Rinstrum K410 User manual
400
Series
(
K410, K411, K
412)
Batching Indicator
Reference Manual
R400-613-153
Copyright
All Rights Reserved. No part of this document may be
copied, reproduced, republished, uploaded, posted,
transmitted, distributed, stored in or introduced into a
retrieval system in any form, or by any means (electronic,
mechanical, photocopying, recording or otherwise)
whatsoever without prior written permission of Rinstrum
Pty Ltd.
Disclaimer
Rinstrum Pty Ltd reserves the right to make changes to
the products contained in this manual in order to improve
design, performance or reliability.
The information in this manual is believed to be accurate
in all respects at the time of publication but is subject to
change without notice. Rinstrum Pty Ltd assumes no
responsibility for any errors or omissions and disclaims
responsibility for any consequences resulting from the
use of the information provided herein.
Reference Manual – Software 2.x
004R-613-153 Page 1
Table of Contents
1.INTRODUCTION ...................................................................................................................... 6
1.1.The Manuals Set ........................................................................................................... 7
1.2.Document Conventions ................................................................................................. 7
1.3.Software Comparison K410, K411 and K412 ............................................................... 7
2.SPECIFICATIONS .................................................................................................................... 8
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.Load Cell Connection .................................................................................................. 10
3.8.1.Load Cell Signals and Scale Build .............................................................. 10
3.8.2.4-Wire Connection ......................................................................................
11
3.8.3.6-Wire Connection ...................................................................................... 11
3.9.Auxiliary Connections .................................................................................................. 12
3.9.1.RS-232 Serial .............................................................................................. 12
3.9.2.RS-485 Serial .............................................................................................. 14
3.10.Optical Communications ............................................................................................. 15
3.11.Connecting Shields ..................................................................................................... 16
3.11.1.Cable Shield Connection and Earthing ....................................................... 17
3.12.Regulatory Sealing Requirements .............................................................................. 17
3.13.Accessory Module connection .................................................................................... 17
4.BASIC OPERATION .............................................................................................................. 19
4.1.User Interface Display and Controls ........................................................................... 19
4.1.1.Display ........................................................................................................ 20
4.1.2.Keypad ........................................................................................................ 21
4.2.Power – On/Off ........................................................................................................... 22
4.2.1.Additional Information ................................................................................. 22
4.3.Stability Considerations ...............................................................................................
22
4.4.Zero ............................................................................................................................. 23
4.5.Tare ............................................................................................................................. 23
4.6.Recipe ......................................................................................................................... 24
4.7.Special Functions - Function Keys and External Inputs .............................................. 25
4.7.1.PRINT ......................................................................................................... 25
4.7.2.BLANK (Blanking Input) .............................................................................. 25
4.7.3.SINGLE ....................................................................................................... 25
4.7.4.TEST ........................................................................................................... 26
4.7.5.START ........................................................................................................ 26
4.7.6.PAUSE, ABORT, PSE.ABT, ST.PS.AB, SUSPND ..................................... 26
4.8.Numeric Keypad – White Commands ......................................................................... 27
4.8.1.System Time and Date (Clock - 1 key) ....................................................... 27
4.8.2.Display View (View - 2 key) ........................................................................ 27
4.8.3.Reports (Report - 3 key) ............................................................................. 27
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4.8.4.View and Clear Totals (Total - 4 key) .......................................................... 28
4.8.5.View and Clear ID Names (ID – 5 key) ....................................................... 29
4.8.6.View and Change Pulse Timers (Timers - 6 key) ....................................... 30
4.8.7.View and Change Setpoint Targets (Target - 7 key) ................................... 30
4.8.8.Flight Settings (Flight – 8 key) .................................................................... 31
4.8.9.Tolerance (TOL - 9 key) .............................................................................. 32
4.8.10.Keypad Lock (Lock - . key) ......................................................................... 32
4.8.11.Alibi (+/- key) ............................................................................................... 33
4.8.12.Accessory Modules (Acc – 0 key) ............................................................... 34
4.8.13.Up, Down, OK keys: Products .................................................................... 35
5.INSTRUMENT CONFIGURATION ......................................................................................... 39
5.1.Accessing Full/Safe Setup .......................................................................................... 39
5.1.1.Full Setup .................................................................................................... 39
5.1.2.Safe Setup .................................................................................................. 39
