the mode of operation, the operator can
press one of three menu buttons to bring up one of the three system menus. The
resulting menus will be different for the Control Module and the Signal Conditioning
Card. The Control Module user interface will be explained first since this is the
primary system operation point. The Signal Conditioning Card user interface would
normally only be used in diagnostic or troubleshooting activities.

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2-1
2 CONTROL MODULE USER INTERFACE
The operation of the HHPC is through a system of menus; only a few keys are used in
each mode of operation. These will be explained as applicable for each mode.
2.1 Continuous Display Mode
Figure 1 shows a typical display for the Continuous Display mode. The current
values for temperature and density of the liquid are shown along with the current
mode and probe position.
System 6290
-159.45 °C 445.48 kg/m
3
Manual 20.002 m
Stop
Upper: Liquid
Lower: Liquid
LLL: 26.345 Current: N
Alarms:
Figure 1
2.1.1 Explanation of Values on Screen
The value at the top left is the current temperature indicated by the probe, and on
the top right is the current density. Below on the right is the current position of
the probe and on the left is the current mode and direction.
Next is the status of the level sensors, whether they are in liquid or vapor. On
the bottom is the last liquid level (LLL) and whether it is current or not. If the
probe is at the liquid/vapor interface and the current mode is "Auto" so that the
probe can track the liquid level, "Current" will be set to "Y"; otherwise "Current"
will be set to "N". The last line lists 2-digit abbreviations for current alarms.
Alarms are only reported when the system is in Auto, therefore no alarms are
currently listed.
2.1.2 Keys for Operation
There are several keys that can be used to operate the M6290 in this continuous
display mode. The three keys that may be used to drive the probe manually are
the UP arrow, the DOWN arrow, and STOP. The UP arrow causes the probe to
drive in the upward direction. If the probe is stopped, pressing UP one time

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causes the probe to drive up slowly. If UP is pressed again, the probe will
change to medium speed. If it is pressed one more time, it will switch to its
fastest speed. Speed is indicated on the display by the number of vertical
arrows. Slow is indicated by one arrow, while fast is indicated by three arrows.
Pressing UP again with the probe moving up fast will cause the probe to cycle
through its speeds in the opposite direction, from fast to medium, and then from
medium to slow. In this way it will cycle through its speeds from slow to fast, and
then from fast to slow. To break the cycle, press STOP or the DOWN arrow. If
the probe is moving up and the DOWN arrow is pressed, the probe will pause
momentarily and then begin to move down. Pressing DOWN repeatedly will
cycle the probe through its speeds in the downward direction.
There are four keys that may be used to exit the continuous display mode.
Pressing ESC (escape) is the same as pressing MAIN, which will bring up the
main Main Menu. Pressing EDIT will bring up the Edit Menu, and pressing
CMND will bring up the Operator Command menu. All other keys are invalid in
the Continuous Display mode and will be rejected.
2.1.3 Simulator Mode
In the continuous display mode, it is possible to enter a special mode used for
testing and software checkout. The Simulator mode allows the user to enter
artificial values to exercise the full range of possible values that could be reported
to the host computer. The user can also set individual status indicators one at a
time to verify that they are being properly reported.
To enter the Simulator mode, press Shift-8 while in the continuous display mode.
The words “Simulator Mode” will be displayed on the HHPC screen to alert the
user that Simulator Mode is set. It is then possible to set status indicators using
the number keys and the shift key. This is described in more detail in the
Calibration and Corrective Maintenance (090-251) section of the manual.
It is important to realize that any information that is reported to the host computer
by the system while it is in the simulator mode is not indicative of the actual
conditions in the tank.
2.2 User Menus
There are three different menus used to access features and operate the M6290.
Pressing "MAIN" will bring up the main menu for the Control Module. Pressing
"EDIT" allows access to the editing menu, where system parameters may be
changed. Pressing "CMND" allows the user to change system modes. The operator
may initiate a calibration run, start a profile, or simply change to Auto so the system
will track liquid level.
Once inside the menus, use the numbers to choose a menu option, and press Enter
to activate that option. Pressing ESC will take you back to the previous menu, and if

