Rinstrum C300 Series User manual

C300 Series
Digital Indicator
Reference Manual
S M A R T W E I G H IN G S O L U T I O N S
C300-600 US Rev 1.0.0

C300 Series © 2023 Rinstrum Pty Ltd
Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.0i
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.
Copyright
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.
Disclaimer

C300 Series © 2023 Rinstrum Pty Ltd
Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.0ii
Table of Contents
Contents
1Introduction 1
2 Installation 2
2.1 General Warnings ........................................................................................................ 2
2.2 Environmental Conditions ........................................................................................... 2
2.3 Electrical Safety ........................................................................................................... 3
2.4 Cleaning ........................................................................................................................ 3
2.5 Mounting ........................................................................................................................ 3
2.6 Power Connections ..................................................................................................... 4
2.7 Loadcell Connection .................................................................................................... 4
2.8 Other Connections (Serial, Digital Inputs and Outputs) ........................................... 6
2.9 Optical Communications - US .................................................................................... 9
2.10 Connecting Shields ...................................................................................................... 9
2.11 Accessory Card connection ..................................................................................... 10
3Basic Operation 11
3.1 User Interface ............................................................................................................. 11
3.2 Display ........................................................................................................................ 12
3.3 Has a key been locked? ........................................................................................... 12
3.4 Stability – What is a “Error Motion”? ........................................................................ 13
3.5 Power Key .................................................................................................................. 13
3.6 Zero Key ..................................................................................................................... 14
3.7 Tare Key ..................................................................................................................... 14
3.8 Select Key .................................................................................................................. 15
3.9 Unit Key ....................................................................................................................... 16
3.10 Function 1 & 2 Keys .................................................................................................. 16
4Data Entry 17
4.1 Accessing Setup Menus ........................................................................................... 17
4.2 Exiting Setup Menus .................................................................................................. 18
4.3 Navigation ................................................................................................................... 19
4.4 Editing Option Items .................................................................................................. 20
4.5 Editing Weight and Number Items ........................................................................... 21
4.6 Editing With Functions .............................................................................................. 21
5Setup Menus 22
5.1 General Options ......................................................................................................... 22
5.2 Scale ........................................................................................................................... 25
5.3 Serial ........................................................................................................................... 33
5.4 Set Points ................................................................................................................... 36

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Table of Contents
5.5 App .............................................................................................................................. 38
5.6 Test .............................................................................................................................. 44
5.7 End .............................................................................................................................. 44
6Configuration 45
6.1 General Setup Information ........................................................................................ 45
6.2 Correct Loadcell Selection ....................................................................................... 45
6.3 Filtering Techniques .................................................................................................. 46
6.4 Industrial vs Trade Modes ......................................................................................... 46
6.5 Calibration Counter ................................................................................................... 47
6.6 Passcodes (GEN.OPT:PCODE) ............................................................................. 47
7 Calibration (SCALE:CAL) 48
7.1 Performing a Digital Calibration with Test Weights ............................................... 48
7.2 Performing a Calibration with Direct mV/V Entry ................................................... 50
7.3 Using Linearisation (ED.LIN) .................................................................................... 50
7.4 Using Gravity Compensation (GRAVITY) ................................................................ 51
8 Special Functions (FUNC) 52
8.1 NONE .......................................................................................................................... 52
8.2 TEST ........................................................................................................................... 52
8.3 HOLD .......................................................................................................................... 52
8.4 PEAK HOLD .............................................................................................................. 52
8.5 SINGLE ....................................................................................................................... 53
8.6 Remote Key or Blanking Input .................................................................................. 53
8.7 HI.RES ........................................................................................................................ 53
8.8 TOTAL ......................................................................................................................... 53
8.9 PRINT .......................................................................................................................... 54
8.10 TARGET ..................................................................................................................... 57
8.11 UNITS .......................................................................................................................... 57
8.12 LIVE ............................................................................................................................. 58
9Serial Outputs (SERIAL) 59
9.1 Network rinCMD (RINCMD) ..................................................................................... 59
9.2 Network Protocol SIMPLE (SIMPLE) ...................................................................... 64
9.3 Network REMOTE (REMOTE) ................................................................................. 65
9.4 Automatic Weight Output (SER.AUT) ...................................................................... 66
9.5 Printing (PRINT) ......................................................................................................... 67
10 Setpoints (SETP) 70
10.1 Common Settings ...................................................................................................... 70
10.2 Weigh in (OVER) Setpoints and Weigh Out (UNDER) Setpoints ........................ 71

