Rinstrum 400 Series User manual

400
S
e
r
i
es
(K481)
SummingIndicator
ReferenceManual
RI00-617-100

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004R-623-120 Page 1
Table of Contents
1. INTRODUCTION ......................................................................................................................5
1.1. Overview .......................................................................................................................5
1.2. The Manuals Set ...........................................................................................................6
1.3. Document Conventions.................................................................................................6
2. SPECIFICATIONS....................................................................................................................7
3. INSTALLATION .......................................................................................................................9
3.1. Introduction ...................................................................................................................9
3.2. General Warnings .........................................................................................................9
3.3. Electrical Safety ............................................................................................................9
3.4. Cleaning........................................................................................................................9
3.5. Panel Mount Template ..................................................................................................9
3.6. Cable Connections......................................................................................................10
3.7. DC Power (DC PWR + , DC PWR –) ..........................................................................10
3.8. Summing Slave Serial Connection..............................................................................10
3.9. Load Cell Connection..................................................................................................11
3.10. Auxiliary Connections..................................................................................................11
3.10.1. RS-232 Serial..............................................................................................12
3.10.2. RS-485 Serial..............................................................................................12
3.11. Optical Communications .............................................................................................13
3.12. Connecting Shields .....................................................................................................14
3.12.1. Cable Shield Connection and Earthing.......................................................15
3.13. Regulatory Sealing Requirements ..............................................................................15
3.14. Accessory Module connection ....................................................................................15
4. SETUP MENUS......................................................................................................................17
4.1. Accessing Setup Menus..............................................................................................17
4.1.1. Setup Display Prompts ...............................................................................18
4.2. Exiting Full or Safe Setup............................................................................................18
4.3. Menu Navigation .........................................................................................................18
4.4. Changing Data ............................................................................................................19
4.5. Numeric Entry .............................................................................................................19
4.6. Selections and Options ...............................................................................................20
4.7. Strings.........................................................................................................................20
4.7.1. Normal String Editing ..................................................................................20
4.7.2. Literal String Editing....................................................................................21
4.7.3. ASCII String Editing ....................................................................................21
5. BASIC OPERATION ..............................................................................................................22
5.1. User Interface Display and Controls ...........................................................................22
5.1.1. Overview .....................................................................................................22
5.1.2. Display ........................................................................................................23
5.1.3. Primary Annunciators..................................................................................23
5.1.4. Keypad........................................................................................................24
5.2. Operation Keys ...........................................................................................................25
5.2.1. Power Key...................................................................................................25
5.2.2. Zero Key .....................................................................................................26
5.2.3. Tare Key .....................................................................................................26
5.2.4. Gross/Net Key.............................................................................................27
5.2.5. Function Keys .............................................................................................27
5.2.6. Up, Down, OK keys: Products ....................................................................28
5.2.7. Clock...........................................................................................................30
5.2.8. View ............................................................................................................31
5.2.9. Report .........................................................................................................31
5.2.10. Total............................................................................................................32
5.2.11. User ID........................................................................................................32
5.2.12. Target..........................................................................................................33
5.2.13. Lock ............................................................................................................33
5.2.14. Alibi .............................................................................................................34
5.2.15. Acc..............................................................................................................34
5.2.16. Stability Considerations ..............................................................................34

