MSI 4300/5 User manual

User
Guide
Quality Industrial
Weighing
and Force
Measurement
Equipment
Measurement
Systems
International
PORTA-WEIGH PLUS
CRANE SCALES
5 KEY VERSION
MSI4300/5

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Page 2 MSI-4300 Porta-Weigh Plus/5 Key •User Guide

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 3
TABLE OF CONTENTS
Introduction ............................................................4
Specifications .........................................................4
Features...................................................................5
Unpacking...............................................................6
Battery Removal and Replacement ........................6
Battery ife.............................................................7
Battery Charger.......................................................7
Batteries .................................................................. 8
Optional Alkaline Battery Power .....................8
Keyboard Operations............................................ 10
Keyboard Features .........................................10
Power Switch........................................................ 11
Zero Switch .......................................................... 11
Net/Gross Switch.................................................. 12
Tare In/Tare Out Switch ....................................... 12
To remove the Tare Value............................... 13
Test Switch ...........................................................13
Calibration and Setup ...........................................14
Switch Functions during Calibration & Setup 14
Enabling Calibration and Setup............................ 14
Calibrate Setup Menu ........................................... 15
Standard Calibration ............................................. 15
Fine Calibration .................................................... 16
Cal with Rcal value (Calibrate with the
Resistor Calibration number) ...............................16
To Enable/Disable AZM (Auto Zero
Maintenance) ........................................................17
To Set the egal Standard..................................... 17
Other Setup Functions ..........................................17
Filter ...............................................................17
Auto Off .........................................................17
ighting ..........................................................17
Remote ...........................................................17
Setpoint ..........................................................17
Disable Setpoint .............................................20
Contrast ..........................................................21
To Initialize the Scale ........................................... 21
Infrared Remote Control Option ..........................22
Remote Control Battery Replacement..................23
Infrared Remote Comments .................................24
Proper oading Procedures ..................................26
The MSI imited Warranty .................................. 27

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Page 4 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
INTRODUCTION
The Measurement Systems International Porta-Weigh Plus Crane Scale
represents a new level of technology and performance in the scale industry.
A 6 bit microcontroller coupled with an alphanumeric display gives unprec-
edented versatility and programmability. Advanced power saving circuitry
provides up to 300 hours of operation between charges with the standard sealed
lead acid (SLA) battery and up to 2000 hours of operating time from the
optional “D” cell alkaline batteries. The large, backlit alphanumeric display
provides precise, unambiguous indication of operating modes such as Net and
Gross. Digital calibration simplifies scale maintenance. The single circuit
board, fully shock-mounted and marine-proof construction makes for a rugged
and reliable overhead scale.
6 Digit Weight Indication
8 Character Message Display Units
lb, kg, t, METRIC t
International Motion Icon
Motion Indicator
Center of Zero Icon
Low Battery Indicator
METRIC
AUTOREMOTE ∑
0
MOTION
+
-
"Infrared Remote On" Indicator
"Auto-Total On" Indicator
Minus Sign
SPECIFICATIONS
Accuracy: Class III or IIIL
Operating Temperature:
4° F to 40° F (- 0° C to +60° C)
Enclosure: NEMA IV, IP66 alodined cast aluminum
Safe Overload: 200% of rated capacity
Capacities - pounds (kilograms):
500 (250) 2000 ( 000) 5000 (2500) 0,000 (5000)
20,000 ( 0,000) 30,000 ( 5,000) 50,000 (25,000) 70,000 (35,000)
00,000 (50,000)
Other capacities available by special order or as dictated by standards compli-
ance. MSI has designed and manufactured crane scales up to 500 ton capacity.
Backlit, transflective LCD
provides excellent
readability from full
sunlight to total darkness.
The alphanumeric section
prompts the operator
through setup and
calibration.