5.1.3.Setup Display Prompts ............................................................................... 39
5.1.4.Exiting Full or Safe Setup ........................................................................... 40
5.2.Passcodes and Key Lock ............................................................................................ 40
5.2.1.Full Setup Passcode ................................................................................... 40
5.2.2.Safe Setup Passcode ................................................................................. 40
5.2.3.Operator Passcode ..................................................................................... 40
5.2.4.Setup Lock-Out ........................................................................................... 40
5.3.Menu Navigation ......................................................................................................... 41
5.4.Data Entry ................................................................................................................... 41
5.4.1.Changing Data ............................................................................................ 42
5.4.2.Numeric Entry ............................................................................................. 42
5.4.3.Selections and Options ............................................................................... 42
5.4.4.Strings ......................................................................................................... 43
6.SCALE CONFIGURATION .................................................................................................... 44
6.1.Scale Parameters (SCALE:BUILD) ............................................................................. 44
6.2.Scale Options (SCALE:OPTIONS) ............................................................................. 45
6.2.1.Industrial versus Trade Modes (USE) ......................................................... 45
6.2.2.Filtering Techniques (FILTER) .................................................................... 45
7.CALIBRATION (SCALE:CAL) ............................................................................................... 46
7.1.1.Calibration Counter ..................................................................................... 46
7.1.2.Digital Calibration with Test Weights (ZERO and SPAN) ........................... 46
7.1.3.Calibration with Direct mV/V Entry (DIR.ZER and DIR.SPN)...................... 48
7.1.4.Using Linearisation (ED.LIN and CLR.LIN) ................................................. 49
8.NETWORK PROTOCOL ........................................................................................................ 51
8.1.Introduction ................................................................................................................. 51
8.2.Network Protocol ......................................................................................................... 51
8.2.1.Basic Format ............................................................................................... 51
8.2.2.Termination ................................................................................................. 52
8.2.3.Error Handling ............................................................................................. 53
8.2.4.Ring Network Enhancement ....................................................................... 53
8.2.5.Calibrating an instrument over a network ................................................... 54
8.3.Network Protocol BARCODE (K411 and K412 only) .................................................. 54
8.4.Protocol B Examples ................................................................................................... 55
9.AUTOMATIC WEIGHT OUTPUT ........................................................................................... 58
9.1.Overview ..................................................................................................................... 58
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004R-613-153 Page 3
9.2.Auto Weight Format String .......................................................................................... 58
10.PRINTING ............................................................................................................................... 60
10.1.Overview ..................................................................................................................... 60
10.2.Print ID ........................................................................................................................ 60
10.3.Record printouts .......................................................................................................... 60
10.4.Batch printouts ............................................................................................................ 61
10.5.Report printouts ........................................................................................................... 63
10.6.Custom printing ........................................................................................................... 64
11.SETPOINTS ........................................................................................................................... 65
11.1.Overview ..................................................................................................................... 65
11.2.Outputs ........................................................................................................................ 65
11.3.Common Settings ........................................................................................................ 65
11.4.Weigh in (OVER) Setpoints and Weigh Out (UNDER) Setpoints ............................... 66
11.4.1.Additional Settings ...................................................................................... 67
11.4.2.Status Based Setpoint Types ...................................................................... 68
11.5.Batching Based Setpoint Types .................................................................................. 68
11.6.Logic Setpoint Types ................................................................................................... 69
12.ANALOGUE OUTPUT .......................................................................................................... 72
12.1.Overview ..................................................................................................................... 72
12.2.Configuration of Hardware .......................................................................................... 72
12.2.1.Configuration ............................................................................................... 72
12.2.2.Calibration ................................................................................................... 72
12.2.3.Testing ........................................................................................................ 72
12.3.Analogue Weight Transmission .................................................................................. 72
13.BATCHING ............................................................................................................................. 73
