1203
Weight Transmitte
r
Reference Manual
For use with Software Versions 1.0 and above
1203-600-172
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
Page 2
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.
“Everything should be made as simple as possible, but not simpler.”
- Albert Einstein -
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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Table of Contents
1. INTRODUCTION....................................................................................................... 5
1.1. Document Conventions .................................................................................. 5
2. SPECIFICATIONS .................................................................................................... 6
3. INSTALLATION ........................................................................................................ 7
3.1. Introduction..................................................................................................... 7
3.2. Power Supply.................................................................................................. 7
3.3. Load Cell Signals and Scale Build.................................................................. 7
3.4. Cable Shield Connection and Earthing........................................................... 7
3.5. Load Cell Connection ..................................................................................... 8
3.5.1. 6-Wire Connection.....................................................................................8
3.5.2. 4-Wire Connections...................................................................................9
3.6. Intrinsic Safety .............................................................................................. 10
3.7. Serial Communication Ports ......................................................................... 10
3.7.1. Serial 1: RS-232 Port...............................................................................11
3.7.2. Serial 2: RS-485 Port...............................................................................11
3.7.3. Multi-Drop Networking.............................................................................12
3.7.4. RS-232 Connection .................................................................................12
3.7.5. RS-485 Connection .................................................................................13
3.8. Input / Output: Setpoints............................................................................... 14
3.9. Input / Output: Inputs .................................................................................... 15
3.10. Analog Output............................................................................................... 16
3.11. Light Emitting Diode (LED) ........................................................................... 16
3.12. 1203 Viewer Software................................................................................... 16
4. CONTROLS ............................................................................................................ 17
5. DIGITAL SETUP ..................................................................................................... 18
5.1. Introduction................................................................................................... 18
5.2. Basic Weighing Terminology ........................................................................ 18
5.3. Direct mV/V Operation.................................................................................. 19
5.4. Filtering Techniques ..................................................................................... 19
5.4.1. FIR Filter .................................................................................................19
5.4.2. Digital Averaging .....................................................................................19
6. CALIBRATION........................................................................................................ 20
6.1. Introduction................................................................................................... 20
6.2. Digital Calibration with Test Weights ............................................................ 20
6.2.1. Digital Zero Calibration Routine...............................................................20
6.2.2. Digital Span Calibration Routine..............................................................20
6.3. Digital Direct mV/V Calibration...................................................................... 21
6.3.1. Digital Zero Calibration Routine...............................................................21
6.3.2. Digital Span Calibration Routine..............................................................21
6.4. Analog Output Calibration............................................................................. 21
6.4.1. Analog Calibration Routine ......................................................................21
7. SERIAL OUTPUTS ................................................................................................. 22
7.1. Introduction................................................................................................... 22
7.2. Automatic Weight Output.............................................................................. 22
7.3. Networking the 1203..................................................................................... 22
7.3.1. RS-485 Termination Resistors.................................................................22
8. EXTENDED FUNCTIONS....................................................................................... 23
8.1. Setpoints....................................................................................................... 23
8.1.1. Introduction .............................................................................................23
8.1.2. Status Indication......................................................................................23
8.1.3. Connection ..............................................................................................23
8.1.4. Operation ................................................................................................23
8.1.5. Example 1: Control Level of Product in 2000kg Tank ..............................24
8.1.6. Example 2: Control Weighing of Product Out of Silo into 100kg Drums ..24
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8.2. Remote Input ................................................................................................ 24
9. OPTIONS ................................................................................................................ 25
9.1. Display/Keys................................................................................................. 25
9.1.1. Installation...............................................................................................25
9.1.2. Setup and Calibration ..............................................................................25
10. COMMANDS........................................................................................................... 26
10.1. Overview....................................................................................................... 26
10.1.1. Commands and Queries..........................................................................26
10.1.2. Responses ..............................................................................................26
10.1.3. Parameters..............................................................................................26
10.1.4. Termination .............................................................................................26
10.2. Command Details ......................................................................................... 27
10.2.1. ACL: Set Automatic Temperature Calibration On/Off ..............................27
10.2.2. ADR: Set Address ...................................................................................28
10.2.3. ANL: Set Analog Output ..........................................................................29
10.2.4. ANM: Set Analog Output Maximum and Minimum...................................30
10.2.5. ASF: Set Filtering ....................................................................................31
10.2.6. BDR: Set Baud Rate................................................................................32
10.2.7. COF: Set Output Format .........................................................................33
10.2.8. ESR: Query Error Status .........................................................................36
10.2.9. FCN: Execute A Function ........................................................................37
10.2.10. HYS: Set Hysteresis................................................................................38
10.2.11. IAD: Set Scale Build ................................................................................39
10.2.12. IDN: Set Identification..............................................................................40
10.2.13. LDW: Calibrate Zero Dead Weight ..........................................................41
10.2.14. LIV: Set Limit Value.................................................................................42
10.2.15. LWT: Calibrate Span...............................................................................43
10.2.16. MSV?: Query Measured Weight Value ....................................................44
10.2.17. RBT: Remote Button Settings .................................................................45
10.2.18. RES: Reset..............................................................................................47
10.2.19. SER: Set Serial Communications Settings ..............................................48
10.2.20. STP: Stop Continuous Transfer...............................................................49
10.2.21. Sxx: Select Unit .......................................................................................50
10.2.22. TAR: Tare................................................................................................51
10.2.23. TDD: Load/Save Setup............................................................................52
11. APPENDIX.............................................................................................................. 53
11.1. Glossary of Terms ........................................................................................ 53
11.2. List of Figures and Tables ............................................................................ 53
12. INDEX ..................................................................................................................... 54
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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1. Introduction
The 1203 is a precision digital weight transmitter using the latest Sigma-Delta A/D
converter to ensure extremely fast and accurate weight readings.
The setup and calibration are digital, with a non-volatile security store. All setup
parameters and important operating settings (Zero / Tare, etc.), are retained when power
is removed.
The 1203 can output both 4-20mA and 0-10V analog. These outputs can be calibrated by
the user to output any range.
The instrument has two trip points with output drive and status display via LEDs.
The 1203 provides two serial outputs. These allow communication with external
computers, PLCs and remote displays. Serial 1 provides RS-232 while Serial 2 provides
4-wire RS-485.
Figure 1: 1203 Weight Transmitter
1.1. Document Conventions
The following conventions (typographical) are used throughout this Reference
Manual.
Bold Text
Bold text denotes words and phrases to note.
^
This symbol denotes one space (used in 1203 Commands)
… Ellipses indicate an incomplete listing. For space considerations in
this Reference Manual complete listings of returned Command
responses may not be shown.
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2. Specifications
General
Operating
Environment
Temperature: –10 to +50°C ambient, Humidity: <90% non-condensing
Power Supply 12VDC at 500mA max to 24VDC at 250mA max
Instrument
Variations
1203 Weight
Transmitter
Enclosure Class: IP55+/NEMA Enclosure Material: Aluminium
Dimensions: 170 x 120 x 55 or 170 x 145 x 55 including cable gland
P/No: 1203
1203 Weight
Transmitter with
Display
Enclosure Class: IP55+/NEMA Enclosure Material: Aluminium
Dimensions: 170 x 120 x 55 or 170 x 145 x 55 including cable gland
Window: Acrylic/polycarbonate (Not for use in full sun). P/No: 1203/D
1203 Weight
Transmitter - PCB
Only
P/No: 1203/B
Analog Input
Stability/Drift
Zero: <0.1µV/°C, Span: <10ppm/°C,
Linearity: <20ppm, Noise: <0.05µVp-p
Span Adjustment 0.1mV/V to 3mV/V capacity
Calibration Digital, Non-Volatile
Digital Filter Averaging 1, 2, 4, 8, 16, 32, 64, 128 or 256 readings (10ms to 2.56s)
A/D Converter Type: 24bit Sigma Delta
Resolution: 8,388,608 internal counts
Load Cells Excitation: 8VDC Connection: 6-wire + shield
Available Excitation Current: 150mA (6 x 350Ω load cells)
Sampling Rate 100Hz
Analog Output
Type Configurable (4-20mA, 0-24mA, 0-20mA, –10-10V, 0-10V, 2-10V, 0-5V,
1-5V, etc)
Overall Error <0.1%
Isolation >500V
Impedance
Maximum current-loop impedance: 1000Ω
Minimum impedance between voltage outputs: 2000Ω
Update Rate 100Hz (50Hz when scaled to user calibration)
Communications
Serial Output RS-485 full duplex and RS-232 full duplex
Capability Automatic transmit and network
Network Protocol HBM AED/WE2110
Input / Output
Isolated Input Number of isolated inputs: 1
Input Voltage Range Active input voltage range: 5-28VDC
Input Current
Requirements
1.5mA at 5VDC to 13mA at 28VDC
Transistor Output Number of isolated transistor outputs: 2
Load Output Maximum load on output: 300mA
Voltage Output Maximum operating voltage on output: 30VDC
Output Protection Reverse and short-circuit protected
Output Update Rate 100Hz (50Hz when scaled to user calibration)
Options
1203 Display Service
Tool
6 LED digits 14mm high with 4 Annunciators, 4 Units and 4 Buttons
P/No: 1203/S
1203 Viewer Package Viewer software, RS-232 cable and Reference Manual. P/No: 1203/V
Other
Calibration Transferable calibration
Safety Standards C-tick approved. CE approved. UL approval pending.