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MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 5
Ultimate Overload:
500% of rated capacity except:
25,000 kg unit is 490% of rated capacity
35,000 kg unit is 430% of rated capacity
70,000 lb unit is 475% of rated capacity
50,000 kg unit is 450% of rated capacity
FEATURES
• Designed to meet or exceed all USA, Canadian, United Kingdom, and
International standards.
• Rugged construction throughout. Single printed circuit board is shock
mounted to withstand shocks in excess of 50 G’s. Switches are totally
sealed and rated for over 10 million operations.
• Precise high resolution 20 bit A/D conversion coupled with advanced 16 bit
microcontroller provides world class features and accuracy.
• Six 1.6 inch (40 mm) high digits for clear weight readings from a distance.
• Easy to read annunciation of measurement modes such as NET or GROSS
are provided on eight 0.8 inch (20 mm) alphanumeric characters. Also
used for menu prompts.
• Display illumination uses rugged, long life, light emmitting diode ( ED)
backlighting coupled with a transflective liquid crystal display providing
optimum display contrast under all ambient conditions from full sunlight to
total darkness. Operation is light-sensing automatic or manually set.
• Exceptional battery life: Typically 300 hours of continuous use between
charges provided by the 12V S A battery and 2000 hours of continuous use
is provided by the optional 8 alkaline “D” cell batteries. Maximum battery
life is reduced by use of the backlighting. The Porta-Weigh Plus will
automatically power down when not in use (this feature can be disabled). A
low battery indication appears when approximately 10% of battery life
remains.
• Easy to maintain: Full digital calibration assures reliable, repeatable measure-
ments.
• Complete marine sealing ensures reliable operations under harsh weather
conditions.
• Anti-EMI shielding is standard. ow emissions and susceptibility.
• Easily customized for special applications.
• IR Remote control is available as an option. Adds keyboard tare and other
features.

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Page 6 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
UNPACKING
When unpacking the scale from the shipping container, insure that all parts are
accounted for. Check the scale for any visible damage and immediately report
any damage to your shipper. It is advisable to use the original shipping con-
tainer when shipping or transporting the MSI- 300 Port-A-Weigh Plus.
BATTERY REMOVAL AND REPLACEMENT
1) Turn the MSI- 300 Off.
2) With one hand, hold the battery access door to prevent it from falling.
3) Rotate the two cam lock knobs on the access door counter-clockwise until
the door latches disengage.
) Carefully back the access door out of the battery well.
5) Relese the rubber retaining strap and remove the battery by pulling straight
back.
6) Install a fully charged battery by plugging it in to the exposed battery jacks.
The MSI- 300 will turn on briefly then turn itself off.
7) Reseat the access panel.
8) Turn the cam lock knobs clockwise until the access door is secured. Make
sure the door is firmly in place now, and before each use.
use.

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MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 7
The Battery Access Door and the Sealed ead Acid Battery are potential falling
hazards. When opening the battery access door, be sure to hold the battery to
prevent it from falling.
The Sealed ead Acid Battery contains lead and should be recycled when it has
reached the end of its life.
BATTERY LIFE
The MSI-4300 battery life depends on a number of factors: Brightness of the
liquid crystal display ( CD) and number of segments lit, the use of the light
emitting diode ( ED) backlighting, and the age and condition of the sealed lead
acid battery (S A) . The MSI-4300 will automatically turn the scale off when
the S A battery drops to approximately 10.5V. You must recharge the battery
when this happens. S A batteries do not suffer from memory effects and
actually benefit from frequent rechargings. Recharge the battery whenever it is
convenient even when it still has available life. Due to the small maintenance
discharge imposed on the battery by the MSI-4300 electronics, do not store the
MSI-4300 with the battery inside the scale for extended periods (longer than
7-10 days). Remove the battery from the scale.
attery Use Guidelines
1) Recharge whenever convenient. Do not wait for the scale to shut itself off if
your work situation permits.
2) If you need the scale in continuous operation, keep a fully charged spare
battery at hand. Replace the drained battery as close as possible to the low
battery warning, or earlier.
3) S A Batteries that have not been deep discharged should withstand 500 to
1500 charging cycles.
4) The low battery warning will indicate about 2-4 hours of additional use
before the MSI-4300 turns itself off.
5) If the MSI-4300 is not going to used again soon, remove the S A battery to
prevent deep discharge while the unit is in storage.
BATTERY CHARGER
Each MSI-4300 is shipped with a battery charger designed to charge and
maintain the battery. Exact charging time will depend on the degree of dis-
charge of the battery. A battery removed when the low battery warning first
appears should take about 4 hours to fully charge.