13.1.Terminology ................................................................................................................ 73
13.2.Predefined Applications (K411 and K412 only) ........................................................... 73
13.3.Stage Types ................................................................................................................ 73
13.3.1.FILL Stage .................................................................................................. 74
13.3.2.DUMP Stage ............................................................................................... 75
13.3.3.PULSE Stage .............................................................................................. 76
13.4.Batching specific keys ................................................................................................. 77
13.4.1.<RECIPE> key - recipe information ............................................................ 77
13.4.2.Timers (6 key) – time duration of PULSE stages ........................................ 77
13.4.3.Flight (8 key) – in-flight and preliminary targets for each material .............. 77
13.4.4.Tolerance (9 key) – high and low tolerance for each fill stage .................... 78
13.5.Setpoints ..................................................................................................................... 78
13.6.Special Functions ........................................................................................................ 78
13.7.General Setup ............................................................................................................. 79
13.8.Stage Specific Setup ................................................................................................... 80
13.8.1.Outputs ....................................................................................................... 80
13.8.2.Inputs .......................................................................................................... 80
13.8.3.Delays ......................................................................................................... 81
13.8.4.FILL Correction (Jogging and In-flight) ....................................................... 81
13.8.5.DUMP Correction ........................................................................................ 82
13.9.Pause and Abort ......................................................................................................... 82
13.10.Batching Example ....................................................................................................... 82
14.SETUP MENUS ...................................................................................................................... 85
14.1.GEN.OPT (General options) ....................................................................................... 85
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14.1.1.DATE.F (Date format) ................................................................................. 85
14.1.2.PCODE (Security passcodes) ..................................................................... 85
14.1.3.KEY.LOC (Key Function Access Control) ................................................... 86
14.1.4.DISP (Display options) ................................................................................ 87
14.1.5.ID.NAME (ID name strings) ........................................................................ 87
14.1.6.POWER (Power options) ............................................................................ 88
14.1.7.STR.EDT (String editor default mode) ........................................................ 88
14.1.8.USR.DEF (Set all non-calibration settings to defaults) ............................... 88
14.2.H.WARE (Hardware Configuration & Test) ................................................................. 88
14.2.1.LC.HW ........................................................................................................ 88
14.2.2.SER1.HW, SER2.HW ................................................................................. 89
14.2.3.IO.HW ......................................................................................................... 90
14.2.4.ANL.HW ..................................................................................................... 91
14.2.5.DSD.HW ..................................................................................................... 91
14.2.6.ETH.HW ...................................................................................................... 91
14.2.7.ETH.DEF (Set the M4221 Ethernet module to defaults) ............................. 92
14.3.SCALE (Load cell options and calibration) .................................................................. 93
14.3.1.BUILD (Scale parameters) .......................................................................... 93
14.3.2.OPTION (Scale options) ............................................................................. 94
14.3.3.CAL (Scale calibration) ............................................................................... 95
14.3.4.QA (QA alarm) ............................................................................................ 95
14.4.FUNC (Special functions) ............................................................................................ 96
14.4.1.NUM (Number of special functions) ............................................................ 96
14.4.2.SFn: TYPE (Function Types) ...................................................................... 96
14.4.3.SFn: KEY (Function Key / Remote Input) ................................................... 96
14.4.4.SFn: PRINT (Printing Functions) ................................................................ 97
14.4.5.SFn: SINGLE (Single Serial Output Functions) .......................................... 97
14.4.6.SFn: BLANK (Blanking Functions) .............................................................. 97
14.4.7.SFn: START, SFn: PAUSE, SFn:ABORT, SFn PSE.ABT, ST.PS.AB, SFn:
SUSPND (Batching Functions) ................................................................................... 98
14.4.8.SFn: THUMB (Thumbwheel Product Selection) ......................................... 99
14.4.9.SFn: REM.KEY (Remote Key Functions) ................................................... 99
14.4.10.SFn: REPORT (Report Functions) : .......................................................... 100
14.5.SER.NET (Network communications) ....................................................................... 100
14.6.SER.AUT (Automatic transmit) ................................................................................. 101
14.6.1.NUM (Number of Automatic Transmissions) ............................................ 101
14.6.2.AUTO.n (Automatic Output Configuration) ............................................... 101
14.7.PRINT (Printouts) ...................................................................................................... 102
14.7.1.NUM (Number of printouts) ....................................................................... 102