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pressed repeated, eventually back to the Continuous Display Mode. The user must
return to the root level before being able to switch to a different menu.
2.2.1 Main Menu
Pressing "MAIN" on the HHPC keypad brings up the Main Menu. The Main
Menu provides access to various system displays and maintenance functions.
2.2.1.1 Option 1, Regular Display
This option gives the regular display for the 6290 and is the default display on
power-up. This display shows the measure of temperature and density, along
with probe position and other important system quantities.
2.2.1.2 Option 2, Basic Units
This option displays the basic units of the system and is used in
troubleshooting or diagnostic activities. Instead of displaying temperature (a
calculated value), the resistance of the probe is displayed as received from
the Signal Conditioning Card. In addition, the actual counts are shown from
the A/D converter. Instead of displaying density, the period and frequency of
the density signal are shown. (Period is used in calculating density.) The
status of the level sensors and bottom reference is shown as a one or a zero.
For the level sensors, a one indicates that the sensors are in liquid, and a
zero indicates that they are in vapor. For bottom reference, a one means that
the bottom reference switch is activated; a zero means that it is not.
Other quantities displayed include the level sensor voltages, the temperature
of the circuit boards, and a backup reading of the voltage of the temperature
sensor in the probe.
2.2.1.3 Option 3, Motor Diagnostics
This option is another continuous display option that is used when evaluating
the performance of the motor drive mechanism. As in the regular continuous
display, the current mode of operation is displayed here, along with the
current direction and speed (if the probe is not stopped). In addition, several
pertinent quantities are displayed. The number of motor pulses from the
bottom of the tank is displayed. This is the quantity that is used to calculate
the current probe position. The reel feedback count (RFB count) is the
number of pulses the motor traveled before the reel feedback switch changed
states (either entering or leaving the magnetic field of one of the magnets).
Each time a magnet on the take up reel passes under the reel feedback
switch, a switch closure is generated. If this state change is not detected
within a certain number of motor pulses, a reel feedback alarm is generated.
The states of the level sensors and the state of the bottom reference switch
are shown as well here for convenience.

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2.2.1.4 Option 4, Serial Link Tests
This option brings up another menu that is used primarily in development and
testing of the system. It could also be useful for troubleshooting
communication problems. In the Serial Link Tests menu, option 1 (Manual
String Entry) allows individual commands to be sent to the host. Familiarity
with the internal command structure of the host is necessary for this option.
Option 2 (Constant String Out) sends a fixed query command to the host.
Option 3 (Input Only) receives the answer to a query sent such as in option 2.
Option 4 enters another continuous display mode that sends the shortest
possible query and receives the shortest possible answer. This is useful for
analyzing communication signals with an oscilloscope.
2.2.1.5 Option 5, Maintenance Functions
This option brings up another menu that is used to access certain
uncommonly used maintenance functions. In the Maintenance Functions
menu, option 1 is "Cal level sensors." Selecting this option will cause a
command to be sent to the Control Module to adjust the D/A converters
(DAC’s) until the level sensor voltage is 2.5 V. This should only be done by
maintenance personnel following the applicable procedure. This is typically
done one time when the unit is installed. The second option in the
Maintenance Functions menu is "Force Host Exit." This should not be chosen
because this will cause the host program to exit and the 6290 will no longer
be operational; this step is only necessary when re-programming the host. If
this option should be chosen by mistake, it will be necessary to remove and
re-apply AC power to reset the host processor. Option 3 is “Configure Links.”
This option is explained in the Edit Modbus Configuration section, since this
option is also available there.
2.2.2 Edit Parameters
Pressing "EDIT" on the HHPC keypad brings up the Edit Parameters menu. The
Edit Parameters menu allows access to all system parameters that may be
changed by maintenance personnel. The first option on the Edit Parameters
menu is for editing level parameters.
2.2.2.1 Option 1, Level (Edit Level Parameters)
This option brings up the "Edit Level Parameters" submenu.
2.2.2.1.1 Option 1, Level Scale, Slow Speed
This option gives allows the user to edit level scale and slow speed. Level
scale is the distance in millimeters that the probe travels with each pulse
of the motor. Slow speed is the number of milliseconds between each
pulse when driving the probe is slow.