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6. CONFIGURATION .................................................................................................................35
6.1. General Setup Information ..........................................................................................35
6.2. Calibration Counter .....................................................................................................35
6.3. Passcodes...................................................................................................................35
6.3.1. Full Setup Passcode...................................................................................35
6.3.2. Safe Setup Passcode .................................................................................35
6.3.3. Operator Passcode .....................................................................................36
6.3.4. Setup Lock-Out...........................................................................................36
7. SUMMING SETUP .................................................................................................................37
7.1. Wiring Diagram ...........................................................................................................37
7.2. Configuring the Slave R300 or R400 Indicators..........................................................37
7.2.1. Slave Calibration.........................................................................................37
7.2.2. R320 Slave Configuration ...........................................................................37
7.2.3. R420 Slave Configuration ...........................................................................37
7.3. Basic Configuration of the K481 Summing Indicator...................................................38
7.4. Slave Name Configuration of the K481 Summing Indicator........................................38
7.5. Subtotal Configuration of the K481 Summing Indicator ..............................................38
8. SETUP MENUS......................................................................................................................39
8.1. GEN.OPT (General options) .......................................................................................39
8.1.1. LANG (Operator language).........................................................................39
8.1.2. DATE.F (Date format) .................................................................................39
8.1.3. PCODE (Security passcodes).....................................................................39
8.1.4. KEY.LOC (Key Function Access Control)...................................................40
8.1.5. DISP (Display options)................................................................................40
8.1.6. USR.STR (User Defined Strings)................................................................41
8.1.7. POWER (Power options) ............................................................................41
8.1.8. USR.DEF (Set all non-calibration settings to defaults) ...............................41
8.2. H.WARE (Hardware Configuration & Test) .................................................................42
8.2.1. ALLOC (Allocation Report) .........................................................................42
8.2.2. SER1.HW, SER2.HW .................................................................................43
8.2.3. IO.HW .........................................................................................................44
8.2.4. ANL.HW ......................................................................................................44
8.2.5. ETH.HW......................................................................................................45
8.2.6. ETH.DEF (Set the M4221 Ethernet module to defaults).............................45
8.2.7. DSD.HW .....................................................................................................46
8.3. SCALE (scale setup options) ......................................................................................46
8.3.1. OPTION (Scale options) .............................................................................46
8.4. SER.SUM (Serial summing configuration) ..................................................................47
8.4.1. SERIAL (Summing serial port)....................................................................47
8.4.2. PROTO (Summing serial protocol) .............................................................47
8.4.3. SLAVES (Number of slaves to sum)...........................................................47
8.4.4. NAME (Naming for individual slaves) .........................................................47
8.4.5. SUB.NUM (Number of subtotals)................................................................48
8.4.6. S.TOT.x (Subtotal settings).........................................................................48
8.5. FUNC (Special functions)............................................................................................48
8.5.1. NUM (Number of special functions) ............................................................48
8.5.2. SFn: TYPE (Function Types) ......................................................................49
8.5.3. SFn: KEY (Function Key / Remote Input ) ..................................................49
8.5.4. SFn: PRINT (Printing Functions) ................................................................50
8.5.5. SFn: SINGLE (Single Serial Output Functions) ..........................................51
8.5.6. SFn: BLANK (Blanking Functions)..............................................................51
8.5.7. SFn: PRD.SEL (Product Select) .................................................................51
8.5.8. SFn: THUMB (Thumbwheel Product Selection) .........................................52
8.5.9. SFn: REM.KEY (Remote Key Functions) ...................................................52
8.5.10. SFn: REPORT (Report Printing Functions) ................................................52
8.5.11. SFn: SC.EXIT (Scale Exit) ..........................................................................53
8.5.12. SFn: SLAVE (Display slave and subtotal weights) .....................................53
8.6. SER.NET (Network communications) .........................................................................54
8.7. SER.AUT (Automatic transmit) ...................................................................................55
8.7.1. NUM (Number of Automatic Transmissions) ..............................................55
8.7.2. AUTO.n (Automatic Output Configuration) .................................................55

