Doran 4200 User manual

4200 Checkweigher
WITH BARGRAPH
4100L Checkweigher
&
Digital Electronic Indicators
INSTRUCTION MANUAL
DORAN SCALES, INC.
1315 PARAMOUNT PKWY
BATAVIA, IL. 60510
1-800-262-6844
FAX: [phone]
http://www.doranscales.com
PN : MAN0003
MANUAL REVISION : 4.3
SOFTWARE REVISION : 4.6
MAN03R43 12/98 TW

Section 1. Unpacking and Installation................................................................ 1
Figure 1 Model 4200 Enclosure Types .................................................... 1
Unpacking ................................................................................................ 2
Installation ................................................................................................ 2
Electrical Connections .............................................................................. 3
Section 2. Quick Setup Guide ........................................................................... 4
Figure 2. 4200 Main Board Connections and Switches ........................... 4
Entering the Setup Mode .......................................................................... 5
Selecting a Capacity and Resolution ........................................................ 5
Analog Calibration .................................................................................... 5
Digital Calibration ..................................................................................... 6
Section 3. Display and Keyboard ...................................................................... 8
Keyboard ................................................................................................. 8
ZERO Push-button ............................................................................ 8
GROSS/NET Push-button ................................................................. 9
CONV Push-button ............................................................................ 9
PRINT Push-button ........................................................................... 9
PROD Push-button ............................................................................ 9
UP/DOWN ARROW Push-buttons .................................................... 9
OVER & UNDER Push-buttons ......................................................... 9
TARE Push-button ............................................................................. 9
Digital Display ........................................................................................... 9
Unit Annunciators ...................................................................................... 9
Status Annunciators .................................................................................. 10
Checkweigh Indicators .............................................................................. 10
Section 4. Scale Operation ................................................................................ 11
Power Up .................................................................................................. 11
Products ................................................................................................... 12
Zero Operation ......................................................................................... 12
Tare Operation .......................................................................................... 13
SET Entry Mode ................................................................................ 13
PTT Entry Mode ................................................................................ 13
Table of Contents
i

DIS Mode ........................................................................................... 14
Over and Under Values ............................................................................. 14
SET Entry Mode ................................................................................ 14
PTT Entry Mode ................................................................................ 15
DIS Mode .......................................................................................... 15
Convert ...................................................................................................... 15
Print Function ............................................................................................ 15
Gross/Net .................................................................................................. 16
Center of Zero ........................................................................................... 16
Motion ........................................................................................................ 16
Setpoints ................................................................................................... 16
SET Entry Mode ................................................................................ 17
PTT Entry Mode ................................................................................ 17
DIS Mode .......................................................................................... 17
STA Mode ......................................................................................... 18
Label Buffer ............................................................................................... 18
Time and Date ........................................................................................... 19
Section 5. Checkweighing ................................................................................ 20
Net and Zero Checkweighing .................................................................... 20
Tolerance Entry and Display Modes ......................................................... 21
4200 Standard (S42, P42, d42) ......................................................... 22
Value Per Bar (Sd, Pd, dd) ................................................................ 23
Scaled (SS, PS, dS) .......................................................................... 24
Modified Value Per Bar (SdA, PdA, ddA) .......................................... 25
Section 6. Parameter Setup ............................................................................. 26
Figure 4. Front Panel Functions - Setup Mode ......................................... 26
Entering the Setup Mode ........................................................................... 27
Viewing and Changing Setup Parameters ................................................. 27
Exiting and Saving the Setup .................................................................... 27
Setup Parameters ..................................................................................... 28
1. Digital Filter ................................................................................... 28
1a. Analog Filter ................................................................................ 29
2. Automatic Zero Tracking .............................................................. 29
Table of Contents
ii