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3. Installation
3.1. Introduction
The 1203 must not be subject to shock, excessive vibration, or extremes of
temperature, either before or after installation.
The inputs of the 1203 are protected against electrical
interference, but excessive levels of electro-magnetic
radiation and RFI may affect the accuracy and stability of the
instrument. The 1203 should be installed away from any
sources of electrical noise. The load cell cable is particularly
sensitive to electrical noise and should be located well away
from any power or switching circuits.
Figure 2: Power Supply
3.2. Power Supply
The power supply is connected using the power connector (J12). The DC supply
need not be regulated, provided that it is free of excessive electrical noise and
sudden transients. The 1203 can be operated from a high quality plug-pack as long
as there is sufficient capacity to drive both it and the load cells.
The unit is constructed to use 12-24 VDC only. Voltages outside this range may
cause improper operation or damage.
3.3. Load Cell Signals and Scale Build
Very low output scale bases can be used with the 1203 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 1203 has a millivolt-per-volt reading available which can be used to check scale
base signal output levels.
IMPORTANT NOTICE
3.4. Cable Shield Connection and Earthing
• Care should be taken when connecting shields to maximise EMC immunity and
minimise earth loops and cross-talk (interference) between instruments.
• For EMC immunity, termination of the load cell shield at the 1203 end is important
(ie. with connection to the 1203 case via the shield connection).
• 1203 enclosure is directly connected to the shield connections on the terminal
blocks.
• 1203 should 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 shield in this situation may be site
specific.
• Unit complies with relevant EMC standards provided case ground connection is
correctly made. Resistance measured between 1203 case and nearest earth point
should be less than 2 ohms.
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3.5. Load Cell Connection
The following provides information on 6-wire and 4-wire connections.
3.5.1. 6-Wire Connection
When wiring load cells, 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 load cell cables with power or control-switching
cables as interference can trigger display instability, and cause unreliable
operation.
The connection is made using the load cell connector (J4). The load cell is wired for
a 6-wire system as follows:
Terminal Function
1 Positive Signal
2 Negative Signal
3 Positive Sense
4 Negative Sense
5 Positive Excitation
6 Negative Excitation
7,8 Shield
Table 1: 6-Wire Connections
*For more information on shielding refer to page 7.
Figure 3: Load Cell: 6-Wire Connections
Note: Sense lines MUST be connected.
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3.5.2. 4-Wire Connections
The 1203 is not fitted with auto-sensing of the load cell excitation. This is intentional
on this unit to optimise the performance across all applications, including those
involving intrinsic safety barriers.
When a 4-wire load cell system is connected, terminals 3 & 5 and 4 & 6 must be
joined by wire bridge. This is to ensure that the excitation voltages are fed into the
sense inputs (terminals 3 & 4). Failure to do this will result in the 1203 displaying
the error code E0040 and/or E0080. Refer to Error Codes page 36 for more
information. The unit will not operate correctly if the sense wire bridges are not
connected.
*For more information on shielding refer to page 7.
Figure 4: Load Cell: 4-Wire Connections
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3.6. Intrinsic Safety
The 1203 has been designed to operate in installations with intrinsic safety barriers
down to Class 1, Zone 1. The following diagram shows a suggested method of
installing the 1203 with safety barriers for up to four load cells.
Figure 5: Sample Installation Method - 1203 with Safety Barriers
Note: As the regulations concerning intrinsic safety can vary from country to
country, consult local regulations before attempting such an installation. Special
attention should be paid to the grounding of the 1203 and the barrier system.
3.7. Serial Communication Ports
There are two serial communication ports on the 1203.
• Serial 1 is a full duplex RS-232 connection.
• Serial 2 is a full duplex, 4-wire RS-485 connection.
Both ports can be used as network or automatic output ports. The two ports can be
connected using the communications connector (J6) or using the DB9 connector
(J1). The DB9 is primarily intended for use as a short-term configuration and
diagnostic connection.
The serial ports on the 1203 are not completely independent. Commands cannot
be sent to the 1203 on both ports simultaneously. Also, the 1203 cannot identify
which port received the command so all replies are sent to the configured network
port(s).
The serial ports are configured using the SER and BDR commands. The Comms
Reset switch (SW1) sets the serial ports to a known state. For versions 1.6 and
below, this state will become permanent when a save is performed. For versions
1.7 and above, this state (viewer mode) is temporary and another press will return
the 1203 to normal operation.
Short Press (< 2 seconds)
Will Set:
• Comms to 9600n81
• RS-232 to Network
• RS-485 to OFF
Long Press (>= 2 seconds)
Will Set:
• Comms to 9600n81
• RS-232 to OFF
• RS-485 to Network
Figure 6: Comms Reset Switch (SW1)
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3.7.1. Serial 1: RS-232 Port
All connections for this port are on the communications connector (J6) and on the
DB9 connector (J1).
Note: Terminals 5 to 7 of the communications connector (J6) are connected
directly to pins 2, 3 and 5 of the DB9 connector (J1). This provides for quick and
convenient connection of test or debug systems.
The connections for the outputs are shown below:
J1 Pin No J6 Terminal No Function Description Connect to
2 7 RXD RS-232
Receive Line
External Device
Transmitter
(Usually Pin 3)
3 5 TXD RS-232
Transmit Line
External Device
Receiver
(Usually Pin 2)
5 6 GND RS-232
Digital Ground
External Device Digital
Ground
(Usually Pin 5)
Backshell 8 Shield Cable Shield
Table 2: Serial 1: RS-232 Port - Connection Outputs
3.7.2. Serial 2: RS-485 Port
All connections for this port are on the communications connector (J6) and on the
DB9 connector (J1).
Note 1: The 1203 supports 4-wire full duplex RS-485 only (ie. 2-wire half-duplex
communications are not supported).
Note 2: Terminals 1 to 4 of the communications connector (J6) are connected
directly to pins 6 to 9 of the DB9 connector (J1) - (J6.1-J1.9, J6.2-J1.8, J6.3-J1.7,
J6.4-J1.6). This provides for quick and convenient connection of test or debug
systems.
J1 Pin No J6 Terminal No Function Description Connect To
7 3 RA(-) RS-485 Receive A (-) External Network
6 4 RB(+) RS-485 Receive B (+) External Network
9 1 TA(-) RS-485 Transmit A (-) External Network
8 2 TB(+) RS-485 Transmit B (+) External Network
Backshell 8 Shield Cable Shield
Table 3: Serial 2: RS-485 Port - Connection Outputs
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3.7.3. Multi-Drop Networking
The following table shows how to connect a number of instruments in an RS-485
4-wire multi-drop network:
Cable 1 Cable 2
Network
Master
1203 - Unit 1 1203 - Unit 1 1203 - Unit 2
Function Function Terminal
(J6)
Function Terminal
(J6)
Function Terminal
(J6)
RA(-) TA(-) 1 TA(-) 1 TA(-) 1
RB(+) TB(+) 2 TB(+) 2 TB(+) 2
TA(-) RA(-) 3 RA(-) 3 RA(-) 3
TB(+) RB(+) 4 RB(+) 4 RB(+) 4
Table 4: Multi-Drop Networking Connections
Note: For more than two units, duplicate Cable 2 between each new unit and the
network.
The end devices in a multi-drop RS-485 network may need to be provided with
termination resistors to balance the network loadings. These resistors are built into
the 1203 and they can be enabled or disabled using the digital setup. Refer to
BDR: Set Baud Rate page 32 for more information.
3.7.4. RS-232 Connection
*For more information on shielding refer to page 7.
Figure 7: RS-232 Connection (J1) & (J6)
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3.7.5. RS-485 Connection
*For more information on shielding refer to page 7.