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8.8. PRINT (Printouts)........................................................................................................56
8.8.1. NUM (Number of printouts).........................................................................56
8.8.2. HEADER (Print header) ..............................................................................56
8.8.3. FOOTER (Print footer) ................................................................................56
8.8.4. PAGE (Print page options...........................................................................56
8.8.5. SPACE (Print blank space options) ............................................................57
8.8.6. PRINT.n … (Printout options) .....................................................................58
8.9. SETP (Setpoints) ........................................................................................................59
8.9.1. NUM (Number of setpoints) ........................................................................59
8.9.2. SETP1 … SETP8 (Setpoint options) ..........................................................59
8.10. ANL.OUT (Analogue Output) ......................................................................................61
8.11. End (Save and exit).....................................................................................................61
9. NETWORK COMMUNICATIONS...........................................................................................62
9.1. Introduction .................................................................................................................62
9.2. Network Protocol.........................................................................................................62
9.2.1. Basic Message Format ...............................................................................62
9.2.2. Termination.................................................................................................63
9.2.3. Error Handling.............................................................................................64
9.2.4. Ring Network Enhancement .......................................................................64
9.2.5. Examples ....................................................................................................65
10. AUTOMATIC WEIGHT OUTPUT ...........................................................................................67
10.1. Overview .....................................................................................................................67
10.2. Auto Weight Format String..........................................................................................67
11. PRINTING...............................................................................................................................68
11.1. Overview .....................................................................................................................68
11.2. Print ID ........................................................................................................................68
11.3. Record printouts..........................................................................................................68
11.4. Docket printouts ..........................................................................................................68
11.5. Report printouts...........................................................................................................69
12. SPECIAL FUNCTIONS ..........................................................................................................70
12.1. Introduction .................................................................................................................70
12.2. Key Functions .............................................................................................................70
12.2.1. NONE..........................................................................................................70
12.2.2. PRINT .........................................................................................................70
12.2.3. SINGLE.......................................................................................................71
12.2.4. TEST...........................................................................................................71
12.2.5. PRD.SEL.....................................................................................................72
12.2.6. SLAVE ........................................................................................................73
12.2.7. SC.EXIT ......................................................................................................73
13. SETPOINTS ...........................................................................................................................74
13.1. Overview .....................................................................................................................74
13.2. Outputs........................................................................................................................74
13.3. Common Settings........................................................................................................74
13.4. Weigh in (OVER) Setpoints and Weigh Out (UNDER) Setpoints ...............................75
13.4.1. Additional Settings ......................................................................................75
13.5. Status Based Setpoint Types......................................................................................76
13.6. Logic Setpoint Types...................................................................................................76
13.7. Scale Entry/Exit Setpoint Types..................................................................................76
14. ANALOGUE OUTPUT ...........................................................................................................77
14.1. Overview .....................................................................................................................77
14.2. Configuration of Hardware ..........................................................................................77
14.2.1. Configuration...............................................................................................77
14.2.2. Calibration...................................................................................................77
14.2.3. Testing ........................................................................................................77
14.3. Analogue Weight Transmission ..................................................................................77
15. APPENDIX 1: DIMENSIONS .................................................................................................78
15.1. Dimensions .................................................................................................................78
15.2. Legal Sealing Details ..................................................................................................79
15.2.1. Trade Label.................................................................................................79
15.2.2. Lead Seals..................................................................................................80

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15.2.3. Destructible Sticker Seals...........................................................................81
15.2.4. Electronic Seal............................................................................................81
16. APPENDIX 2: PRINT AND AUTOMATIC TRANSMISSION TOKENS..................................82
16.1. ASCII codes ................................................................................................................82
16.2. Tokens ........................................................................................................................83
16.2.1. Non-paged generic tokens..........................................................................83
16.2.2. Page tokens ................................................................................................83
16.2.3. Page 0, 1, 2, 3, 7 tokens: Weight Information............................................84
16.2.4. Page 4, 5, 6 tokens: Product Information....................................................85
16.2.5. Page 8 tokens: Miscellaneous weight data.................................................85
16.2.6. Format tokens.............................................................................................86
16.2.7. Page 9 Tokens: Summing Information........................................................87
17. APPENDIX 3: COMMUNICATIONS REGISTERS.................................................................88
18. APPENDIX 4: SETUP MENU QUICK REFERENCE .............................................................93
19. APPENDIX 5: ERROR MESSAGES ......................................................................................95
19.1. Overview .....................................................................................................................95
19.2. Weighing Errors ..........................................................................................................95
19.3. Setup Errors ................................................................................................................96
19.4. Diagnostic Errors.........................................................................................................96
20. GLOSSARY............................................................................................................................98
20.1. Glossary of Terms.......................................................................................................98
20.2. List of Figures..............................................................................................................99
20.3. List of Tables...............................................................................................................99
21. INDEX...................................................................................................................................100

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1. Introduction
1.1. Overview
This precision digital summing indicator can sum up to nine slave indicators from
either the R300 or R400 range. These can be connected together on a multi-drop
serial RS485 bus or RS232 ring network. The summing indicator polls each of the
slave units summing all of the weight readings, and displays the resulting total
weight. The setpointing, printing facilities and accessory modules are all driven from
the total weight. The summing indicator will show an error message (------) if any of
the slave weights are negative or if there is a mix of gross and net weights, as
defined by Technical Schedule S1/0/A. If all slave units are showing net weight the
summing indicator will show a net total. Facilities are provided to view and use
individual slave weights, and sub totals of a subset of the slave weights.
The setup of the instrument is digital, with a non-volatile security store for all setup
parameters. It may be operated from either a DC power source (12VDC to 24VDC)
or AC power (optional 110 – 240 VAC). There is a soft power on/off function that
retains memory of its state. Once an instrument is turned on it will automatically start
up again if the external power is interrupted.
Optical communications are fitted standard and allows for a temporary isolated
communications link to be established with a PC. Software upgrades and the use of
computerised setup can then be done using a PC. Refer to Optical Communications
on page 13 for more information.
Figure 1: Weight Indicator
The instrument provides zero, tare and gross/net on the fixed function keys and
supports special functions (eg. Toggle slave weights and blanking), via three (3)
user definable function keys and external inputs. Operator functions (clock, view,
report etc) and editing functions are provided on the alpha/numeric key pad. It is
equipped with an NVRAM store to ensure day-to-day operating settings (eg.
CLOCK) are retained when power is removed.
The RS-232 communications port is typically used for communicating with the slave
indicators. It can also be used for printer driving, connection to a remote display or
PC when an optional serial module is used for the slave communications. The