3. Motion Aperture ............................................................................. 30
4. Serial Data Output ......................................................................... 30
5. Start Up Units ................................................................................ 30
5a. Startup Gross/Net ....................................................................... 31
6. Scale Capacity .............................................................................. 31
7. Startup Zero .................................................................................. 33
8. Operating Mode ............................................................................ 34
9. Push-button Enable ....................................................................... 35
9a. Beeper Enable ............................................................................ 35
10. Displayed Resolution ................................................................... 35
10a. Extended Resolution ................................................................. 35
11. Tolerance (Over/Under) Entry Mode ........................................... 36
12. Tare Entry Mode .......................................................................... 37
13. Baud Rate Selection, Port 1 - Printer .......................................... 37
13a. Baud Rate Selection, Port 2 - Duplex ........................................ 37
14. Data bits and Parity, Port 1 - Printer ............................................ 38
14a. Data bits and Parity, Port 2 - Duplex ......................................... 38
15. Print Format ................................................................................. 38
16. Checkweigh Operation ................................................................ 39
17. Convert Operation Select ............................................................ 40
18. Display Operation ........................................................................ 40
19. Handshaking ............................................................................... 40
20. Unit Time On ............................................................................... 41
21. Scale ID ....................................................................................... 42
22. Setpoint Entry Mode .................................................................... 42
23. Setpoint Output Operation .......................................................... 43
24. Time and Date Output Operation ................................................ 44
25. Line Feed and Form Feed ........................................................... 45
Section 7. Calibration ........................................................................................ 46
Entering the Calibration Mode ................................................................... 46
Reading Raw A/D Platform Data ............................................................... 47
Analog Zero Calibration ............................................................................ 47
DIP Switch Settings ............................................................................ 48
Analog Span Calibration ............................................................................ 48
Table of Contents
iii

DIP Switch Settings ............................................................................ 49
Digital Calibration - MOST USED CALIBRATION................................. 49
Exiting the Calibration Mode ..................................................................... 50
Zero and Span Switch Settings for Old Revision Boards .......................... 50
Section 8. Serial Communications ..................................................................... 52
Port 1 - Duplex ......................................................................................... 52
Port 1 (Duplex) Command Summary ....................................................... 53
General Scale Commands ................................................................ 53
Data Request Commands ................................................................. 55
Data Clear Commands ...................................................................... 57
Data Entry Commands ...................................................................... 57
Consecutive Counter Commands ..................................................... 58
Print Buffer ............................................................................................... 59
Label Buffer .............................................................................................. 59
Formatting the Label Buffer ............................................................... 60
Label Buffer Control Codes ............................................................... 60
Port 2 - Simplex ........................................................................................ 62
Data Transmission (Print) Modes ...................................................... 63
Transmit on Demand (TOD) ...................................................... 63
Latch on Demand (LOD) ........................................................... 63
Latch Acceptable Weights (ATD) .............................................. 63
Autoprint 1 (AP1) ....................................................................... 63
Autoprint 2 (AP2) ....................................................................... 63
Autoprint 3 (AP3) ....................................................................... 64
Autoprint 4 (AP4) ....................................................................... 64
Continuous Mode (CNT) ........................................................... 64
Timed Print (TP) ........................................................................ 64
Print Formats ..................................................................................... 65
Configuration and Product Printout .......................................................... 66
Section 9. Model 4100L ..................................................................................... 67
Display and Push-buttons ........................................................................ 68
Scale Operation ........................................................................................ 68
Table of Contents
iv

Checkweighing ......................................................................................... 68
Parameter Setup ...................................................................................... 68
Calibration ................................................................................................ 70
Section 10. Error Codes .................................................................................... 71
Section 11. Troubleshooting .............................................................................. 76
Configuration and Product Printout .......................................................... 77
Resetting Parameters ............................................................................... 77
Resetting Scale ........................................................................................ 77
Returning Scale for Service ...................................................................... 77
Section 12. Connections ................................................................................... 78
Port 1 (Duplex) Hardware Configuration .................................................. 78
Port 2 (Printer) Hardware Configuration ................................................... 78
Serial Data Connections - Port 1 (Duplex) ............................................... 78
Serial Data Connections - Port 2 (Printer) ............................................... 78
RS232 Null Modem Cable with DB9 Connector ....................................... 79
RS232 Null Modem Cable with DB25 Connector ..................................... 79
Remote Zero Switch ................................................................................. 80
Load Cell Connections ............................................................................. 80
Power Supply Connections ...................................................................... 80
Miscellaneous Connectors, Switches and ICs ......................................... 81
Figure 6. Main Board Connections and Components .............................. 81
Section 13. Technical Specs and Options ......................................................... 82
Options ...................................................................................................... 82
Technical Specifications ............................................................................ 84
Table of Contents
v