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Page 8 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
Using the Charger
1) Remove the Battery from the MSI-4300. See previous page for removal
instructions.
2) Connect the charger assembly to the AC supply (86-260VAC). The Power
Status light should be green. If the power status light fails to illuminate,
check your AC power connection and make sure the Vin jack is fully seated.
AC power cords suitable for any world location are available from MSI.
3) Plug in the polarized connector to the jacks on the battery.
4) The Charge Status light should turn ORANGE indicating fast charge. If the
status light remains Green when the battery is first plugged in, the battery
may be defective.
5) Charge until the status light turns GREEN.
When the charge cycle is complete you can (and should) leave the battery on
the charger until it is needed. The charger keeps a maintenance float charge on
the battery to ensure the best possible operation times. For scales that are in
high usage, MSI recommends obtaining a spare battery so one can always be on
the charger.
BATTERIES
Optional Alkaline attery Power
8 Standard “D” cells. Alkaline type is preferred, but standard Carbon-Zinc can
also be used. This reduces the available battery life in half. Also Ni-Cad “D”
cells work fine. Ni-Cad battery life varies widely, but should be about one
quarter the equivalent of Alkaline.
Installing/Changing
1) The batteries must have enough charge to ensure accurate operation. If
the batteries are too low, the scale will automatically shut off (8 batteries
in series must total more than 5.4V).
2) Turn the MSI-4300 Porta-Weigh Plus off.
3) Remove the battery tubes by turning the knobs counterclockwise. It is
not necessary to remove both tubes at once.
4) Replace the batteries with four fresh “D” cells in each tube with correct
polarity.
5) Reinstall the battery tubes by inserting the tubes back into the unit and
turning the knobs clockwise.
Note: The batteries can be checked with the Test Mode. Power displayed is in
relative percent (%) of battery life (applies to alkaline batteres only). If the
number with fresh batteries is extremely low (less than 10%), turn off the
power, remove the tubes and check that the polarity of all batteries are correct.

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Page 10 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
KEYBOARD OPERATIONS
T
0
ZERO NET/GROSS TAREPOWER TEST
IN / OUT
1 2 3 4 5
1) POWER
Push to turn the scale on or off.
2) ZERO
Used to zero the scale. Zero range depends on standard.
3) NET/GROSS
When in NET mode, pushing this provides a temporary (4 seconds)
gross weight reading.
4) TARE IN/OUT
When in GROSS mode, pushing TARE will zero any weight on the scale
which causes the scale to go into the NET mode. When in NET mode,
pushing TARE will clear the TARE value and the scale will revert to the
GROSS mode.
5) TEST
When pushed, this causes a display segment check, and provides battery
and RCA tests.
Keyboard Features
• Silicon elastomeric rubber switches provide up to 10 million operations.
Far more rugged than mechanical switches that can withstand excessive
impact without affecting operation.
• Rubber membrane provides watertight and salt spray-proof seal. Addi-
tional poly shield on underlay provides second layer of integrity and
prevents humidity contamination.