Figure 8: RS-485 Connection (J1) & (J6)
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3.8. Input / Output: Setpoints
The 1203 has two setpoint outputs. The setpoints are configured using the LIV and
HYS commands. For Specifications refer to page 6.
The connections for these outputs are available on J10 as follows:
Terminal Function Connect To -
Open Collector
(Current Sink)
Connect To -
Open Emitter
(Current Source)
5 Output 1+ External Load 1- Power Supply +
6 Output 1- Power Supply - External Load 1+
7 Output 2+ External Load 2- Power Supply +
8 Output 2- Power Supply - External Load 2+
*For more information on shielding refer to page 7.
Figure 9: Input / Output - Setpoints (J10)
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3.9. Input / Output: Inputs
The 1203 has one digital input. This input is configured using the RBT command.
For Specifications refer to page 6.
The connections are available on J10 as follows:
Terminal Function Connect To -
Option 1
Connect To -
Option 2
1 Input + External Switch - Power Supply +
2 Input - Power Supply - External Switch +
*For more information on shielding refer to page 7.
Figure 10: Input / Output: Inputs (J10)
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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3.10. Analog Output
The analog output is connected using the analog out connector (J8). The 1203 has
one analog output. This output can be either voltage or current. It is configurable
within the limits of –10 to 10V or 0 to 24mA. The default is 0-10V or 4-20mA. The
output is configured using the ANL and ANM commands.
The connections are available on J8 as follows:
Terminal Function Connect To
1 Voltage + External Load +
2 Voltage - External Load 5 Current + External Load +
6 Current - External Load -
*For more information on shielding refer to page 7.
Figure 11: Analog Out Connections
3.11. Light Emitting Diode (LED)
The flashing green LED indicates the 1203 is On.
The green LED On but not flashing indicates that the 1203 is still starting or that
the 1203 is in viewer mode.
The flashing red LED indicates the 1203 is experiencing an error. The ESR
command is used to query the error status of the instrument. Refer to ESR: Query
Error Status page 36 for more information.
3.12. 1203 Viewer Software
The 1203 Viewer Software can be used in the setup of the instrument. The Viewer
Software is available by contacting Rinstrum or from the web site at
www.rinstrum.com.
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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4. Controls
The 1203 controls consist of a single button (SW1). The function of this button depends
on the 1203 software version:
• For versions 1.6 and below, this button resets the communications to the following
settings:
Control Setting
Baud 9600
Parity None
Data Bits 8
Stop Bits 1
• A short press of the SW1 button (50ms < t < 2s) sets the RS-232 port in network
mode and disables the RS-485 port.
• A long press of the SW1 button (t >= 2s) sets the RS-485 port in network mode
and disables the RS-232 port.
Note: These new settings will become permanent if a save is performed.
• For versions 1.7 and above, this button sets the 1203 in Viewer Mode. Viewer mode is
not permanent and another press of the button will exit this mode. While in viewer
mode, the 1203 communications are set to the following settings regardless of what is
configured:
Control Setting
Baud 9600
Parity None
Data Bits 8
Stop Bits 1
• A short press of the SW1 button (50ms < t < 2s) sets the RS-232 port in network
mode and disables the RS-485 port.
• A long press of the SW1 button (t >= 2s) sets the RS-485 port in network mode
and disables the RS-232 port.
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5. Digital Setup
5.1. Introduction
Digital setup of the 1203 can be carried out using the serial communications links or
by using the 1203/S Service Tool (Display/Keys). For more information on the
optional display refer to the 1203 Display Manual.
There is no password to secure setup and calibration via the serial communications
link.
5.2. Basic Weighing Terminology
The following terms are used throughout the setup procedure. Knowledge of these
basic weighing terms is beneficial in setting up and calibrating the 1203.
Note: Detailed descriptions of these and other terms used in this Reference
Manual are described in the Glossary of Terms page 53.
Term Definition
Units Units of measurement (kilograms, tonnes, pounds, etc.).
Capacity Maximum gross weight allowed on the scale.
Resolution or
Count-by
Smallest change in weight units that the display can show.
Graduations Maximum number of display steps between zero gross load and
full capacity gross load.
Division A single graduation.
Example
A 10,000kg 2.0mV/V load cell is used in an application with a 5000kg range,
displaying in 5kg divisions.
The values of each of the above terms are:
• Units = kg
• Capacity = 5000
• Count-by = 5
• Graduations = 1000
The Signal Voltages are:
• The capacity load cell signal is (5,000 / 10,000) x 2.0mV/V = 1.0mV/V.
• Since the 1203 uses 8V excitation, the absolute signal voltage is 8 x 1.0 =
8.0mV.
The Signal Resolution is therefore:
• 8.0 / 1000 = 0.008mV / division or 8µV / division.
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5.3. Direct mV/V Operation
If the output capacity of the load cell is known, the 1203 can be calibrated without
test weights. This is useful for applications where it is impractical to use test
weights (eg. silo weighing).
This mode of operation allows the following signal strengths to be entered directly:
• mV/V (at no load)
• mV/V (of the span)
This type of calibration is only as accurate as the load cell output figures. For many
applications this is more than adequate. Refer to Calibration page 20 for more
information.
5.4. Filtering Techniques
The 1203 has filtering options available which allow it to be optimised to produce
the most accurate readings possible in the shortest time. There is a trade-off
between noise filtering and the step-response time of the system. The filtering
options define the amount of time required to determine a final weight reading (not
the number of readings per second that are produced).
5.4.1. FIR Filter
The first level of filtering is the FIR filter. This is linked to the measurement rate.
The measurement rate is fixed at 100Hz. This filter is a very high performance
“tuned” filter that provides up to 180 dB of attenuation at multiples of the SYNC
frequency. It also provides broadband filtering of between approximately 40 and 80
dB.
5.4.2. Digital Averaging
The second level of filtering is the digital averaging. Digital averaging is
implemented as a fixed length sliding window average where the average of the last
“n” readings is calculated. As each new reading is taken the oldest reading is
discarded and a new average is calculated. The length of the window is set with the
ASF command using from 1 to 256 readings. Each reading in the average adds a
delay to the step-response equal to the measurement period.
Example
An average of 10 readings results in a total step-response of (10 + 3) * 10 = 130
milliseconds (where 3 samples is the fixed delay added by the FIR filter).
RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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6. Calibration
6.1. Introduction
The calibration of the 1203 is fully digital and can be carried out using the serial
communications links or by using the 1203/S Service Tool (Display/Keys). The
calibration results are stored in permanent memory for use each time the unit is
powered up.
The 1203 uses the following three digital calibrations simultaneously.
Calibration Changeable Details
Raw No This calibration is fixed.
mV/V No This calibration is fixed.
User Yes This calibration can be changed.
Performing a User Calibration is not a requirement
however, as the factory calibration is complete.
If a User Calibration is to be performed, the IAD,
ANL, ANM, LDW and LWT commands are used.
Refer to Commands page 26 for more information.
Note: It is important to perform the zero
calibration before the span calibration.
6.2. Digital Calibration with Test Weights
6.2.1. Digital Zero Calibration Routine
• Remove all weight from the scale structure.
• Send the LDW command to the instrument. To get very accurate data, the
instrument increases the averaging for this step and will require 3 to 4 seconds
to complete. While calibrating, the response to any command will be 1. For
example, LDW? will return 1 while calibrating followed by x (where x is the
zero value in mV/V), when calibration is completed.
• When the calibration is complete send the TDD1 command to save the
calibration to EEPROM.
6.2.2. Digital Span Calibration Routine
• Add the calibration test mass to the scale. A small weight (eg. <5% load cell
capacity) may limit calibration accuracy. The closer the test weight is to full
user range, the better the accuracy.
• Use the IAD command to setup scale build information.
• Send the LWT command with the test weight in user value without decimal
points. For example, send LWT1000 for a calibration of 300kg (capacity) in
0.1kg graduations (3000 graduations total) and a test weight of 100kg. To get
very accurate data, the instrument increases the averaging for this step and
will require 3 to 4 seconds to complete. While calibrating, the response to any
command will be 1. For example, LDW? will return 1 while calibrating followed
by x (where x is the zero value in mV/V), when calibration is completed.
• When the calibration is complete send the TDD1 command to save the
calibration to EEPROM.
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6.3. Digital Direct mV/V Calibration
6.3.1. Digital Zero Calibration Routine
• Remove all weight from the scale structure.
• Use the LDW command to specify the zero value. Refer LDW: Calibrate
Zero Dead Weight page 41 for more information.
• When the calibration is complete send the TDD1 command to save the
calibration to EEPROM.
6.3.2. Digital Span Calibration Routine
• Use the IAD command to setup scale build information.