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transmit-only RS-485 communications port can be used for remote displays. There
is a built-in clock for date-stamping printed outputs.
The instrument can support different software applications depending on the
functionality required. This manual covers the K481 summing indicator. Please refer
to the relevant manual for the slave indicators.
1.2. The Manuals Set
This manual is part of a set of manuals covering the setup and operation of the
instrument. The set includes the following:
•Reference Manual - Contains detailed information on calibration and setup. This
manual is intended for use by Scale Technicians who are installing the instrument.
•Operator Manual - Aimed at the operator of the instrument, and covers the day-to-
day operation of the instrument.
•Quick Start Manual - Intended for Scale Technicians who are familiar with the
instrument and simply need a quick reference to menu options and connection
diagrams, etc.
1.3. Document Conventions
The following document conventions (typographical) are used throughout this
Reference Manual.
Bold Text Bold text denotes words and phrases to note.
<Key> <Key> denotes a Keypad key.
Note: In the Specifications section the < symbol means less than
and the > symbol means greater than.
^ This symbol denotes one space when describing serial output
formats.
⊗Items marked with ⊗indicate that the setting is available only in Full
Setup and is trade critical. When trade critical settings are changed
the calibration counter is incremented.
Table 1: Document Conventions

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2. Specifications
Performance
Operating
Environment
Temperature: –10 to +50°C ambient
Humidity: <90% non-condensing
Storage: –20 to +50°C ambient
IP55 when panel mounted or with rear boot (otherwise IP40)
Case Materials ABS, Silicon Rubber, Nylon, Acrylic (no halogen used)
Packing Weights Basic Indicator: 0.6kg
Digital
Display LCD with 4 alpha-numeric displays and LED backlighting:
•Primary display: 6 x 28.4mm high digits with units and
annunciators
•2
nd display: 9 x 17.6 mm digits with units
•3
rd display: 8 x 6. 1mm digits
•4
th display: 4 x 7.6 mm digits
Setup Full digital with visual prompting in plain messages
Power Input
Standard Power 12 to 24VDC (15 VA max) - ON/OFF key with memory feature
AC
M4101
Input: 110/240VAC 50/60Hz
Output: 12VDC 15VA
Variants
Battery
M4102
Rechargeable NiMH battery, 12V, 2.5Ah
Features
Optical Data
Communications
Magnetically attached optical communications support. Optional
conversion cable connects directly to a standard RS-232 or USB
port.
Serial
Communications
RS-232 serial port for remote display, network or printer supports.
RS-485 transmit only for remote display
Transmission rate: 1200, 2400, 4800, 9600, 19200 or 57600 baud
3 assignable
function keys
Printing, slave weights, and totalising
Battery Backed
Clock Calendar
Battery life 10 years minimum
Approvals FCC, CE, C-tick
Check trade approvals

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Software V1 V2
Summing Slaves 9 9
Summing Subtotals 4 4
Input/Outputs 32 32
Setpoints 8 8
External Keys 8 8
Assignable Functions 8 8
Analogue Output 1 1
Communication 1xRS232 Duplex and 1xRS485 TX only 99
Additional Communications Modules 99
Products 10 250
Automatic Output 2 2
Automatic Output – Custom format 99
Single Automatic Output 99
Printouts 2 2
Custom Printouts 99
Report Printing 99
Table 2: Instrument specifications