INTRODUCTION
Congratulations! You have chosen the most technologically advanced, highest quality
stainless steel checkweighing scale available today. The Doran Scales Model 4200
incorporates state-of-the-art CMOS microprocessor technology, full front panel
programmability, and an environmentally sealed load cell to provide you, the user, with the
ultimate in scale power, flexibility and reliability. This combination of the 4200's leading
edge electronics with its rugged, stainless steel, gasketed construction and high quality,
water resistant double-capacity load cell is designed to provide the highest degree of
accuracy while maintaining the durability necessary to hold up to hostile industrial
environments.
Major features of the 4200 that set it apart from other scales are:
• Fully front panel programmable
• Environmentally protected load cell
• 304 stainless steel construction
• Automatic push-button calibration
• Digital tare & over/under tolerance setability
• Push-button ZERO, GROSS/NET, TARE, UNITS and PRINT
• 20 Product memory for Tare, Over & Under (200 products optional)
• Bright, easy to read LED display
• Read weight in LB, KG, OZ, G, LB & OZ
• OVER-ACCEPT-UNDER Checkweigh Bargraph Indicator
• 1 Bi-directional Serial Data Port (Selectable baud rate, parity)
• 1 Serial Data Printer Port (Selectable baud rate, parity)
• Selectable print formats - includes a fully configurable print buffer
• User programmable features include:
-Analog Filter
-Digital Filter (display update rate/averaging)
-Zero tracking
-Push-button enable
-Keyboard activation annunciator
-Motion aperture
-Legal For Trade operation
-Data output modes
-Capacity and resolution
• Options:
-100 Product Memory (includes Time and Date and Setpoint Outputs)
-RS485, 20ma serial communications hardware configurations
Please be sure to read this entire manual to assure yourself of getting all the benefits of
these and other advanced features of the Doran Scales Model 4200. This scale is backed
by a full 2 year factory warranty. Please contact Sales Department for sales for ordering
inquiries.
vi

Section 1. Unpacking and Installation
Your Doran Model 4200 or 4100L is ready to unpack, install and put into use. These
models (if ordered with a platform) have been carefully calibrated and packed at our
factory. If you observe any shipping damage to the carton, immediately notify your shipper
- Doran insures all shipments, but all damage claims must be made directly to the shipper.
There are 3 different 4200 types that can be ordered. The internal electronics and the front
panels are all the same, but accessing the main board for setup and calibration is different
for the 3 types. Whenever a procedure depends upon the enclosure type in this manual,
the type is specified in the instructions. The 3 enclosures are pictured below.
In addition to the 4200 models, this manual covers the Model 4100L, which is a "Legal for
Trade" version of the Model 4100 Checkweigher. The 4100L is identical to the 4200
electronically, but is different in the display and front panel. See Section 9 for information
on the 4100L.
4200 Tower 4200M 4200RSS
Figure 1. Model 4200 Enclosure Types
1
UNDER ACCEPT OVER
ZERO
OVER
UNDER
TARE GROSS
NET
PROD PRINT UNITS
CLASS III
CAP.
4200
DORAN DIGIBAR
UNDER ACCEPT OVER
ZERO
OVER
UNDER
TARE GROSS
NET
PROD PRINT UNITS
CLASS III
CAP.
4200DORAN DIGIBAR
UNDER ACCEPT OVER
ZERO
OVER
UNDER
TARE GROSS
NET
PROD PRINT UNITS
CLASS III
CAP.
4200DORAN DIGIBAR