• Send the LWT command with the test weight in user value without decimal
points and the corresponding signal value. Refer to LWT: Calibrate Span
page 43 for more information.
• When the calibration is complete send the TDD1 command to save the
calibration to EEPROM.
6.4. Analog Output Calibration
Analog outputs are, by default, in current mode. The readings will be as follows:
• 0mV/V: 4mA
• 3mV/V: 20mA
These points can be altered via a calibration procedure using the ANL command.
Refer to ANL: Set Analog Out page 29 for more information.
6.4.1. Analog Calibration Routine
• Choose the data type (current or voltage) and choose the data source for
the output. Refer to ANL: Set Analog Out page 29 for more information.
• Calculate the zero and span values. The zero and span values are set in
the data type chosen in the previous step. The zero value is the value (in
the chosen data source units) at 4mA or 0V output. The span value is the
value (in the chosen data source units) at 20mA or 10V output.
• Write the type, data source, zero and span values using the ANL
command.
• If necessary, use the ANM command to limit the output current or voltage
to a part of the possible range.
• When the calibration is complete send the TDD1 command to save the
calibration to EEPROM.
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7. Serial Outputs
7.1. Introduction
The 1203 provides serial output options allowing communications with external
devices such as computers, PLCs or remote displays.
The following serial outputs are available:
• Serial Port 1 is bi-directional RS-232 and can be set for driving automatic weight
output, or networking.
• Serial Port 2 is bi-directional RS-485 and can be set for driving automatic weight
output, or networking.
These options are set using the SER command. The baud rate and bit pattern of
the serial data can also be set using the BDR command.
Computer communications can be configured for simple automatic “streamed”
output through to multi-drop networked systems. The 1203 is programmed and
calibrated via the network.
7.2. Automatic Weight Output
The automatic weight output is normally used to drive a dedicated computer, remote
displays or PLC communications. The output generates a simple weight message
at intervals programmed in the digital setup.
The SER command is used to enable automatic output.
7.3. Networking the 1203
The standard 1203 protocol supports networking. The network language allows for
full control over all functions of the instrument. Refer to Commands page 26 for
more information.
7.3.1. RS-485 Termination Resistors
The termination resistors required by RS-485 networks are built into the 1203. The
resistors are used to terminate the ends of the network to provide a balanced
loading.
The termination resistors in the 1203 are enabled using the BDR command.
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8. Extended Functions
8.1. Setpoints
8.1.1. Introduction
The 1203 is fitted with two built-in setpoints with output drivers.
Each of the setpoints provides a simple comparator function that can be modified
using the LIV, HYS and FCN commands. Target weight, switching direction,
hysteresis and logic can be configured. Outputs can be forced ON or OFF using
the FCN command (or the external input).
8.1.2. Status Indication
The status of the setpoints is displayed using LEDs near the connectors.
8.1.3. Connection
Refer to Installation page 7.
8.1.4. Operation
The following figure illustrates the operation of active weight setpoints.
Figure 12: Setpoints Operation (Over vs Under)
Note the difference between Over and Under directions.
• If the Logic is set to High, the output is turned on at point A and off again at
point B.
• If the Logic is set to Low, the output is turned off at point A and on again at
point B.
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8.1.5. Example 1: Control Level of Product in 2000kg Tank
Settings
Direction Logic Source Target Hysteresis Weight Initially
Over Low Gross 2000kg 200kg 0kg Gross
Operation
The output will initially switch ON at 0kg. The weight in the tank will increase to the
target point of 2000kg at which point the output will switch OFF. As product is
removed from the tank the weight will drop until it falls below 1800kg (ie. target point
- hysteresis). The output will then switch ON again.
Note: If the tank was gravity fed, the logic could be changed to High and the output
would then be initially OFF at 0kg. It would switch ON at a weight over 2000kg and
switch OFF again as the weight fell below 1800kg.
8.1.6. Example 2: Control Weighing of Product Out of Silo into 100kg Drums
Settings
Direction Logic Source Target Hysteresis Weight Initially
Under Low Net –100kg 1kg 0kg Net
Operation
Pressing the TARE key will switch the output ON. This is because 0kg net is higher
than the –100kg net target point. The product will leave the silo until the –100kg
target point is reached at which point the output will switch OFF. The output will not
switch ON again until the net weight is higher than –99kg (ie. target point +
hysteresis).
8.2. Remote Input
The 1203 has one remote input that can be configured to perform a variety of
operations. Refer to RBT: Remote Button Settings page 45 for more information.
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9. Options
9.1. Display/Keys
The capabilities of the 1203 can be expanded by the installation of an optional 1203
display card. The 1203 Display Manual provides full details on 1203/S Service
Tool (Display/ Keys) option.
9.1.1. Installation
The following warnings should be noted prior to installing the 1203 display card.
• Isolate the 1203 from the power before attempting installation.
• Avoid excess handling of the card as each card contains static sensitive
devices.
• Hold the card by the edges wherever possible.
• The card must be connected to J3 and latched in place using the supplied
stand-offs.
9.1.2. Setup and Calibration
The display card can be used to access all setup and calibration functions.
.
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10. Commands
10.1. Overview
10.1.1. Commands and Queries
• A Command consists of three ASCII characters (eg. IDN).
• A Query consists of four ASCII characters (the last character being a question
mark) (eg. IDN?).
Before a command or query can be sent, the unit, which should execute that
command, must be selected. Refer to Sxx: Select Unit page 50 for more
information.
10.1.2. Responses
The 1203 will return one of the following responses:
Response Description
0 Indicates that a command has been accepted.
1 When calibrating.
? Indicates that the command was either not understood or could not
be performed.
Specific queries cause the 1203 to respond with the data requested by the query.
For example, if the 1203 was setup with address 4 it would respond with 04 to the
ADR? query.
10.1.3. Parameters
The following rules apply to parameters:
• A command or query can be followed by one or more parameters.
• Parameters are either numeric (eg. 3000) or strings (eg. "Fred").
• String parameters are delimited by quote characters ( " ASCII 34). They are
taken literally (ie. "AbCd" is not the same as "abcd").
• Numeric parameters are variable and leading and trailing spaces are ignored
(ie. 003, 03 and 3 are identical).
• Parameters are separated by the comma character ( , ASCII 44).
• Most parameters may be left out completely. This makes it possible to change
one parameter without altering the others. For example IAD,, "kg" would
change only the units of measurement.
10.1.4. Termination
Termination characters are sent to define the end of a command, query or
response. The following are permissible termination characters:
Termination Character ASCII Code(s)
; 59
LF 10
CRLF 13 10
LFCR 10 13
For example, ADR?; is the same as ADR? CRLF.
Note: The 1203 invariably uses CRLF as the termination of its responses.
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10.2. Command Details
10.2.1. ACL: Set Automatic Temperature Calibration On/Off
This is used to set the Automatic Temperature Calibration On/Off.
General Details
No. of Parameters Save Changes Changes Used
1 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 On/Off 0 to 1 (0: Off, 1: On) 1 No
The 1203 performs an automatic temperature calibration to ensure that changes in
ambient temperature do not affect accuracy. This calibration takes about 0.06
seconds. During this calibration no new data is received. If this sample loss
creates an obstacle, the automatic temperature calibration can be switched off.
Temperature calibrations can then be initiated manually using the FCN command
(eg. when there is a lull of activity on the scale).
The maximum time between calibrations depends on the ambient temperature
gradients and the required accuracy. For most applications, temperature calibration
every 5 to 10 minutes is sufficient. Note: More frequent calibrations are required
during the first 20 minutes after power-up.
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10.2.2. ADR: Set Address
This is used to set the address of a unit.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Address 0 to 31 31 No
2 Serial Number 7 Chars Factory Set No - Command Only
Each 1203 must be assigned a unique address to enable the implementation of a
multi-drop network. The ADR command is used to assign the unit address via the
communications network.
The following procedure can be used if a 1203 (with a known serial number) and an
unknown (or not unique) address is attached to a multi-drop network:
• Select all units using the S99 command.
• Send the ADR command with the new address and the serial number of the
chosen unit. The ADR command will execute only for the unit with the correct
serial number. Note: The serial number parameter is used exclusively for
this task.
• Continue until all units have unique addresses.
If the serial number is not known, the units must be turned on one at a time. The
combination of the S99 and ADR commands can be used to set the addresses.