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Table of Contents
10.3 OVER Setpoint Timing Options ............................................................................... 72
10.4 Status based Setpoint Types ................................................................................... 72
11 Licensing 74
11.1 Unlicensed Software ................................................................................................. 74
11.2 Licence Code Entry from Keypad ............................................................................ 74
12 Upgrading Fimware 75
12.1 Upgrade using flash programming executable ....................................................... 75
12.2 Upgrade in boot mode .............................................................................................. 77
13 Print and Automatic Transmission Tokens 79
13.1 ASCIIcodes ............................................................................................................... 79
13.2 Use of Characters in the Extended ASCIItable ..................................................... 80
13.3 Tokens ........................................................................................................................ 80
14 Appendix - Dimensions 87
15 Appendix - Error Messages 90
15.1 Weighing Errors ......................................................................................................... 90
15.2 Setup Errors ............................................................................................................... 91
15.3 Diagonostic Errors .................................................................................................... 91
15.4 Calibration Errors ...................................................................................................... 92

C300 Series © 2023 Rinstrum Pty Ltd
Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.01
1. INTRODUCTION
The C320 is a precision digital indicator. It uses a sigma-delta analog-to-digital (A/D) converter to
ensure extremely fast and accurate weight readings. This advanced technology allows the C320
to be configured for up to 100,000 divisions at 60 A/D conversions per second. The units have
extended sensitivity adjustment which can handle scales with outputs 0.2-5.0mV/V for full range.
The design is optimized to deliver precision performance on scale bases delivering above
0.5mV/V at display resolutions of up to 10000 divisions.
The C320 digital weight indicator has a RGB LCD with 6 digits, 9 segments with units indicators
and annunciators. The instrument has 8 setpoints which can be set to display using main display
colors. The setup and calibration are digital, with a non-volatile security store for all setup
parameters. The built-in clock can be used to date-stamp printouts. There is an FRAM store to
ensure day to day operating settings (zero, tare, date/time, etc) are retained when power is
removed.
The instrument is fitted with rinLINK communications as standard. This allows a temporary
isolated communications link to be established with a PC using an rinLINK cable, which enables
software upgrades and the use of computerised setup and calibration via the Viewer software.
The C320 includes the following interfaces:
· 2 x Bi-directional RS232 ports
· 1 x Accessory port for connecting communication cards or expansion cards
· 2 x isolated high side switched digital outputs capable of driving 400 mA
· 2 x isolated digital inputs (5-24 V)
Optional accessory modules can be connected using the Accessory port to add more
functionality to the digital weight indicator.
· Communication cards
§ C3 Series RS232 Communications card - M6201
§ C3 Series RS485 Communications card - M6203
§ C3 Series 20 mA Current Loop Communications card - M6204
· Expansion Cards
§ C3 Analogue Expansion card - M6401
§ C3 Series WIFI/ Bluetooth Communications card - M6223