UNPACKING
Before proceeding to unpack your Model 4200, please note that although it is a highly
durable industrial scale indicator, it is also a sensitive weighing instrument. Normal care
should be taken when handling and using the indicator. Improper handling or abuse could
be damaging and result in costly repairs that may not be covered by the warranty. Please
observe the following precautions to insure years of trouble-free service from your Model
4200.
* DO NOT drop the scale indicator or platform.
* DO NOT immerse the scale indicator or platform.
* DO NOT drop objects on the platform.
* DO NOT pick up the scale platform by the "spider".
Carefully remove the Model 4200 from the shipping carton. Be sure to retain the shipping
carton and all packaging material in case reshipment is required.
INSTALLATION
4200 Tower: Models with 10" x 10", 12" x 12", and 12" x 16" platforms are shipped in
one piece (fully assembled). When unpacking models with 18" x 18", 18" x
24", and 24" x 24" platforms, note that the scale is shipped with the indicator
column detached from the weighing platform. To attach the indicator column
to the platform, first locate a suitable area at the edge of a table or bench that
is taller than the indicator column assembly. Lift the indicator off the platform
and set it aside. Note that the indicator and platform are connected by a 5'
cable; be careful not to pull on this cable.
Remove the platter from the weighing platform and set it aside. Invert the
platform and set it such that the side holding the four indicator column
mounting bolts is at the edge of the table. Remove the four mounting bolts
from the bottom of the mounting holes. Reinstall and tighten the four
mounting bolts. The indicator column mounts to the support plate with 4
1/4"-20 x 1/2" hex head screws. Lift the indicator column and point it down
towards the floor with the display facing the platform. Align the 4 mounting
holes in the base of the column with the corresponding 4 holes in the support
plate. Install and tighten the 4 hex head screws.
Section 1 Unpacking and Installation
2

Place the scale in the desired position. Level the platform by adjusting the
four corner feet until the bubble in the bubble level, located beneath the top
platter of the platform is within the center circle. After a level condition is
achieved, test for a stable condition by trying to rock the platform backward
and forward and side to side. Adjust the feet beneath the indicator column
for final levelness and stability.
4200RSS: The indicator box must be mounted to a vertical surface using the mounting
flanges on the top and bottom of the case. Access to the internal wiring is
accomplished by loosening the front cover latch screws and swinging the
front cover open.
4200M: Locate the desired position for the scale indicator. If the indicator is to be
permanently mounted to a wall, shelf, or counter, remove the mounting
bracket from the indicator. Use the two holes provided in the bracket to affix
it to the desired surface. Before mounting the indicator into the bracket,
connect the scale platform and any data or communications cables to the
indicator. Insert one of the threaded studs into one of the mounting holes on
the bracket. Now gently spread the sides of the bracket apart and insert the
other stud into the hole on the opposite side. Loosely thread the two knobs
back onto the studs. Adjust the indicator to the desired viewing angle and
tighten down the knobs.
When choosing a location for the weighing platform, keep in mind that it should be on a
sturdy surface that is free from vibration and air currents. Vibration from heavy equipment
or appliances and air currents from fans, heating ducts, etc. can cause bounce on the scale
display. Using the Model 4200's Digital Averaging feature to minimize these effects is
outlined in Section 6 of this manual.
ELECTRICAL CONNECTIONS
The Model 4200 requires 120 VAC, 50/60 Hz power (240 VAC or DC power optional). Be
sure the AC power is not excessively noisy - this can occur if large inductive loads, such as
solenoids or motors, are on the same power line. The Model 4200 has a filtered power
supply to reduce the effects of normal line noise, but it cannot limit severe fluctuations. If
problems occur, noise producing devices may have to be suppressed to minimize their
effect.
Note - the AC power main disconnect is the power plug. To remove power from the scale,
simply pull the power plug.
Section 1 Unpacking and Installation
3

Section 2. Quick Setup Guide
In most cases, your Model 4200 will be completely configured and calibrated at the factory.
If the indicator is ordered without a Doran platform, the indicator will need to be set up
using the following guide. If you have any questions about setting up or calibrating the
indicator, refer to the more complete sections in this manual for more information.
Figure 2. 4200 Main Board Connections and Switches
(components are pictured larger than normal)
There are two communication ports on the Model 4200, a bi-directional (duplex) serial port
and an output-only serial printer port. Both ports are default configured as RS232 and the
default connections are shown in figure 2. Other configurations are available and can be
ordered as required or configured as stated in Section 12.
4
TB2
10 9 8 7 6 5 4 3 2 1
TXD Dup CTS TXD Prt RXD Dup Ground
1 2 3 4 5 6 7 8
Ground + Signal - Signal + Excitation - Excitation + Sense - Sense Ground
1 2 3 4 5 6 7 81 2 3 4 5 6 7 8
9 8 7 6 5 4 3 2 1
TB1ZERO POT
S2
OPEN - OFF - 0 CLOSED - ON -1
Shield
Prt = Printer Port
Dup = Duplex Port TXD = Transmit RXD = Receive S2>CALOPERATE<