Example 1: Change Address of Unit from 1 to 2
Command Response Details
S01; Select Unit 1
ADR2; 0 CRLF Set Address to 2
TDD1; 0 CRLF Save Change
S02; Select New Unit 2
IDN?; Rinstrum,"Site X",^^123456,1203,V1.0 CRLF Ask for ID
Example 2: Two Units (Unknown Addresses) Configured Using Serial
Numbers
Command Response Details
S99; Select All Units
ADR01, "123456"; 0 CRLF Unit With Serial No. "123456" Gets
Address 01
ADR02, "123457"; 0 CRLF Unit With Serial No. "123457" Gets
Address 02
TDD1; 0 CRLF Save Address Against Power Loss
S01; Select New Unit 1
IDN?; Rinstrum,"Site
X",^^123456,1203,V1.0
CRLF
Ask for ID
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10.2.3. ANL: Set Analog Output
This is used to set the analog output characteristics.
General Details
No. of Parameters Save Changes Changes Used
4 With TDD1 On TDD1 - except "Source" which is used
immediately
Parameter Details
Parameter Description Range Default Required
1 Type 0 to 1
(0: Current Output
1: Voltage Output)
0 No
2 Source 0 to 23
Refer to COF Data Types
page 33 for more
information.
6 No
3 Source Value
at 4mA or 0V
Signed number (decimal)
with no decimal points.
Note: User values should
be input in graduations.
0 No
4 Source Value
at 20mA or
10V
Signed number (decimal)
with no decimal points.
Note: User values should
be input in graduations.
30000 No
Other Standards
The analog outputs can use standards other than 4 to 20mA or –10 to10V.
Parameters 3 and 4 must be calculated such that the desired performance is
obtained.
For Example: Therefore:
Output Required: 1 to 5V Source Value at 0V = –2500
Source: User Gross Source Value at 10V = 22500
Source Capacity: 10000
Example
Command Response Details
S01; Select Unit 1
ANL0,7,0,30000; 0 CRLF Set analog output to type:
current, source: mV/V gross,
Where:
4mA = 0mV/V
20mA = 3mV/V
TDD1; 0 CRLF Save New Settings
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10.2.4. ANM: Set Analog Output Maximum and Minimum
This is used to set the analog output clipping limits.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 On TDD1
Parameter Details
Parameter Description Range Default Required
1 Minimum Limit: Percentage
of span from 0V or 4mA
–127 to 127 –127 No
2 Maximum Limit: Percentage
of span from 0V or 4mA
–127 to 127 127 No
The ANM command defines limits for the analog output. It is expressed as a
percentage of the nominal output span (10V or 16mA) from nominal output zero (0V
or 4mA).
Note: This feature clips the outputs (ie. it will not alter the calibration defined using
the ANL command).
Standard Minimum Limit Maximum Limit
Default –127 (limited by hardware) 127 (limited by hardware)
–10 to 10V –100 100
0 to 10V 0 100
1 to 10V 10 100
2 to 10V 20 100
0 to 5V 0 50
1 to 5V 10 50
4 to 20mA 0 100
0 to 20mA –127 (limited by hardware) 100
0 to 24mA –127 (limited by hardware) 127 (limited by hardware)
Table 5: ANM: Table of Limit Percentages for Common Standards
For non-standard values, the following formulae can be used to calculate the limits:
Voltage_Percentage = 10 * Voltage Limit
Example
Command Response Details
S01; Select Unit 1
ANL0,7,0,30000; 0 CRLF Set analog output to type:
current, source: mV/V gross,
Where:
4mA = 0mV/V
20mA = 3mV/V
ANM0,100; 0 CRLF Limit the output to 4mA minimum and
20mA maximum.
TDD1; 0 CRLF Save New Settings
Current_Percentage = 100
(Current_Limit) - 4
16
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10.2.5. ASF: Set Filtering
This is used to set the filtering, motion detection and zero tracking characteristics of
a unit.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 On TDD1
Parameter Details
Parameter Description Range Default Required
1 Filter 0
1
2
3
4
1
2
4
8
16
5
6
7
8
32
64
128
256
3 No
2 Motion 0
1
2
3
4
5
Off
0.4u in 1s
0.8u in 1s
1.6u in 1s
3.1u in 1s
6.3u in 1s
6
7
8
9
10
11
12.5u in 1s
25u in 1s
50.0u in 1s
100u in 1s
200u in 1s
400u in 1s
7 No
Where: u = User Graduations
The filter is a sliding window, unweighted average. It can be set from 1 (10ms) to
256 (2.5s) samples. The step-response corresponds directly to this setting.
Step-Response = ((Number of Samples) + 3) * 0.01 [Seconds]
The motion detection detects reading motion faster than a threshold value. For
example, for setting 1, movement of more than 0.4 user graduations in 1 second will
be detected as motion.
Example
Command Response Details
S01; Select Unit 1
ASF?; 03,01,00 CRLF Query Filtering Setting
ASF4,2; 0 CRLF Changed to a 16 reading average with
0.8u in 1s motion setting
TDD1; 0 CRLF Save New Settings
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10.2.6. BDR: Set Baud Rate
This is used to set the communication parameters, baud rate, parity, etc.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 On TDD1
Parameter Details
Parameter Description Range Default Required
1 Baud Rate 0
1
2
3
4
1200
2400
4800
9600
19200
3 No
2 Option Option = Term + Data +
Par + Stop
Where:
Term: RS-485 Terminating
Resistors (128:On,
0:Off)
Data: Data Bits
(0: 8 bits, 64: 7 bits)
Par: Parity
(0: none, 16: Even, 48:
Odd)
Stop: Stop Bits
(0: 1 bit, 8: 2 bits)
128
No
Example
Change baud rate settings of unit 1.
Command Response Details
S01; Select Unit 1
BDR?; 03,128 CRLF Query Baud Rate Setting
BDR1,240; 0 CRLF
Note: New Settings are not
used until saved.
Settings changed to 2400 baud,
Termination On, 7 Data Bits, Odd
Parity and 1 Stop Bit.
TDD1; 0 CRLF
Note: Reply is sent using the
old settings.
Save New Settings
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10.2.7. COF: Set Output Format
This is used to set the default output format and reading of the MSV? query. It also
sets the format and repetition rate for the automatic serial outputs.
General Details
No. of Parameters Save Changes Changes Used
3 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Default format for
MSV response
0 to 7 5 No
2 Default data type
for MSV
response
0 to 24
Refer to COF Data Types
below for more
information.
6 No
3 Time between
automatic output
(x 10ms)
2 to 255 10 No
4 Format for auto
output
0 to 7 6 No
COF Data Types
Option Reading Type
Option Reading Type
0
Raw Absolute
13
Grads Gross
1
Raw Gross
14
Grads Net
2
Raw Net
15
Grads Maximum
3
Raw Maximum
16
Grads Minimum
4
Raw Minimum
17
Grads Peak
5
Raw Peak
18
User Absolute
6
mV/V Absolute
19
User Gross
7
mV/V Gross
20
User Net
8
mV/V Net
21
User Maximum
9
mV/V Maximum
22
User Minimum
10
mV/V Minimum
23
User Peak
11
mV/V Peak
24
Analog
12
Grads Absolute
Note 1: Raw Readings are 24bit Raw ADC Values
Note 2: mV/V Readings = mV/V x 10000
Note 3: Grads Reading = User Graduations
Note 4: User Readings = Weight According to User Calibration
Note 5: Analog = 0 to 10000 (Zero to Zero + Span)
Table 6: COF: Data Types
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COF Formats
Binary Formats
Format Data Order
0 4 Byte (binary) CRLF MSB before LSB(=status)
Refer to Status A Definition page 35.
1 2 Byte (binary) CRLF MSB, LSB
Note 1: The binary formats are useful for PLC communications in applications
where conversion of the ASCII weight string is not possible. The binary
outputs can generally be used directly by the PLC.
Note 2: Binary outputs require serial setting with 8 data bits.
ASCII Formats
In these ASCII tables the following applies:
• Value format is the sign (space or minus), followed by 7 digits (0 to 9) including
the decimal point (if used). Leading zero blanking applies.
• Values in square brackets [ ] signify the number of characters in the fixed length
response (ie. parameter length in bytes).
Parameters
Format 1 2 3 4 5 End
2 Value without
decimal point
[8]
CRLF
3 Value without
decimal point [8]
‘,’ [1]
Address [2]
‘,’ [1]
Status A [3]
See Note 2
CRLF
4 Value with
decimal point [8]
CRLF
5 Value with
decimal point [8]
‘,’ [1]
Address [2]
‘,’ [1]
Status A [3]
See Note 2
CRLF
Note 1: Only mV/V readings and user readings have a decimal point. For other data types,
format 4 = format 1 and format 5 = format 3.
Note 2: Status A = Refer to Status A Definition page 35.