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Reference Manual Rev 1.0.0
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2. INSTALLATION
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 the Configuration for information on configuring the instrument.
· To turn instrument OFF press and hold key for three seconds (until display blanks).
2.1 General Warnings
The C320 is a desktop instrument. It contains precision electronics and must not be subject to
shock, excessive vibration, or extremes of temperature, either before or after installation. The
operating environment must fall within the allowed temperature range and humidity.
The inputs of the C320 are protected against electrical interference, but excessive levels of
electromagnetic radiation and RFI may affect the accuracy and stability of the instrument. The
C320 should be installed away from any sources of electrical noise. The loadcell cable is
particularly sensitive to electrical noise, and should be located well away from any power or
switching circuits. Termination of the loadcell shield at the indicator end (with a sound connection
to the indicator case via the screw terminal shield connection) is important to reduce these
possible effects.
The C320 must be installed in a manner and location that is protected from impacts.
Warning! If the equipment is not installed and used as specified by the manufacturer, the
protection provided bythe equipment maybe impaired.
2.2 Environmental Conditions
The C320 is designed for use in the following environmental conditions:
· C320: Indoor use only. Although the front of the device can be washed down (as per IP65), the
rear of the device, along with cable attachments and optional accessories, must be protected
from liquids and small objects (as per IP30).
· Operating temperature range: -10 °C to 40 °C
· Storage temperature range: -20 °C to 50 °C
· DC supply voltage 5-24 VDC
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2.3 Electrical Safety
For 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.
2.4 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.
2.5 Mounting
The C320 is a compact panel mound indicator which can be used with rear housing to use as a
desk mount indicator.
M6001
Black desk mount housing with non-slip rubber feet for
desktop use. This can hold 4x AA batteries and includes
external 2.1mm power input socket for DC plug pack.
M6003
Water proof (IP65) black desk mount housing supplied
together with 2 x PG7 glands.
M3002
Stainless steel swivel bracket ( 39mm high) for wall
mounting
M3007
Stainless steel bracket for pole mounting
M3014
Stainless steel swivel bracket ( 64mm high) for wall
mounting
M3021
Stainless steel mounting bracket for scale base
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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Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.04
2.6 Power Connections
The C300 series can be powered from a DC power supply. The C300 series requires a 5-24 VDC
power supply. The supply need not be regulated, provided that it is free of excessive electrical
noise and sudden transients. The C300 series can operate from good quality plug-packs of
sufficient capacity to drive both the indicator and the load cells.
The case ground connection is available via the screw terminal on the rear of the unit. The
resistance measured between the case of the indicator and the nearest earth point should be less
than 2 ohms.
2.7 Loadcell Connection
The C300 series can drive any number of full bridge strain gauge loadcells up to the equivalent of
8 x 350 ohm cells.
The span range of the loadcell outputs (the change of signal from the loadcells between zero load
and full gross load) must be within the range of 0.1 to 3.0 mV/V. Very low output scale bases can
be used with the C300 series, 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.
When shunting loadcells, use only good quality metal film resisters with high temperature stability
ratings. Typical values for zero adjustment would fall within the range of 500k ohms (small effect)
to 50k ohms (larger effect).
The C300 series has a mV/V meter test mode which can be used to check scale base signal
output levels. Refer to mV/V test mode .
2.7.1 Cable
When wiring loadcells use only high quality shielded multi-core cable. The cable should be run as
far away from any other cabling as possible (minimum separation distance 150mm). Do not
bundle loadcell cables with power or control switching cables as interference can trigger display
instability, and cause unreliable operation.
The loadcell shield must be installed so as to connect electrically with screw terminal shield
connection in order for the C300 series to provide its full EMC resistance. Any noise absorbed by
the cable shield must be conducted as quickly as possible to the indicator case via screw terminal
shield connection, then direct to a solid earthing point via earthing lug.
2.7.2 6-Wire Connection
The loadcell socket is wired for six wire systems as follows:
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Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.05
Screw Terminal Pin
Function
1
Positive excitation
2
Negative excitation
3
Positive signal
4
Negative signal
5
Positive sense
7
Negative sense
8
Shield
Loadcell wires are connected as shown in below diagram.
Figure 1: 6-Wire Connection
2.7.3 4-Wire Connection
The minimum connectivity requirements for loadcell connection are the connection of four wires
(i.e. ±Excitation and ±Signal). When a four wire loadcell system is connected, it is necessary to
ensure that the excitation voltages are fed into the sense inputs using jumper wires as shown in
below diagram.
Figure 2: 4-Wire Connection

C300 Series © 2023 Rinstrum Pty Ltd
Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.06
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.
Warning! Sense lines must be connected or 4/6 wire jumpers fitted as shown in dashed
lines in above figure. Failure to do this will result in the C300 series displaying an error
message (E00040, E00080 or E000C0).
2.8 Other Connections (Serial, Digital Inputs and Outputs)
The C300 supports the following connections:
· ˆ2 x serial ports (2 bi-directional RS232)
· 2 x isolated digital inputs
· ˆ2 x isolated high side switched digital outputs
· 1 x regulated 5 V output for driving small loads (below 0.5 A)
2.8.1 Serial Port 1 & 2 Connections
C300 has two RS232 (bi-directional) ports. The RS232 drivers are generally used for connecting
external computers or PLCs. The connections are shown below.
Figure 3: RS232 to USB Connection
Pin Number
Function
Direction
Connect to external device
1
Shld
Shield
Connect to cable shield
2 *
5V
5V output
Power for printer or converter (300mA max)
3
TX
RS232 transmit
Receive (Rx pin of the converter)
4
RX
RS232 receive
Transmit (Tx pin of the converter)
5
Gnd
RS232 ground
Ground

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Warning! Pin number 2: 5 V Power output is not an input. Do not attempt to power the
indicator by connecting 5V DC source to this pin.
Ring Networks
C320 can be configured in a Ring Network to connect multiple indicators to a external computer or
PLC. The connections are shown below.
When operating in a Ring Network, the Instruments:
· must have same serial port options, i.e., baud, parity, data bits, stop bits.
· recommended that all indicators use the same power supply.
Figure 4: Ring Network Connections
Remote Display
The remote display documentation should be referred for connection details. Connect Tx to Rx,
Rx to Tx and GND on the remote display as shown in the diagram.