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3. Installation
3.1. Introduction
The following steps are required to set up the indicator.
•Inspect indicator to ensure good condition.
•Use connection diagrams to wire up slave indicator serial connections, power and
auxiliary cables as required.
•Use the drill hole template provided for hole locations.
•Connect power to indicator and press <POWER> key to turn the instrument ON.
•Refer to the Setup section page 39 for information on configuring the instrument.
•To turn instrument OFF press and hold <POWER> key for three seconds (until
display blanks).
3.2. General Warnings
•Indicator not to be subject to shock, excessive vibration or extremes of temperature
(before or after installation).
•Inputs are protected against electrical interference, but excessive levels of electro-
magnetic radiation and RFI may affect the accuracy and stability.
•The instrument should be installed away from any sources of excessive electrical
noise.
•For full EMC or for RFI immunity, termination of cable shields and correct earthing
of the instrument is essential.
3.3. Electrical Safety
•For your protection all mains electrical hardware must be rated for environmental
conditions of use.
•Pluggable equipment must be installed near an easily accessible power socket
outlet.
•To avoid the possibility of electric shock or damage to the instrument, always switch
off or isolate the instrument from the power supply before maintenance is carried
out.
3.4. Cleaning
•To maintain the instrument, never use harsh abrasive cleaners or solvents. Wipe
the instrument with a soft cloth slightly dampened with warm soapy water.
3.5. Panel Mount Template
The panel mount template is supplied with the instrument. It shows the location of
the rectangular cut-out and the four mounting screws.

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3.6. Cable Connections
All cable connections are made to the rear of the instrument using pluggable screw
terminals. It is not necessary to tin the ends of the wires with solder or to add crimp
ferrules to the wires, however, these techniques are compatible with the terminals.
Figure 2: Cable Connections
3.7. DC Power (DC PWR + , DC PWR –)
The DC supply need not be regulated, provided that it is free of excessive electrical
noise and sudden transients. The instrument can be operated from a high quality
plug-pack as long as there is sufficient capacity to drive it.
3.8. Summing Slave Serial Connection
♦Summing R420 Indicators using RS485
When summing using this configuration, a M4203 module is required for the master
and each slave.

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♦Summing R320 Indicators using RS232 Ring Network
3.9. Load Cell Connection
As this is a summing indicator, the loadcell connection is not required and should
not be connected.
3.10. Auxiliary Connections
This section provides diagrams to illustrate the communication connections.

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3.10.1. RS-232 Serial
♦Direct Personal Computer Link (RX, TX, GND)
Figure 3: RS-232 - Instrument to PC using COM Port (DB9)
♦Printer Connections (TX, DTR and GND)
Figure 4: RS-232 – Instrument to Printer (DB25)
♦Remote Display (TXD, GND)
Refer to documentation supplied with the Remote Display for connection
details. Connect RX on the Remote Display with TX on the instrument and
connect the RS232 GND signals together.
3.10.2. RS-485 Serial
♦Remote Display (TA, TB)
RS485 is recommended for communicating over distances longer than a few
metres. Connect TA to RA and TB to RB on the remote display.

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3.11. Optical Communications
A temporary infrared communications link can be established between the
instrument and a PC using an optional cable. This connection can be used to
transfer setup information from a PC or to download software upgrades.
The PC end of the cable is a standard female DB9 RS232 connector or a USB
connector. The instrument end of the cable attaches to the left side of the instrument
display.
WARNING
The optical coupling head contains a strong magnet and should not be placed
near any magnetic storage media (eg. credit cards, floppy disks etc.)
Figure 5: Optical Communications attachment

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3.12. Connecting Shields
To obtain full EMC or for RFI immunity, cable shields MUST be connected and
the earth lug on the rear of the instrument must be grounded.
Figure 6 illustrates an example of possible connections. Also shown are the
connecting cables restrained using cable ties fastened by screws into the rear of the
unit.
Figure 6: Cable Shield Connection