Note 3: Address will be two digits in the range of 00 to 31.
Parameters
Format Start 1 2 3 4 5 6 End
6
(Rinstrum
A)
STX Value with
decimal
point [8]
Status B
[1] See
Note 1
ETX
7
(Rinstrum
C)
STX Value with
decimal
point [8]
Status
C1 [1]
See Note
2
Status
C2 [1]
See
Note 3
Status
C3 [1]
See
Note 4
‘-’
[1]
Units
[3]
ETX
Note 1: Status B choices are Gross, Net, Abs, Peak, Underload, Overload, Motion, Error.
Note 2: Status C1 choices are Gross, Net, Abs, Peak, Underload, Overload, Error.
Note 3: Status C2 choice is Motion or space.
Note 4: Status C3 choice is Centre of Zero or space.
Note 5: Units is a three character string, the first character(s) being a space, followed by
the actual units (eg. “^kg” or “^^t”).
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Status A Definition
Decimal
Value
Bit No. Description Comment
001 0 Overload / Underload Weight reading out of range
overload or underload
002 1 No Motion
004
008
2
3
00H: Net
04H: Gross
08H: Abs
0CH: Peak
016 4 Setpoint 1 Active
032 5 Setpoint 2 Active
064 6 User Reading
128 7 Used Internally
256 8 Centre of Zero
Binary Note: Bit 8 is not applicable to Binary Format 0.
Note: The status bits are added together. For example, a status of 6 (4+2) means
the weight reading is gross, not within centre of zero, there is no motion and all limit
values are inactive.
Example 1: General Use
Command Response Details
S01; Select Unit 1
COF?; 04,19,10,06 CRLF Query Format
MSV?; -^^^12.3 CRLF Query Weight Reading
COF5; 0 CRLF Change to Format 5
TDD1; 0 CRLF Save New Setting
MSV?; -^^^12.3,01,006 CRLF Query weight reading using the new
format
Example 2: Use of Binary Format for PLC Use
Command Response Details
Initialisation
S01; Select Unit 1
COF0; 0 CRLF Set Format 0
TDD1; 0 CRLF Save Format Setting
PLC Operation
MSV?; Query weight reading using the new format. In
this example the weight is a stable gross reading
of 1000kg.
COF 8 replies with:
<24 bits of weight><8 bit status> CRLF
The hexadecimal values of the returned data are
<00><03><E8><06><0C><0A> but this data is
not printable directly.
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10.2.8. ESR: Query Error Status
This is used to query the error status of the instrument.
General Details
No. of Parameters Save Changes Changes Used
1 - -
Parameter Details
Parameter Description Range Default Required
1 Select Type of
Status Information 0 1
Normal
Latched
0 No
The 1203 contains both current and latched error status flags. The latched errors
are only cleared by resetting the unit (ie. using the RES command or powering off).
The response string is four hexadecimal characters representing the 16 error bits.
Error Codes
Error Description Action
0001
Power Supply Voltage Low Check Supply
0002
Power Supply Voltage High Check Supply
0010
Temperature Out of Range Check Location
0020
User Calibration Resolution Error Fix Up User Calibration or Scale Build
0040
Positive Sense Error Check Connection
0080
Negative Sense Error Check Connection
0100
Setup Information Lost Re-Enter Setup
0200
Calibration Information Lost Re-Calibrate
0400
Factory Information Lost (FATAL) Service
0800
EEPROM Error (FATAL) Service
1000
A/D Converter Error Restart/Service
2000
A/D Converter Range Error Check Connection and Load Cell
Output
4000
Communication Bit Error Check Configuration/ Cabling
8000
ROM Error (FATAL) Service
Table 7: ESR: Error Codes
The status bits are additive. For example, if the load cell cable is disconnected and
therefore neither sense line is connected, the resulting status setting will be 00C0
(0040 + 0080). The numbers add in hexadecimal as follows:
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - A - B - C - D - E - F
(For example, 2 + 4 = 6 or 4 + 8 = C)
Example
Command Response Details
S01; Select Unit 1
ESR?; 0000 CRLF No Current Errors
ESR?1; 0030 CRLF Positive and Negative Sense lines were not
connected at some time in the past.
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10.2.9. FCN: Execute A Function
This simulates pressing an external button using the remote input.
General Details
No. of Parameters Save Changes Changes Used
2 Automatically
(Zero and Tare Only)
Immediately
Parameter Details
Parameter Description Range Default Required
1 Function 1 to 15
Refer to RBT Key
Functions page 46 for
more information.
Yes
1 Wait for No Motion
(Zero and Tare Only) 0 1
No Wait
Wait
0 No
Note 1: Function execution is performed immediately.
Note 2: Zero and Tare only:
• If immediate execution is not possible because of motion and the wait-formotion setting is 1, the termination 2 is returned.
• If immediate execution is not possible because of motion and the wait-formotion setting is 0, the termination ? is returned.
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10.2.10. HYS: Set Hysteresis
This is used to set the setpoint hysteresis.
General Details
No. of Parameters Save Changes Changes Used
1 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Hysteresis Signed number (decimal)
with no decimal points
1 No
The same hysteresis figure is used for both setpoint outputs. The units of this field
are the same as the setpoint source (set in the LIV command).
Example
Command Response Details
S01; Select Unit 1
HYS5; 0 CRLF Set Hysteresis to 5
TDD1; 0 CRLF Save Setting
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10.2.11. IAD: Set Scale Build
This is used to set the scale build parameters.
General Details
No. of Parameters Save Changes Changes Used
4 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Number of right side
digits. (decimal point
position)
0 to 5 3 No
2 Resolution 1 to 100 1 No
3 Units String 2 Characters "" No
4 Capacity Unsigned number
(decimal) with no
decimal points
3000 No
Example
Command Response Details
S01; Select Unit 1
IAD?; 00,05,"kg",^^^^3000 CRLF Query current scale build
parameters
IAD1; 0 CRLF 1 Digit after Decimal Point
TDD1; 0 CRLF Save Setting
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10.2.12. IDN: Set Identification
This is used to set the unit identification string.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 Immediately
Command Parameter Details
Parameter Description Range Default Required
1 Identification String 15 Characters "" No
Query Parameter Details
Parameter Description Range Default Required
1 Manufacturer Rinstrum 2 Identification String 15 Characters "" 3 Serial Number String 0000000 to
999999
(Serial
Number)
-
4 Model Number 1203 5 Version String (Version) -
Note: Only the identification string may be changed. Other parameters are fixed at
the factory and are available for information only by using the IDN? query.
Example
Command Response Details
S01; Select Unit 1
IDN?; Rinstrum,"Silo A",^1234567,1203,V1.0 CRLF Query Current
Identification
IDN"Silo X"; 0 CRLF Change
Identification String
to "Silo X”
TDD1; 0 CRLF Save Setting
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10.2.13. LDW: Calibrate Zero Dead Weight
This command is used to calibrate the zero dead weight. It is possible to calibrate
the zero dead weight by either having no load on the scale base or by entering the
calculated signal directly.
General Details
No. of Parameters Save Changes Changes Used
1 Automatically Immediately
Parameter Details
Parameter Description Range Default Required
1 Signal Value of
zero (in mV/V x
10000)
Signed number
(decimal) with no
decimal points
No
The parameter is used to specify a calculated zero. If no parameter is specified,
the LDW command will use the current scale output for zero calibration.
The LDW query returns the zero value in mV/V.
• Calibration with Weight
Due to increased averaging, this calibration process takes approximately four
seconds to complete. As a result it is necessary to monitor the calibration process
to determine when it is finished. While calibrating, all commands and queries are
answered with 1.
Example
Command Response Details
S01; Select Unit 1
LDW; 0 CRLF Start Zero Calibration
LDW?; 1 CRLF Query Status of Zero Calibration Process
LDW?; 1 CRLF Still Busy
LDW?; ^^^12456 CRLF Zero Calibration Finished (Raw Zero Value)
TDD1; 0 CRLF Save Setting
• Direct Calibration
By using the parameter, a zero value can be set.
Example
Command Response Details
S01; Select Unit 1
COF2,6; 0 CRLF Select Correct Format and Data Type
MSV?; 5076 CRLF Current Absolute Reading is 0.5076mV/V
LDW5076; 0 CRLF Set Zero Dead Load to 0.5076mV/V
LDW?; ^^^^5076 CRLF Zero Dead Load is 0.5076mV/V
TDD1; 0 CRLF Save Setting
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10.2.14. LIV: Set Limit Value
This is used to set parameters for the two setpoints.