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Figure 5: Remote display Connection
2.8.2 Digital Input and Output Connection
The C300 isolated digital inputs should be connected as shown in the diagram below.
The digital outputs are isolated high side drivers. They should be connected as indicated in the
diagram below.
The power supply for the outputs should be 5 - 24 Vdc, with sufficient current capacity to drive the
solenoids. Each digital output has a drive capacity of up to 400 mA. Cable shields should be
connected to the indicator shield pins as shown.
Figure 6: Input and Output Connections

C300 Series © 2023 Rinstrum Pty Ltd
Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.09
2.9 Optical Communications - US
A temporary infrared communications link can be established between the instrument and a PC
using an rinLINK attachment. This connection can be used to transfer setup and calibration
information from a PC.
The PC end of the cable is a standard USB connector. The instrument end of the cable attaches
to the left side of the indicator display as shown below.
Figure 7: rinLINK connection
Warning! The optical coupling head contains a strong magnet and should not be placed
near anymagnetic storage media (eg. credit cards, floppydisks etc.)
2.10 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. Below image illustrate possible connections.
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 pin of the instrument must be separately connected to ground potential via
a reliable link.
· 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. This also applies to communications cable shields in Ring
Networks, refer Ring Networks .
· 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.
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Figure 8: Shields Connection
2.11 Accessory Card connection
Optional accessory modules can be connected using the Accessory port to add more
functionality to the digital weight indicator.There are two types of accessory cards available.
· Communication cards
· Expansion Cards
These are connected to rear of the indicator using the accessory port.
Figure 9: Accessory Card Connection

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Reference Manual Rev 1.0.0
C300-600 US Rev 1.0.011
3. BASIC OPERATION
The C300 series has a has six digit RGB LCD display and a 7 key keypad. The 7 front panel keys
that control the operation of the instrument. The 8th key (SETUP) is on the rear of the instrument.
The setup key can be sealed to prevent unauthorized tampering of trade critical settings and
calibration. Each of the front panel keys has two separate functions:
· A normal function that is available during normal weighing (as printed on the key). These are
described below.
· A setup function which is available during setup and calibration (as printed beneath the key).
3.1 User Interface
Figure 10: Front and Back of the Indicator
The C3 user interface includes:
1. Check weigh status
7. Multiple range/interval status
2. Units indicator
8. Output status
3. Six digit nine segment RGB LCD display
9. Units Key
4. rinLINK attachment
10. Power Override Switch
5. Weighing status
11. Full setup key
6. Seven key keypad

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3.2 Display
· Display (3): weight readings, errors, information and setup.
· Units indicator (2): units for the weight reading (kilograms (kg), pounds (lb), tonnes (t), and tons
(TN), grams (g), ounces (oz), Newton (N) and Kilonewton (kN).
· Status indicators (1), (5), (7) and (8): The weighing status (5) shows the status of the displayed
reading. The multirange status (7) shows the current multirange operation. The setpoint status
set (8) shows the status of the 2 switch inputs and 2 digital outputs (IO).
Lit when the displayed reading is within ± of a division of true zero.
Lit when the displayed reading is in motion.
Lit when the displayed reading represents net weight.
Lit when the displayed reading is within the zero band.
Lit when the display reading has been held.
Ranges 1, 2 and 3(multiple range/interval modes only)
1and 2lit to indicate when the outputs are active.
Lit to indicate various states during checkweigh.
Lit to indicate that the displayed weight is a total
Lit when operating on battery, to indicate the charge level of the battery
3.3 Has a key been locked?
A single press of each key triggers the weighing operation printed on it. The instrument allows
individual keys to be disabled in the setup. All keys are enabled at the factory, but some keys may
have been intentionally disabled (locked) during installation. If a key has been locked, a long beep