ENTERING THE SETUP MODE
To enter the Setup Mode, it is necessary to gain access to the main board. This is done
differently with the different 4200 models (see figure 1). Note: indicator must be
powered-up, before switching S2 - position 9 or S1 to the Setup Mode.
Model 4200 Tower: Remove the small rectangular access panel on the rear of the tower
by removing the two hex screws holding it in place. Flip S1 located on
the PCB just inside the access port (red-handled toggle switch)
to enter the setup mode.
Model 4200M: Remove the rectangular access panel on the rear of the indicator by
removing the six hex head screws holding it in place. Locate S2 -
position 9 using figure 2. Move this switch to the closed position to
enter the setup menu.
Model 4200RSS: Loosen the front cover latches and open the front cover. Locate S1
on the main board using figure 2. Flip S1 to enter the setup mode.
When the switch has been closed, the scale display will respond by showing the message
"AUG --". You are now ready to begin programming the 4200.
SELECTING A CAPACITY AND RESOLUTION
After entering the setup mode as explained above, use the DOWN arrow button to advance
to the CAP parameter. Use the UP arrow button to advance to the desired capacity. Use
the DOWN arrow again to advance to the CtS parameter, and use the UP arrow to choose
3000 or 6000 divisions of displayed resolution (press the PRINT button to choose 10000
divisions).
ANALOG CALIBRATION
A. If not already in the setup mode, do so now using the procedure outlined above.
B. Press GROSS/NET to enter the calibration mode.
C. Remove all weight from the platform.
D. Press and hold the PRINT button to display the internal or raw counts - this is the
RAWLO value. The reading should be between 1000 and 10,000 counts.
E. Place a test weight on the platform.
Section 2 Quick Setup Guide
5

F. Press and hold the PRINT button to display the internal counts - this is the RAWHI
value. Use the following formula to calculate the SPAN and full capacity output
(RAWFC). Note: when the Print button is pressed, the SPAN value will be
transmitted to printer port.
SPAN
=
(
RAWHI
−
RAWLO
)
∗
C
A
P
A
C
I
T
Y
T
E
S
T
W
E
I
G
H
T
RAWFC
=
RAWLO
+
SPAN
(CAPACITY is the capacity of the indicator, TESTWEIGHT is the test weight used)
Note: if a test weight equal to the capacity of the scale is used, then RAWFC is the
same as RAWHI, and SPAN = RAWHI - RAWLO.
RAWFC must be less than 100,000 counts, and SPAN should be at least 40,000
counts.
Typical analog calibration values:
RAWLO: 3,000 to 5,000 counts
RAWHI: 58,000 to 67,000 counts
SPAN: 53,000 to 64,000 counts
If the zero and/or full scale readings are not within these limits, refer to Section 6 for
instructions on how to set the analog calibration.
G. Proceed to DIGITAL CALIBRATION.
DIGITAL CALIBRATION
The Model 4200 must be calibrated with a test weight equal to at least 20% of the scale
capacity (5% for capacities over 1000 lb). The greater the test weight, the better the
calibration will be throughout the entire active range of the platform or load cell assembly
(calibrating at capacity is ideal). Follow these steps to perform the digital calibration:
A. If not already in the setup mode, do so now using the procedure outlined above.
B. If not in the calibration mode, press GROSS/NET to enter the calibration mode.
C. Remove all weight from the scale platform.
D. Press the ZERO button - the display will show "Ent 0" to signify that the zero
point has been successfully calibrated.
Section 2 Quick Setup Guide
6

E. Place the test weight on the platform. Adjust the displayed weight to match the
test weight using the UP or DOWN arrows.
F. When the displayed weight is correct, press the UNITS button to save the calibration
- the display will show "Ent SP" to signify that the span has been successfully
calibrated.
G. Open SW1 (SW2 #9 for M model) to exit the setup mode and return to normal
operation. Reassemble the indicator.
See Section 6 for more information on the setup mode, see Section 7 for a more detailed
description of the digital calibration procedure.
If an error message was encountered at any time during the calibration, the calibration was
not successful. See section 11 for a list of error codes and their meaning.
Section 2 Quick Setup Guide
7