14.7.2.HEADER (Print header) ............................................................................ 102
14.7.3.FOOTER (Print footer) .............................................................................. 102
14.7.4.PAGE (Print page options) ........................................................................ 103
14.7.5.SPACE (Print blank space options) .......................................................... 103
14.7.6.PRINT.n … (Printout options) ................................................................... 104
14.8.SETP (Setpoints) ...................................................................................................... 105
14.8.1.NUM (Number of setpoints) ...................................................................... 105
14.8.2.SETP1 … SETP8 (Setpoint options) ........................................................ 105
14.9.BATCH ...................................................................................................................... 108
14.9.1.APP (Applications) (K411 and K412 only) ................................................ 108
14.9.2.GEN (General) .......................................................................................... 109
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14.9.3.MAT (Material) .......................................................................................... 111
14.9.4.STAGES ................................................................................................... 111
14.9.5.STAGE.n:FILL ........................................................................................... 112
14.9.6.STAGE.n:DUMP ....................................................................................... 114
14.9.7.STAGE.n: PULSE ..................................................................................... 115
14.10.ANL.OUT (Analogue Output) .................................................................................... 116
14.11.End (Save and exit) ................................................................................................... 116
15.APPENDIX 1: DIMENSIONS ............................................................................................... 117
15.1.Dimensions ............................................................................................................... 117
15.2.Legal Sealing Details ................................................................................................ 119
15.2.1.Electronic Seal .......................................................................................... 119
15.2.2.Trade Label ............................................................................................... 119
15.2.3.Lead Seals ................................................................................................ 120
15.2.4.Destructible Sticker Seals ......................................................................... 121
APPENDIX 2: PRINT AND AUTOMATIC TRANSMISSION TOKENS ......................................... 122
15.3.ASCII codes .............................................................................................................. 122
15.4.Tokens ...................................................................................................................... 123
15.4.1.Non-paged generic tokens ........................................................................ 123
15.4.2.Page tokens .............................................................................................. 123
15.4.3.Page 0, 7 tokens: Weight Information ....................................................... 124
15.4.4.Page 1, 2 tokens: Current Stage and Batch Information .......................... 125
15.4.5.Page 4, 6 tokens: Product and Grand Total Information ........................... 125
15.4.6.Page 8 Tokens: Material Totals ................................................................ 126
15.4.7.Format tokens ........................................................................................... 126
16.APPENDIX 3: COMMUNICATIONS REGISTERS ............................................................... 128
17.APPENDIX 4: SETUP MENU QUICK REFERENCE ........................................................... 135
18.APPENDIX 5: ERROR MESSAGES .................................................................................... 140
18.1.Overview ................................................................................................................... 140
18.2.Weighing Errors ........................................................................................................ 140
18.3.Setup Errors .............................................................................................................. 140
18.4.Diagnostic Errors ....................................................................................................... 141
18.4.1.Calibration Errors ...................................................................................... 142
18.5.Pause Conditions ...................................................................................................... 143
19.GLOSSARY .......................................................................................................................... 144
19.1.Glossary Terms ......................................................................................................... 144
19.2.List of Figures ............................................................................................................ 145
19.3.List of Tables ............................................................................................................. 145
20.INDEX ................................................................................................................................... 146
Reference Manual – Software 2.x
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1. Introduction
This instrument is a precision digital indicator designed for gain in weight batching
applications. It supports up to 32 input/outputs.
It may be operated from either a DC power source (12 VDC to 24 VDC) 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.
The instrument provides zero, tare and recipe on the fixed function keys and supports
special functions (e.g. start, pause, remote key etc.), 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 (e.g. zero, tare and clock) are retained when power is
removed.
The indicator supports optical communications as a standard which allows a temporary
isolated communications link to be established with a PC. Software upgrades, the use of
computerised setup and calibration can then be done using a PC. The RS-232
communications port can be used for printer driving, connection to a remote display or PC.
The RS-485 transmit only communications port can be used for remote displays. There is
a built-in clock for date-stamping printed outputs.
Figure 1: Weight Indicator
Reference Manual – Software 2.x
004R-613-153 Page 7
1.1. 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.
1.2. 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.
1.3. Software Comparison K410, K411 and K412
The table below only lists the features that vary between each type of software.