General Details
No. of Parameters Save Changes Changes Used
4 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Setpoint
Number
0 to 1 Yes
2 Source Data
Type
0 to 24
Refer to COF Data Types
page 33 for more
information.
6 No
3 Target Signed number (decimal)
with no decimal points
0 No
4 Direction/
Logic
0 to 3
= Direction + Logic
Direction Under = 0
Direction Over = 1
Logic Low = 0
Logic High = 2
0 No
Example
Command Response Details
S01; Select Unit 1
LIV?1; 01,07,^^^^1245,03 CRLF Query Setpoint 1 Parameters
LIV1,8,1000,1; 0 CRLF Change to:
Type = mV/V net
Target = 1000
Direction = Over
Logic = High
TDD1; 0 CRLF Save Setting
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10.2.15. LWT: Calibrate Span
This is used to calibrate the span. It is possible to calibrate the span by either
having no load on the scale base or by entering the calculated signal directly.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 User reading (if not
specified, capacity is
used)
Signed number
(decimal) with no
decimal points
Capacity No
2 Signal Value of span
(in mV/V x 10000)
ie. Signal at span signal at zero
Signed number
(decimal) with no
decimal points
No
Parameters 1 and 2 are used to specify a calculated span. If parameter 2 is not
specified, the LWT command will use the current scale output for span calibration.
The LWT? query returns the span calibration.
• Calibration with Weight
Due to increased averaging, this calibration process takes approximately four
seconds to complete. As a result it is necessary to monitor the calibration process
to determine when it is finished. While calibrating, all commands and queries are
answered with 1.
Example
Command Response Details
S01; Select Unit 1
LWT2400; 0 CRLF Start span calibration with load of 2400
(user units).
LWT?; 1 CRLF Query status of Span Calibration
Process
LWT?; 1 CRLF Still Busy
LW T?; ^^^^2400,^^^12456 CRLF Span Calibration Finished
TDD1; 0 CRLF Save Setting
• Direct Calibration
By using parameters 1 and 2 a calculated span can be set.
Example
Command Response Details
S01; Select Unit 1
LWT2400,12500; 0 CRLF Set Span to 1.25mV/V at 2400
User
LW T?; ^^^^2400,^^^12500 CRLF Span is 1.25mV/V at 2400 User
TDD1; 0 CRLF Save Setting
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10.2.16. MSV?: Query Measured Weight Value
This is used to query weight readings.
General Details
No. of Parameters Save Changes Changes Used
4 - -
Parameter Details
Parameter Description Range Default Required
1 No. of
Consecutive
Readings
0 to 60000
(0 means continuous
output)
1 No
2 Port
Number
0 to 1
(0: RS-232, 1:RS-485)
Network
Port
No
3 Data Type Refer to COF Data
Types page 33
COF setting No
4 Format Refer to COF Formats
page 34
COF setting No
Example
Command Response Details
S01; Select Unit 1
COF2,7; 0 CRLF Set Gross mV/V in Output Format 2
MSV?; ^^^^2000 CRLF Query Displayed Weight
MSV?5; ^^^^2000 CRLF
^^^^2005 CRLF
^^^^2009 CRLF
^^^^2011 CRLF
^^^^2011 CRLF
Query the next five consecutive gross weight
readings
MSV?0; ^^^^2011 CRLF
^^^^2011 CRLF
^^^^2012 CRLF
…
Enable Continuous Output
STP; Stop Continuous Output
To stop continuous output send the STP command. The format, type and
frequency of data returned from the MSV? query is controlled by the COF setting.
Refer to COF Data Types page 33 for more information.
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10.2.17. RBT: Remote Button Settings
This is used to setup the function of the remote input. Use the FCN command to
force the execution of one of these functions using the communications.
General Details
No. of Parameters Save Changes Changes Used
2 With TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Key
Operation
0 to 3
Refer to RBT Key Operation
below for more information.
Yes
2 Functions 0 to 15
Refer to RBT Key Functions
below for more information.
0 No
RBT Key Operation
Option Operation Description
0 Short Press This function is executed when the key is released after
being held down for time “t” where (50ms<=t<2s).
1 Long Press This function is executed after the key has been held
down for 2 seconds.
2 Button Down This function is executed after the key has been held
down for 50ms seconds.
3 Button Up This function is executed when the key is released after
being held down for at least 50ms seconds.
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RBT Key Functions
Option Key Function Description
0 None No Operation
1 Comms Reset
RS-232
Reset the comms to 9600n81 with RS-485
disabled and RS-232 in network mode.
Note: Identical to a short press of the comms
reset button.
2 Comms Reset
RS-485
Reset the comms to 9600n81 with RS-232
disabled and RS-485 in network mode.
Note: Identical to a long press of the comms
reset button.
3 Zero the Scale Set Gross Weight to Zero
4 Tare the Scale Set Net Weight to Zero
5 Reset Peak Values Reset Stored Peak Values
6 Setpoint A ON Force Setpoint 1 ON
7 Setpoint A OFF Force Setpoint 1 OFF
8 Setpoint A Toggle Force Setpoint 1 to Opposite State
9 Setpoint A Release Release Setpoint 1 to Normal Operation
10 Setpoint B ON Force Setpoint 2 ON
11 Setpoint B OFF Force Setpoint 2 OFF
12 Setpoint B Toggle Force Setpoint 2 to Opposite State
13 Setpoint B Release Release Setpoint 2 to Normal Operation
14 Trans1Key
Same as MSV? query
15 Temperature
Calibration
Perform a temperature calibration. This is most
useful when automatic temperature calibrations
are disabled using the ACL command.
Example 1: Force Setpoint A ON While Button Held (eg. manual fill
adjustment)
Command Response Details
S01; Select Unit 1
RBT2,6; 0 CRLF Set to force setpoint A ON when button is down.
RBT3,9; 0 CRLF Set to release setpoint A when button is up.
TDD1; 0 CRLF Save Setting
Example 2: Tare / Zero Button
Command Response Details
S01; Select Unit 1
RBT0,4; 0 CRLF Tare on Short Press
RBT1,3; 0 CRLF Zero on Long Press
TDD1; 0 CRLF Save Setting
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10.2.18. RES: Reset
This is used to simulate a power-on reset.
General Details
No. of Parameters Save Changes Changes Used
0 - -
Example
Command Response Details
S01; Select Unit 1
RES; Reset Unit
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10.2.19. SER: Set Serial Communications Settings
This is used to set the serial mode settings for each serial port.
General Details
No. of Parameters Save Changes Changes Used
3 TDD1 Immediately
Parameter Details
Parameter Description Range Default Required
1 Port Number 0 to 1
(0: RS-232, 1:RS-485)
2 Mode 0
1
2
Disabled
Network Mode
Automatic Transmit
1 No
3 Data Source
(mode 2 only)
0 to 24
Refer to COF Data Types
page 33 for more
information.
6 No
Automatic transmit will use the data source specified in parameter 3 and the format
and frequency specified by the COF command.
Example
Command Response Details
S01; Select Unit 1
COF3,,10; 0 CRLF Set Format to Type 3 and Frequency to 10Hz
SER0,2,7; 0 CRLF Set RS-232 in Automatic Output Mode Sending
Gross mV/V readings.
TDD1; 0 CRLF Save Setting
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10.2.20. STP: Stop Continuous Transfer
This is used to stop continuous weight transmission started by MSV?0.
General Details
No. of Parameters Save Changes Changes Used
0 - -
Example
Command Response Details
S01; Select Unit 1
MSV?0; ^^^^2345 CRLF
^^^^2346 CRLF
^^^^2347 CRLF
…
Start Continuous Data Transmission
STP; Stop Continuous Data Transmission
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10.2.21. Sxx: Select Unit
This is used to select one or more units with which to communicate.
General Details
No. of Parameters Save Changes Changes Used
Special Case - -
xx Range Options
xx Range Operation Use
00 to 31 Select a single unit with the matching
address 00 to 31. All other units are
de-selected.
Communication with single
unit.
32 to 63 All units execute commands. Only the
unit with matching address (subtract
32) responds.
Network blanket command
with reply.
64 to 95 Select unit with matching address
(subtract 64) but it will not respond.
No units are de-selected.
Generate groups of units to
execute commands.
96 De-select all units.
97 to 98 All units will execute commands but
none will respond.
Network blanket command
without reply.
99 All units are selected and will respond.
Reply contention problems if more
than one unit is on the network.
Only a single unit (possibly
of unknown address) is
present on the network.
Example
Command Response Details
S01; Select Unit 1
MSV?; ^^^400.0 CRLF Query Current Weight
S02; Select Unit 2
MSV?; ^^^623.5 CRLF Query Current Weight
S96; De-Select All Units
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10.2.22. TAR: Tare
This is used to perform a preset tare or a measured tare.