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MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 11
OPERATION GUIDE
POWER SWITCH
Function:
Turns the scale On/Off (Toggle action) and prompts user to zero the initial
deadload.
Rules for Use:
1) The batteries must have enough charge to ensure accurate operation or
the scale will not turn on.
2) Ambient temperature must be greater than 14° F (-10° C) and less than
+140° F (+60° C).
Action:
1) Display Check: All segments are illuminated for 1 second.
2) Message displays “MSI PAW+”, numerics give the software version
number for 1 second.
3) During display test and MSI message, all internal operations are checked
and any nonconformance causes an error message to be displayed.
4) UK FT units only: ZERO - User is prompted to push the zero key (-1%
+20% zero range). If the weight is in initial zero range the scale will zero
and start standard operation. If not, the message “UN OAD” appears on
the display and the scale will be inoperable until it is unloaded.
Final:
Unit reads the current weight in the Gross mode.
ZERO SWITCH
Function:
Sets the zero reading of the scale.
Rules for Use:
1) The scale must be stable. The scale will not zero if the motion detect
annunciator is on.
2) The scale must be in the Gross mode. The scale will not zero in the Net
mode.
3) The scale will accept a zero setting over the range of -10% to +100%
(NIST, Alaska & Industrial Standards) or -1% to +3% (UK, Australia,
OIM & Canadian Standards).

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Page 12 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
4) On initial power up, the zero range is 20%.
Action:
The weight reading must be stable within ±1 division. If this condition is
met, the display reads “ZEROED” and the digits display “0” (or 0.0 or
0.00 depending on resolution). The zero setting is stored by the backup
memory, which will restore it the next time the system is turned on.
Final:The display reads “GROSS” and the digits display “0” (or 0.0 or 0.00
depending on resolution).
NET/GROSS SWITCH
Function:
Switches the display between Net and Gross modes temporarily (4 seconds).
Rules for Use:
1) Does not operate in the GROSS mode.
2) NET/GROSS will work even when the scale is in motion.
Action:
• Not in NET mode (Tare = Ø)
No Action, display continues to read the Gross weight only
• In NET mode:
Shows Gross weight for 4 seconds. Display reads “GROSS” then returns
to “NET”.
TARE IN/TARE OUT SWITCH
Function:
Sets and removes Tare.
Rules for Use:
1) Only positive weight readings can be tared.
2) The scale will only tare when it is in the GROSS mode.
3) The motion annunciator must be off, the weight reading must be stable.
4) Setting or changing the tare has no effect on the zero setting.
5) Taring will reduce the apparent over-range of the scale. For example, if a
1000 lb container was tared and the scale capacity is 5000 lb, the scale
will overload at a net weight of 4000 lb plus any additional allowed
overload (usually ~4%) (5000-1000).

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MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 13
Action:
• No current tare is set:
The weight reading must be stable within ±1 division (Motion annuncia-
tor off) and has to be a positive reading. The entire range of the scale can
be Tared. f the motion condition is met the display temporarily reads
“TARE SET” and then converts to a “NET” display and the digits
register Ø. All subsequent readings are deviations from the set Tare value.
Final:
• Tare is set, displaying NET weight.
To remove the Tare Value:
Push TARE. The Tare value is cleared, the scale returns to GROSS mode.
TEST SWITCH
Function:
Provides a functional system test and an on-demand display check without
disturbing the current weighment. Also provides calibration verification in the
form of a load cell calibration number.
Action:
To start the text sequence push TEST.
1) All digits (7 segment and 16 segment) count once from 0 to 9. All
annunciators are tested. 16 segment displays also go through “*”.
2) Battery condition is displayed next in the form: “%” (percent) of battery
life with a figure from 1 to 100 on the digits. Also additional warnings
will be displayed should the battery be below 5%. The % battery life will
vary depending on whether the backlight is on or off. Note: The percent
of battery life is accurate with the “D” cell battery option only. t does
not apply to the standard 12V SLA battery.
3) The “CAL” number is displayed next. To ensure that the Cal number is
accurate the scale must be near zero in the same state that it was cali-
brated in. The original Cal number is printed on the right battery tube
calibration label. Cal number shifts of up to 10 counts are insignificant.
4) nternal tests are performed to further ensure scale integrity.
Final:
Either the reading returns to the last condition, or an error message is displayed.