Feature K410 K411 K412
No. of Materials 1 6 20
Barcode protocol
Materials set per product
Reference Manual – Software 2.x
Page 8 004R-613-153
2. Specifications
Performance
Resolution Up to 100,000 divisions, minimum of 0.25V/division
Zero Cancellation +/- 2.0mV/V
Span Adjustment 0.1mV/V to 3.0mV/V
Stability/Drift Zero: < 0.15V/C (+ 10ppm of deadload max)
Span < 10 ppm/C, Linearity < 20ppm, Noise < 0.2Vp-p
Excitation 7.4 volts for up to 16 x 350 or 32 x 700-ohm load cells (4-wire or
6-wire plus shield)
Maximum total load cell resistance: 1,000 ohms
A/D Type 24bit Sigma Delta with ±8,388,608 internal counts
Operating
Environment Temperature: –10 to +50C ambient
Humidity: <90% non-condensing
Storage: –20 to +50C ambient
IP65 when panel mounted or with rear boot (otherwise IP40)
Case Materials ABS, Silicon Rubber, Nylon, Acrylic (no halogen used)
Packing Weights Basic Indicator: 0.7kg
Digital
Display LCD with 4 alpha-numeric displays and LED backlighting:
Primary display: 6 x 28.4mm high digits with units and
annunciators
2nd display: 9 x 17.6 mm digits with units
3rd display: 8 x 6.1 mm digits
4th display: 4 x 7.6 mm digits
Setup and Calibration Full digital with visual prompting in plain messages
Digital Filter Sliding window average from 0.1 to 30.0 seconds
Zero Range Adjustable from +/- 2% to +/- 20% of full capacity
Power Input
Standard Power Input 12 to 24VDC (15 VA max) - ON/OFF key with memory feature
Variants
M4101 AC
AC power supply
Input: 110/240VAC 50/60Hz
Output: 12VDC 15VA
M4102 Battery
2.5AH NiMH rechargeable battery pack
Charger Input: 110/240VAC 50/60Hz
Output: 12VDC
Features
Optical Data
Communications
Magnetically coupled optical communications support. Optional
conversion cable connects directly to a standard USB or RS-232
port.
Correction 10-point linearity correction
Serial Outputs 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, start, pause and abort batching
Battery Backed Clock
Calendar
Battery life 10 years minimum
Approvals FCC, CE, C-tick, Check trade approvals
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004R-613-153 Page 9
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 load cell, power and auxiliary cables as
required.
Insert any accessory modules that are being used.
Use the drill hole template provided for hole locations.
Connect power to indicator and press <POWER> key to turn the instrument on.
Refer to 14 Setup Menus page 85 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.
The load cell cable is particularly sensitive to electrical noise and should be located
well away from any power or switching circuits.
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.
Reference Manual – Software 2.x
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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 both it and the load cells.
3.8. Load Cell Connection
3.8.1. Load Cell Signals and Scale Build
Very low output scale bases may be used but may induce some instability in the
weight readings when used with higher resolutions. Generally speaking, the higher
the output, or the lower the number of divisions, the greater the display stability and
accuracy.
The instrument can display the millivolt-per-Volt (H.WARE:LC.HW:MVV) reading
which can be used to check scale base signal output levels. For more information,
refer to 14.2.1 LC.HW page 88.
The instrument may be connected for either 4-wire or 6-wire operation. Use 4-wire
when external SENSE connections are not available. Refer to 14.3.1 BUILD (Scale
parameters) page 93 for setup menu.
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004R-613-153 Page 11
3.8.2. 4-Wire Connection
The minimum connectivity requirements are the connection of four wires (i.e.
±Excitation and ±Signal). Internally the instrument has a precision analogue switch
that can be used to connect the Sense+ and Sense– lines directly to the Excitation+
and Excitation– lines.
Any addition to the load cell manufacturer's cable length using 4-wire connection is
only recommended for short cable runs. Where long additions to cable lengths are
needed, a 6-wire extension is required.
The BUILD:CABLE option must be set to 4-WIRE to allow for 4-wire connection,
refer to 14.3.1 BUILD (Scale parameters) page 93.
Figure 3: 4-Wire Connections
3.8.3. 6-Wire Connection
The excitation and signal lines are connected the same as for a 4-wire installation.
The extra two wires (Sense + and –) should be connected to the Excitation + and –
lines as close as possible to the load cell itself. Typically, these connections are
made in a load cell termination box.