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sounds when it is pressed. If however, the key beeps normally, but does not appear to trigger the
desired action, it may be waiting for the weight reading to settle before the action can proceed.
3.4 Stability – What is a “Error Motion”?
Once a <ZERO>, <TARE> or <PRINT> key is pressed the instrument waits for a stable valid
reading before performing the associated operation. If the weight readings remain unstable or
invalid due to some diagnostic error for longer than 10 seconds, the operation is cancelled and the
ERROR MOTION message is displayed.
To improve the stability of the weight reading, increase the filtering or relax the motion detection
criteria. {Refer to FILTER (Reading Average) and MOTION (Motion Detection) for more
information.}
3.5 Power Key
Power Key
Normal function
Power
The <POWER> key is used to turn the instrument on and off.
To initially turn the instrument on, press the <POWER>key.
The display will show the following:
· Display segments will light and then clear.
· Software Version (e.g. V4.0).
· Calibration Counter (e.g. C.00010). Refer to Calibration
Counter for more information.
· Configuration Counter (e.g. F.00015).
· The current weight will then display.
To turn the instrument off, press and hold the <POWER> key for
three seconds. The instrument will display OFF followed by the 3s
countdown.
Locking: The key can be locked to prevent the instrument being
turned off from the front keypad using KEY.LOC (Front Panel Key
Locking) in General option Settings or using the power override
switch in the back of the indicator.
Long press
function
Turn off
Display the power off countdown, then turn off.
Automatic
Operation
The key has a memory function associated with it. This means that
the power state is remembered even if external power is
interrupted. It is therefore possible to turn the instrument on in the
safe knowledge that it will operate whenever external power is
available and will not need to be manually turned on again if the
power is interrupted.
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3.6 Zero Key
Zero Key
Normal
function
Zero
When an empty scale has drifted away from a true zero reading, this
<ZERO>key is used to perform a zero adjustment on the scale
display. The zero adjustment is stored when power is removed and
is re-used when next powered up.
The amount of weight that may be canceled by the <ZERO>key is
limited via an item in the Setup of the instrument. Refer to Z.RANGE
(Allowable Zero Operating Range) for more information.
Locking: The key can be locked to prevent the normal function is
being performed from the front keypad. Refer to KEY.LOC (Front
Panel Key Locking) for more information.
Long press
function
3.7 Tare Key
Tare Key
Normal
function
Tare
This key is used to temporarily set the scale to zero (such as canceling
the weight of a carton before performing a filling operation). The
display will show the Net weight and the NET annunciator will be lit.
The weight tared is deducted from the allowable range of the scale,
reducing the maximum weight that can be displayed.
Locking: The key can be locked to prevent the normal function is being
performed from the front keypad. Refer to KEY.LOC (Front Panel Key
Locking) for more information.
If PT.CLR is OFF then it is possible to first set a PRESET TARE on the
device and then set aseparate TARE that operates along with the
PRESET TARE. NET = GROSS – PT – TARE . There is a new weight source
called NET.PT which is equal to GROSS – PT. When printing it is
necessary to print GROSS, PRESET TARE, TARE and NET when using this
mode. It is not possible to change the PRESETTARE value if there is an
active TAREvalue set on the instrument.
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Both TARE and PRESET TARE are cleared when ZERO is pressed.
The key application for this is filling/discharging vessels where there
is a known TAREweight of the empty vessel that is entered and the
NET.PT value is then the amount of material remaining in the vessel.
In order to add/remove material from the vessel it is tared and the
net change can be displayed. Instead of going back to GROSS though
when TAREcleared we can go back to NET.PTas an indication of
material available in the vessel.
Long Press
This feature allows the operator to manually enter the tare weight.
After setting the preset tare value, indicator will display Pt followed
by selected preset tare value. When a preset tare weight is being
used the instrument will display Pt before displaying the net weight.
A long press of the <TARE> key will allow editing of the Preset Tare
value. Press the <OK>key to enter the Preset Tare setting. Change
the Preset Tare setting using the <ARROWS> keys.
The Preset Tare setting can be cleared by one of three means:
· Using a long press of the <TARE>key and editing the preset tare
value to zero.
· While the gross load is zero;
Using a short press of the <TARE> key to re-tare the instrument in
the usual manner.
· OR, Using a short press of the <ZERO>key to zero the instrument in
the usual manner.
3.8 Select Key
Select Key
Normal
function
Gross / Net
This key is used to toggle the weight display between the Gross
weight and the Net weight (provided that a Tare has previously been
acquired using the <TARE> key).
Locking: The key can be locked to prevent the normal function from
being performed from the front keypad. Refer to KEY.LOC (Front
Panel Key Locking) for more information.
Long Press
Setup Menus
This will allow to access the Setup Menus.