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Page 14 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
CALIBRATION AND SETUP
T
0
ZERO NET/GROSS TAREPOWER TEST
IN / OUT
1 2 3 4 5
Switch Functions during Calibration and Setu
1) POWER
Use to escape out of calibration.
2) ZERO
Used to zero the scale during calibration or C EAR during setups.
3) NET/GROSS
Used to scroll through menu items. Used in FINE CA as UP.
4) TARE IN/OUT
Used only in FINE CA as DOWN.
5) TEST
Used as ENTER. When the menu item desired is on the display push
ENTER (TEST) to store the choice in the scale memory.
ENABLING CALIBRATION AND SETUP
1) Remove the Seal Port on the right side of the Porta-Weigh Plus front casting.
2) Push the small button located inside the seal port.

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MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 15
CALIBRATE SETUP MENU
Top Menu Selections
FILTER LOW, MED, HIGH
UNITS kg, lb, Ton, Metric Ton
STD CAL Starts Cal procedure
FINE CAL For minor calibration adjustments
CAL RCAL For emergency calibration only
STANDARD INDUSTRY, NIST, OIML, ALASKA, CANADA, UNITED
KINGDOM, LEGAL-FOR-TRADE, AUSTRALIA
AUTO OFF ENABLED, DISABLED
AZM ENABLED, DISABLE
REMOTE ENABLED, DISABLED
LIGHTING AUTOMATIC, ON, OFF
CONTRAST (eight steps with numerics at “123456” and message reading
“CONTRAST”)
EXIT Push ENTER (TEST) to quit setup
HI SET PT HI VALUE DISABLED, GROSS, NETGROSS
RESPONSE NORMAL, BLANKLCD, BLINKLCD
EXIT
LO SET PT LO VALUE INPUT WT
MODE DISABLED, GROSS, NETGROSS
RESPONSE NORMAL, BLANKLCD, BLINKLCD
EXIT
TOTALIZE MANUAL, AUTO
STANDARD CALIBRATION
Standard Calibration is to be used for normal test weight or cal fixture calibra-
tion of the Porta-Weigh Plus.
1) Enable Calibration by pushing the key behind the seal port.
2) Use the SE ECT (NET/GROSS) key to scroll to the “STD CA ”
message. Push ENTER (TEST).
3) The message reads “Ø SCA E”. Remove all weight from the scale.
When motion ceases push ZERO. Assuming the detected zero weight is

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Page 16 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
within acceptable limits the message reads “WEIGHT” indicating it is
time to add the test weight(s).
4) Pick up a test weight of at least 20% of capacity. (Note: A test weight of
50% or more of capacity is recommended for highest accuracy.)
5) Use the SE ECT (NET/GROSS) key to cause the displayed reading to
match the value of the test weight. When a match is made push ENTER
(TEST). Repeat for the remaining digits. When the last digit is entered
the scale should be steady, as this can affect calibration accuracy.
6) Calibration is complete, push C EAR (ZERO) to return to normal scale
operation, or push SE ECT (NET/GROSS) to choose another Calibrate
Setup function.
FINE CALIBRATION
Fine calibration is for minor adjustments to the calibration and is usually not
necessary.
1) Enable Calibration by pushing the key behind the seal port.
2) Use the SE ECT (NET/GROSS) key to scroll to the “FINE CA ”
message. Push ENTER (TEST).
3) Pick up a test weight of at least 50% of capacity. The weight is indicated
on the numeric digits.
WARNING: This function will not work unless the scale is loaded at 45% of
capacity or more.
4) Use the SE ECT (NET/GROSS) key to cause the displayed reading to
move up slightly. Use the TARE key to cause the reading to move
down. When the displayed reading is acceptable push ENTER (TEST).
5) Fine Calibration is complete. You are now back in the Calibration Setup
Menu. Push C EAR (ZERO) to return to normal scale operation, or push
SE ECT (NET/GROSS) / ENTER (TEST) to choose another Calibrate
Setup function.
CAL WITH RCAL VALUE (CALIBRATE WITH THE RESISTOR CALIBRATION
NUMBER)
Cal Rcal is for emergency calibration when test weights or a calibration system
is not available.
1) Remove the right battery tube (facing the back). On the calibration label
is a printed RCA value. Make a note of the value and reinsert the
battery tube. Turn the scale power on and push the Calibrate enable
switch behind the seal port.
2) Use the SE ECT (NET/GROSS) key to scroll to the “CA RCA ”