The BUILD:CABLE option must be set to 6-WIRE to allow for true 6-wire
connection, refer to 14.3.1 BUILD (Scale parameters) page 93.
Figure 4: Load cell Connections
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3.9. Auxiliary Connections
This section provides diagrams to illustrate the communication connections.
3.9.1. RS-232 Serial
Direct Personal Computer Link (RX, TX, GND)
Figure 5: RS-232 - Instrument to PC using COM Port (DB9)
Printer Connections (TX, DTR and GND)
Figure 6: 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.
Ring Networks: Multiple Instruments to PC (RXD, TXD, GND)
Instruments with software revision V2.31+ can be configured in a Ring Network via
a M42xx module (software revision 1.01+). This feature is not available on the
inbuilt serial port. This also requires an enhancement in the PC software.
The Short Ring Network layout (Figure 7) can be used in situations up to a total
cable run length of about 150m (500 ft.) at 9600 baud in a clean EMC environment.
Reference Manual – Software 2.x
004R-613-153 Page 13
If there are communications errors, or for longer cable runs, lower the baud rate to
4800 or 2400, and/or use the Long Ring Network in Figure 8, which uses a separate
return path from the ‘Last Instrument’ to the PC.
When operating in a Ring Network, the Instruments must have:
same serial port options, i.e., baud, parity, data bits, stop bits;
unique addresses.
Figure 7: RS-232 Short Cable Runs (Ring Network using COM Port)
Reference Manual – Software 2.x
Page 14 004R-613-153
Figure 8: RS-232 Long Cable Runs (Ring Network using COM Port)
3.9.2. 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.
Multi-drop Networks: Multiple instruments to PC (TA, TB, RA, RB)
Using a RS485 module, it is possible to implement a multi-drop network. This
feature is not available on the inbuilt serial port.
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Ring Networks: Multiple instruments to PC (TA, TB, RA, RB)
Instruments with software revision v2.40+ can be configured in a ring network via a
M42xx module (software revision v1.01+). This feature is not available on the
in-built serial port. This also requires an enhancement in the PC software.
3.10. Optical Communications
A temporary infrared communications link can be established between the
instrument and a PC using an optional opto-link cable. This connection can be used
to transfer setup and calibration information from a PC or to download software
upgrades.
The PC end of the cable is a standard female DB9 RS232 or 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 (e.g. credit cards, floppy disks etc.)
Figure 9: Optical Communications attachment
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3.11. 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 10 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 10: Cable Shield Connection
Reference Manual – Software 2.x
004R-613-153 Page 17
3.11.1. 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.
Caution: Some load cells connect the cable shield directly to the load cell (and
therefore the scale base). Connection of the load cell cable shield in this situation
may be site specific.
3.12. Regulatory Sealing Requirements
To comply with regulatory sealing requirements and ensure instruments are not
accidentally or deliberately tampered with, it is important that proper sealing
procedures be adhered to. These are discussed in 15.2 Legal Sealing Details page
119.
3.13. Accessory Module connection
Up to four (4) accessory modules can be plugged into the rear of the instrument.
There are many types of modules which can be used providing additional features
such as:
power supply options, e.g. mains power or batteries
communications ports, e.g. Ethernet or RS485 networking
analogue outputs, e.g. 4-20mA or 0-10V
digital inputs and digital outputs, e.g. external buttons or setpoint outputs
Alibi memory, e.g. DSD functionality
The slots on the rear of the instrument are marked as 1, 4, 5 and 6 (note 2 and 3
are not available).
Caution: Instrument must be switched off before connecting or disconnecting
accessory modules.
Reference Manual – Software 2.x
Page 18 004R-613-153
Basic steps for installation of modules:
Check instrument switched off.
Connect module. Refer to the specific module manual for wiring details.
Switched instrument on.
Enter safe setup or full setup.
Go to applicable area in setup menu and allocation functions to hardware as
required.
Review hardware allocation and test. Refer to 14.2 H.WARE (Hardware
Configuration & Test) page 88.
The details of the accessories can be viewed using the Acc key (long press of the 0
key), refer to 4.8.12 Accessory Modules (Acc – 0 key) page 34.
Power supply options can only be connected in the left position (Slot 1: SL-1). Other
modules can be connected in any position.
Figure 11 - Instrument Module View
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