Section 3. Display and Keyboard
The front panel of the 4200 contains the digital weight display, the checkweigh bargraph
display, the status annunciators, and the push-buttons necessary for controlling the various
functions of the indicator. In addition, the capacity label is displayed through a window on
the front panel. Figure 3 Front Panel
KEYBOARD
The 4200 keyboard consists of 10 push-buttons that control the indicator functions. These
are explained briefly below.
ZERO Zeroes the weight display when pressed. The range of the zero function is
menu-programmable for full range, +/- 4.0 % or +/- 1.9 % of scale capacity.
The ZERO button is only active in the gross mode. Current parameter
settings can be displayed by pressing ZERO button during power-up.
NOTE: The following push-buttons may be active or inactive depending upon the
user menu settings.
8
UNDER ACCEPT OVER
ZERO
OVER
UNDER
TARE GROSS
NET
PROD PRINT UNITS
CLASS III
CAP.
4200
DORAN DIGIBAR

GROSS/ Switches between the gross and net weight modes. The GROSS and NET
NET annunciators indicate which mode the scale is currently in. The
TARE push-button is active in either mode, but the ZERO push-button is
available only in the gross mode.
CONV Each time this push-button is pressed, the digital weight display changes
from lb to kg (g) to oz to lb & oz. The user may select 4, 3 or 2 way convert
via the menu.
PRINT Initiates a manual serial data transmission each time pressed. Or selects
current label buffer number when depressed for more than 2 seconds.
PROD Used to recall or change the current product number.
UP/DOWN Used to increase or decrease the tolerance, tare or product number
ARROWS settings, or to select parameters in the setup mode. Note: When both
UP/DOWN arrows are pressed at the same time, scale will reset.
OVER & Used to recall or change the over or under checkweigh tolerance value.
UNDER In any mode of operation, these push-buttons can be pressed to recall the
current setting being used by the 4200.
TARE Used to set or recall a tare weight values. The ACCEPT indicator flashes
when a tare weight is displayed. Only positive values may be entered for a
tare. If an attempt is made to enter a negative tare, an error message "Er t-"
or "Er tAr" will be displayed as a warning. The TARE button operation
depends upon the Tare Entry Mode selected in the parameter setup.
DIGITAL DISPLAY
The 6 digit weight display is a bright easy-to-read, red LED display. It shows the actual
weight on the scale in the weighing mode, recalled or new values for over, under or tare
values, and error messages as required. The display is also used to display calibration
and setup information (parameters and options).
UNIT ANNUNCIATORS
The Model 4200 supports the display of lb, kg, oz, g and lb-oz. When the indicator is in the
lb, kg, or oz display modes, their respective annunciators will be enabled. When the
indicator is in the lb-oz display mode, both the "lb" and "oz" annunciators will be enabled. If
the indicator is set up to start up in the g display mode, then the display will show gram
weight, and the "kg" annunciator will be enabled.
Section 3 Display and Keyboard
9

STATUS ANNUNCIATORS
The Model 4200 provides 5 additional status annunciators during normal weighing
operations.
"MOT" Indicates that the indicator is in the motion state. This means that there is
movement on the platform. The movement must settle before a stable state
is achieved and is indicated when the "MOT" annunciator is disabled. Any
function that is related to stability (i.e. a print request, autoprint, etc.) will be
initiated upon stability and the display of stability.
"ZERO" Indicates when the displayed weight value is within +/- 0.25 scale divisions of
zero. When outside of the band, the annunciator will be disabled.
"NET" Indicates that the indicator is in the net display mode of operation.
"GROSS" Indicates that the indicator is in the gross display mode of operation.
"NEG" Indicates a negative weight when the indicator is in the lb-oz display mode.
CHECKWEIGH INDICATORS
UNDER Indicates that the weight on the scale is below the acceptable weight
tolerance.
ACCEPT Weight is within acceptable weight tolerance.
OVER Weight is over acceptable weight tolerance.
Section 3 Display and Keyboard
10