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 17
message. Push ENTER (TEST).
3) The message reads “Ø SCA E”. Remove all weight from the scale. Push
ZERO. When motion ceases and assuming the detected zero weight is
within acceptable limits the message reads “ZEROED”.
4) Use the SE ECT (NET/GROSS) and ENTER (TEST) key to cause the
left most digit of the displayed reading to match the RCA value noted
earlier. Repeat for the remaining digits. Push ENTER (TEST).
5) CA RCA is complete, push C EAR (ZERO) to return to normal scale
operation, or push SE ECT (NET/GROSS) to choose another Calibrate
Setup function.
TO ENABLE/DISABLE AZM (AUTO ZERO MAINTENANCE)
1) Enable Calibration by pushing the key behind the seal port.
2) Use the SE ECT (NET/GROSS) key to scroll to the “AZM” message.
Push ENTER (TEST).
3) Use the SE ECT (NET/GROSS) key to scroll through the AZM options.
When the desired mode (ENAB ED, or DISAB ED) is displayed push
ENTER (TEST).
Caution: Disabling Auto Zero Maintenance will degrade temperature and
drift performance of the Porta-Weigh Plus. Disabling it is only intended for
testing at certification.
Seal the Calibration Port. This completes the Calibration Procedure.
TO SET THE LEGAL STANDARD
Caution: Do not change the standard in a egal for Trade system. Changing the
standard will violate the terms of the FT certificate.
1) Enable Calibration by pushing the key behind the seal port.
2) Use the SE ECT (NET/GROSS) key to scroll to the “STANDARD”
message. Push ENTER (TEST).
3) Use the SE ECT (NET/GROSS) key to scroll through the “STAN-
DARD” options. When the desired standard is displayed push ENTER
(TEST).

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Page 18 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
OTHER SETUP FUNCTIONS
FILTER: The filter must be set to “ O” to pass most FT ( egal for Trade)
jurisdictions. In industrial applications, setting the filter to medium or high can
provide a more stable reading.
AUTO OFF: The AUTO OFF feature when enabled prolongs the battery life
of the scale by turning the power off after 1 hour of scale nonuse. Anytime a
key is depressed (any key), or the detected weight is in motion, the 1 hour limit
is reset. Therefore the scale will stay on indefinitely if the weight is changing or
any key is pressed at least once an hour. This feature defaults to the enabled
mode when initially calibrated. When disabled, the scale will stay on and only
the power key will turn it off.
LIGHTING: The light emitting diode ( ED) backlight is normally controlled
by a photocell that detects ambient light and determines if the backlight should
be on or off (AUTOMATIC mode). Should the user desire, the backlight can be
permanently enabled (ON mode) or for increased battery life, permanently
disabled (OFF mode).
REMOTE: Enables or disables the optional IR Remote control. This option
must be installed to function.
SETPOINT: Used to enter low and high setpoint values, mode (disabled,
gross, net/gross) and response (normal, blank display, blink display) of
setpoints. When the weight exceeds a Hi Setpoint value, or falls below a ow
Setpoint value, the scale may respond in a variety of ways. The normal re-
sponse is to turn on an open Drain MOSFET which can be used to drive relays,
lights, sirens etc. (Contact the factory or your MSI distributor for more details).
Other responses include blanking the display (B ANK CD) or flashing the
weight reading on and off (B INK CD). Follow this procedure for entering
Setpoints:

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MSI-4300 Porta-Weigh Plus/5 Key • User Guide Page 19
1) Enable Calibration by pushing the key behind the
seal port.
2) Use the SE ECT (NET/GROSS) key to scroll to
the “HI SETPT” (or “ O SETPT”) message. Push
ENTER (TEST).
3) The message display reads “HI VA UE.” Push
ENTER.
4) The most significant digit flashes. The display reads
“INPUT WT.” Push the SE ECT key until the first
digit of the desired weight value is displayed. Push
ENTER. (The C EAR (ZERO) key can be used to
change an entry if necessary). Note: To enter 100
kgs on a 10,000 kg scale, the first two digits should
be entered as zeros (00100).
5) The next most significant digit flashes. Use the
SE ECT key and the ENTER key to finish out the
entry. Note: With the IR remote, the value can be
entered directly.
6) After the entire Hi Set Point is entered the display
will step to “MODE.” Push ENTER. The first se-
lection is “DISAB ED.” This mode allows the
user to program a setpoint without the setpoint
actually operating. To enable the setpoint, push
SE ECT until either the “GROSS” mode or the
“NETGROSS” mode is selected. In the “GROSS”
mode the setpoint will operate at the value set
based on Gross Weight regardless of any tare value
being subtracted. If this is the desired setpoint op-
eration mode push ENTER. If the setpoint should
operate relative to a tared weight the “NETGROSS”
mode should be used. Use the SE ECT key to
change from “GROSS” to “NETGROSS” and then
push ENTER. In this mode the setpoint will oper-
ate at the value which represents either a Gross
weight or a Net weight.
7) The next selection is the Setpoint “RESPONSE”
— what the scale should do when a setpoint value
is reached. Push ENTER. There are now three se-
lections: The “NORMA ” response turns on the
internal MOSFET which is connected to a user-
supplied alert device such as a siren or strobe light.
Use the SE ECT key to change the response to
INDIVIDUAL DIGIT FLASHES EVERY
TIME SELECT KEY IS PUSHED.

M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Page 20 MSI-4300 Porta-Weigh Plus/5 Key •User Guide
“B ANK CD.” In this mode the liquid crystal
display weight reading blanks out and the message
displays “HI SETPT.” The MOSFET functions as
before. Use the SE ECT key again to change to the
“B INK CD” response. Weight readings continue,
but the display alternates between a standard weight
reading and a “HI SET PT” indication. In all three
modes, the overload condition will override the
display mode.
8) After the desired setpoint response is selected, press
ENTER.
9) The Setpoint Menu is now back on the screen. The
SE ECT key can be used to return to any of the
above operations (VA UE, MODE, RESPONSE)
if modifications need to be made. To quit and re-
turn to normal scale operation use SE ECT until
the message “EXIT?” appears and push ENTER, or
push C EAR (no shift required). This returns you
to the Setup Menu. Again, push C EAR to get out
of the menu and back to standard scale operation.
Use the same procedure for a ow Setpoint.
Disable Set oint:
It is often useful to be able to set up a Setpoint ahead of time and disable it for
testing purposes.
1) From the Setup function, push the SE ECT (NET/
GROSS) key until the message reads “HI SETPT”
(or “ O SETPT”).
2) Push ENTER (TEST). This accepts that the HI
SETPT is to be modified.
3) Push SE ECT until the “MODE” message appears.
Push ENTER.
4) Push the SE ECT key until the message “DIS-
AB E” appears. Push ENTER. This disables the
Setpoint and returns you to the Setpoint Menu.
5) Push C EAR (ZERO) two more times to get out of
the Setpoint and Setup menus, or using the SE-
ECT key, scroll to the next desired operation. To
re-enable the Setpoint, follow steps 1-3 above. On
step 4 select the “GROSS” mode or the
“NETGROSS” mode.