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3.12.1. Cable Shield Connection and Earthing
•Care should be taken when connecting shields to maximise EMC or RFI immunity
and minimise earth loops and cross-talk (interference) between instruments.
•For full EMC or for RFI immunity, termination of the cable shields to the connectors
is very important. The earth lug of the instrument must be separately connected to
ground potential via a reliable link.
•The AC power module directly connects the earth lug to the Earth Pin on the power
supply. In installations where earth is available on the power cable, instrument
earthing can be done with this connection.
•The instrument should only be connected to earth via a single reliable link to avoid
earth loops.
•Where each instrument is separately earthed, interconnecting cable shields should
be connected at one end only.
3.13. Regulatory Sealing Requirements
To comply with regulatory sealing requirements for each instrument, (i.e. to ensure
instruments are not accidentally or deliberately tampered with), it is important that
proper sealing procedures be adhered to. Refer to Legal Sealing page 79 for more
information.
3.14. Accessory Module connection
Up to 4 accessory modules can be plugged into the rear of the instrument. There
are many types of modules which can be used. These modules provide additional
features such as:
•power supply options, e.g. mains power or batteries
•communications ports, e.g. RS485 networking
•analog outputs, e.g. 4-20mA or 0-10V
•digital inputs and digital outputs, e.g. external buttons or setpoint outputs
•expanded memory, e.g. DSD functionality.
Caution: Instrument should be switched off before connecting or disconnecting
accessory modules.
Each module will come with a manual which explains the features, installation and
use of the module.
After connection, the module needs to be configured using the instrument setup
menus. All hardware test functions and hardware options (such as serial baud rates
or digital input debouncing) are in the H.WARE (hardware) menu described in
section 8.2 page 42. Module resources (such as digital inputs or serial ports) are
assigned in specific function menus. For example, the output used by a particular
setpoint is set in the setpoint menu.

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A summary of the module resource usage is available in the instrument setup
menus. See ALLOC (Allocation Report) described in section 8.2.1 page 42.
Note: Power supply options can only be connected in the left position. Other
modules can be connected in any position.

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4. Setup Menus
Throughout the setup menus different data entry methods are used. Each method is
described below.
4.1. Accessing Setup Menus
There are two methods to access the Setup area:
•The Full Setup method provides access to all functions in Setup, including legal for
trade settings. Changes in Full Setup mode may result in the calibration counter
being incremented. If an attempt is made to enter Full Setup using the incorrect
passcode, the instrument will respond with the message ENTRY DENIED. Refer
to Passcodes page 35 for more information.
Full Setup
There are 2 methods of accessing full
setup:
1. Press and hold the
<POWER> and
<F3> keys together
for two seconds, or
2.Press the setup button on the rear of
the instrument.
WARNING
All items in all menus will
be enabled in Full Setup.
Care should be taken to
avoid inadvertently
altering the legal for trade
settings.
•Safe Setup restricts access to the Trade Critical settings. Changes made in this
mode will not increment the calibration counter. In this manual, items marked with
⊗indicate that the setting is trade critical. If an attempt is made to enter Safe Setup
using the incorrect passcode, or if an attempt is made to alter a trade critical setting
while in Safe Setup, the instrument will respond with the message ENTRY DENIED.
Refer to Passcodes page 35 for more information.
Safe Setup
Press and hold both
the <POWER> and
<ZERO> keys
together for two seconds.

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4.1.1. Setup Display Prompts
When accessing Full or Safe Setup the instrument will beep twice and enter the
Setup Menus. If a passcode has been configured, the P.CODE prompt will display
and the correct passcode must be entered to continue. Refer to Passcodes page 35
for more information.
If access is granted the following is displayed:
FULL (SAFE) →SETUP →Software Version (eg. V1.0) →Serial Number
→Calibration Counter (eg. C.00010).
(See Calibration Counter page 35 for more information)
4.2. Exiting Full or Safe Setup
To save settings, exit setup and return to the normal weighing mode use one of the
following methods:
Method 1: Press and hold both the <POWER> and <F3> keys together for two
seconds.
Method 2: Press and hold both the <POWER> and <ZERO> keys together for two
seconds.
Method 3: Press the <ZERO> key repeatedly. When End displays press
<TARE>.
Method 4: Press the <POWER> key.
The instrument will beep and then display the following:
Software Version (eg. V1.0) →Calibration Counter (eg. C.00010).
(See Calibration Counter page 35 for more information)
Warning: If the power is interrupted while in setup (i.e. by disconnecting the power
cable), unsaved settings will be lost.
4.3. Menu Navigation
The setup menus are a normal menu tree structure. The current level is shown in
the auxiliary display in the top right corner of the LCD.
Each level of the tree has its own key to step through the items in the menu. The 6
function keys correspond to the 6 menu levels with Zero for Level 1 through to F3 or
level 6.
To access a lower level menu, use the key to the right of your current key. To return
to the upper levels, use the keys to the left of your current key.