Section 4. Scale Operation
The Doran 4200 is a powerful and versatile weighing instrument. It provides the user with
the capability of easily changing the scale parameters of the 4200 to fit each application.
The 4200 is preset at the factory to the most commonly used settings. Refer to Section 6
Parameter Setup for information about these settings and how to change them. You can
use the 4200 "as is" to become familiar with its operation, and then customize it to your
particular needs as required.
The Model 4200 is primarily a checkweigher, but can be used for normal weighing and a
number of other functions. The bargraph checkweigh display can be configured to meet a
variety of needs. The 4200 comes standard with the capability of storing tares and over
and under values for 20 products. This capability can be expanded to 200 products with
option 42 OPT 27. The 4200 also comes standard with serial output capability for printing,
as well as serial bi-directional capability for communicating with a computer or terminal
(the bi-directional port can be used to control most of the functions of the indicator).
Keep in mind that the 4200 can be operated very simply by using only the ZERO button,
just like our tried and proven Model 4100 Checkweigh Scale. Or, you can utilize more of
the 4200's power by using its other features as you require.
POWER UP
To turn on the 4200, simply plug it into a proper wall receptacle. The power plug is the
main power disconnect, the only way to remove power from the scale is to pull the power
plug. Do not plug a 120VAC model into a 240VAC receptacle as this will cause certain
damage. Upon power-up, the display will show the current software number, and then the
current revision level (rev x.x) for several seconds. Next, a display test sequence turns on
the 8 annunciators, Over, Accept, and Under indicators, and each numeric display digit
one-by-one.
After the display test, the 4200 performs an auto-zero function, bringing the weight display
to zero. Anything on the scale will be zeroed out, so be sure that the platter is empty upon
power-up to avoid possible errors. If "auto-zero upon power-up" is not selected in the
parameter setup menu, the 4200 will display the actual gross weight on the scale using
either the calibrated zero point or the last push-button zero point as the zero reference
point, depending on which parameter is selected in the setup mode. This is useful for
batching or filling applications so that a fill cycle can be resumed after a power failure
without auto-zeroing the scale.
11

PRODUCTS
The 4200 has the ability to store information for 20 products (200 products if option 42
OPT 27 is installed). There is a separate tare, over, and under value associated with each
product. These values are saved in nonvolatile memory so that they are not lost if power is
removed. When a product is selected via the PROD button and the UP and DOWN
arrows, the tare, over, and under values associated with that product will become active.
This means that any tare operations or checkweighing operations will use the values for
that product. The values for the tare, over, and under values for each product must of
course be entered before performing any tare or checkweighing operations. These values
can be entered in a number of ways - see the explanations for these operations elsewhere
in this section.
To select a product to either use that product's values or to enter new values, first
momentarily press the PROD button. The indicator will display "Prd XX", where XX is the
number of the currently active product. Press the UP or DOWN arrow buttons to change to
a different product number. To activate the new product, press PROD again, and the
indicator will return to normal weighing. All tare and checkweighing operations will now use
the values entered for the product just selected.
ZERO OPERATION
The ZERO push-button is only active in the gross weight mode. When pressed, ZERO
causes the display to read zero; it operates on positive or negative weights.
There are 3 operating modes, "OP" for the ZERO function that are menu selectable:
Std Standard mode which allows full range ZERO operation.
44 Handbook 44 mode which allows only +/- 1.9 % of scale capacity to be zeroed. CAn
Canada Weights and Measures mode which allows only +/- 4% of scale capacity to be
zeroed.
As an example, for a 30 lb. capacity scale, you can zero up to the full 30.00 lb. when in the
"Std" mode, up to +/- 0.57 lb. (+/- 1.9 % of 30 lb.) in the "44" mode, and up to
+/- 1.20 lb. (+/- 4.0% of 30 lb.) in the "CAn" mode.
Please note that the startup zero reference point is set upon scale power-up. If any weight
is left on the scale upon power-up (or power failure restart) it will be auto-zeroed, setting
that weight as the overall gross zero reference point. If you are in the "44" or "CAn" mode,
you will not be able to zero any weight greater than +/- 1.9 % or +/- 4.0 % of capacity,
based on the gross zero previously set. To avoid potential problems, just be sure that the
scale is empty when power-up occurs. This sets the start up zero reference point to the
proper value.
Section 4 Scale Operation
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