Note: Use the FCN command to wait for no motion before performing a measured
tare.
General Details
No. of Parameters Save Changes Changes Used
2 Automatically Immediately
Parameter Details
Parameter Description Range Default Required
1 Data Type for
Tare Reading
0 to 3
Refer to Data Type for
Tare Reading below.
0 No
2 Tare Reading Signed number (decimal)
with no decimal points
No
When no preset tare is specified, (with one exception) this command is exactly the
same as pressing a remote input TARE key or taring using the FCN command. The
exception is that TAR does not wait for motion to cease (no motion) before taring.
Data Type for Tare Reading
Option Type
0 Raw
1 mV/V
2 Grads
3 User
Example
Command Response Details
S01; Select Unit 1
MSV?,,20; ^^^400.0 CRLF Query Net Weight
TAR; 0 CRLF Tare
MSV?,,20; ^^^^^0.0 CRLF Query Net Weight
MSV?,,19; ^^^400.0 CRLF Query Gross Weight
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10.2.23. TDD: Load/Save Setup
This is used to save or restore instrument settings.
General Details
No. of Parameters Save Changes Changes Used
1 - -
Parameter Details
Parameter Description Range Required
1 Command 0
1
2
3
4
5
Reset EE to Default Values
Save Current EE Settings
Reload EE Settings
Reset NV Store to Default
Values
Write NV Store
Read NV Store
Yes
This command allows permanent storage to be manipulated. The NV store holds
information which is regularly changed, such as:
• Zero value
• Tare value
The NV storage is automatically saved when these values are changed. The EE
storage holds all other settings. The EE storage values are only stored permanently
when a TDD1 is received.
Example
Command Response Details
S01; Select Unit 1
COF1; 0 CRLF Change MSV Format
TDD1; 0 CRLF Save Settings
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11. Appendix
11.1. Glossary of Terms
Term Definition
Capacity The maximum gross weight allowed on the scale. This is used to detect
overload and underload conditions, etc.
Count-by The smallest change in weight units that the display can show. See also
Resolution.
Division A single graduation.
EE Storage Electrically Erasable Storage
EEPROM Electrically Erasable Programmable Read-Only Memory
EMC Electromagnetic Compatibility Regulation
Graduations The maximum number of display steps between zero gross load and full
capacity gross load. It is equal to the Capacity divided by the resolution.
LED Light Emitting Diode
LSB Least significant bit
MSB Most significant bit
NV Storage Non Volatile Storage
PLC Programmable Logic Controller
Resolution The smallest change in weight units that the display can show. See also
Count-by.
RFI Radio Frequency Interference
RS-232 and RS-485 Standards for communications hardware layers.
Step-Response The step-response is the time between placing a weight on the scale and
the correct weight reading being displayed.
SYNC Frequency The sampling frequency of the analog-to-digital converter. It is fixed at
100Hz on the 1203 and defines the FIR filter response.
Transients A temporary voltage oscillation or spike caused by a sudden change of
load (or other external influence).
Units The actual units of measurement (kilograms, tonnes, pounds, etc.).
Viewer Mode A temporary mode where the communications ports are always set to
9600 n81. This allows the viewer to be connected (at known baud and
bit settings) and all instrument settings to be configured (including the
actual communications settings) without changing the actual
communications setup. This mode is entered and exited using the
Comms Reset switch.
11.2. List of Figures and Tables
Figure 1: 1203 Weight Transmitter................5
Figure 2: Power Supply.................................7
Figure 3: Load Cell: 6-Wire Connections.......8
Figure 4: Load Cell: 4-Wire Connections.......9
Figure 5: Sample Installation Method - 1203
with Safety Barriers ...........................10
Figure 6: Comms Reset Switch (SW1)........10
Figure 7: RS-232 Connection (J1) & (J6) ....12
Figure 8: RS-485 Connection (J1) & (J6) ....13
Figure 9: Input / Output - Setpoints (J10) ....14
Figure 10: Input / Output: Inputs (J10) ........15
Figure 11: Analog Out Connections ............16
Figure 12: Setpoints Operation (Over vs
Under) ...............................................23
Table 1: 6-Wire Connections ........................8
Table 2: Serial 1: RS-232 Port - Connection
Outputs .............................................11
Table 3: Serial 2: RS-485 Port - Connection
Outputs .............................................11
Table 4: Multi-Drop Networking Connections12
Table 5: ANM: Table of Limit Percentages for
Common Standards ..........................30
Table 6: COF: Data Types..........................33
Table 7: ESR: Error Codes .........................36
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12. Index
4
4-Wire, 5, 9, 10, 11, 12
6
6-Wire, 6, 8
A
A/D Converter, 6
ACL Command, 27
ADR Command, 28
Analog Calibration
Routine, 21
Analog Input, 6
Analog Output, 6, 16,
21
ANL Command, 29
ANM Command, 30
ASCII, 26, 34
ASF Command, 31
Automatic Weight
Output, 22
Averaging, 6, 19
B
Backshell, 11
Basic Weighing
Terms, 18
Baud, 12, 17, 32
BDR Command, 32
Broad Band Filtering,
19
C
Calibration, 20
Capability, 6
Capacity, 18
COF Command, 33
Command (Individual
Details), 27
Command
Parameters, 26
Command Responses,
26
Command Termination
Characters, 26
Commands and
Queries, 26
Comms Reset Switch,
10
Communications, 6, 48
Configured Network
Port, 10
Control Button, 17
Copyright, 2
Count-by, 18
Current Requirements,
6
D
Data Bits, 17, 32
Data Source, 21, 48
Data Type, 21
Digital Averaging, 19
Digital Direct mV/V
Calibration, 21
Digital Filter, 6
Digital Input, 15
Digital Setup, 18
Digital Span
Calibration Routine,
20, 21
Digital Zero Calibration
Routine, 20, 21
Direct mV/V
Operation, 19
Disclaimer, 2
Division, 18, 53
Document
Conventions, 5
E
EEPROM, 20, 21, 53
Electrical Interference,
7
Electro-Magnetic
Radiation, 7
EMC, 53
Errors Codes, 36
ESR? Command, 36
Excitation, 6, 8
F
FCN Command, 37
Filtering Techniques,
19
FIR Filter, 19
G
Graduations, 18
Grounding, 10
H
Humidity, 6
HYS Command, 38
I
IAD Command, 39
IDN Command, 40
Impedance, 6
Input / Output, 6
Instability, 7, 8
Installation
(Introduction), 7
Interference, 8
Intrinsic Safety, 10
Introduction, 5
Isolated Input, 6
Isolation, 6
L
LDW Command, 41
LED, 5, 23
LIV Command, 42
Load Cell Cable, 7, 8
Load Cell Connection,
8
Load Cell Signals, 7
Load Output, 6
LWT Command, 43
M
MSV? Command, 44
Multi-Drop Network,
12, 22, 28
N
Network Mode, 17, 46
Network Protocol, 6
Networking, 22
Noise Filtering, 19
O
Operating
Environment, 6
Output Protection, 6
Overall Error, 6
P
Parity, 17, 32
Password, 18
Permanent Memory,
20
PLC, 5, 22
Power Supply, 6, 7,
14, 15
R
RBT Command, 45
Remote Displays, 5,
22
Remote Input, 24
RES Command, 47
Resolution, 6, 18, 39,
53
RFI, 7, 53
RS-232, 5, 6, 10, 11,
12, 17, 22, 44, 46,
48
RS-485, 5, 6, 10, 11,
12, 13, 17, 22, 32,
44, 46, 48
S
Safety Standards, 6
Sampling Rate, 6
Scale Build, 7
Sense Inputs, 9
Sense Lines, 8, 36
SER Command, 48
Serial Communications
Links, 18, 20
Serial Output, 6, 22
Serial Outputs
(Introduction), 22
Serial Ports, 10
Setpoint Logic, 23
Setpoints, 14, 23
Sigma-Delta A/D
Converter, 5
Signal Strengths, 19
Span Adjustment, 6
Span Value, 21
Stability/Drift, 6
Status Indication, 23
Step-Response, 19, 31
Stop Bits, 17, 32
STP Command, 49
Sxx Command, 50
T
TAR Command, 51
TDD Command, 52
Temperature, 6, 27, 46
Termination Resistors,
12, 22
Test Mass, 20
Transistor Output, 6
U
Units, 18
User Format
Information
, 20, 21
V
Viewer Mode, 10, 16,
17
Voltage Output, 6, 29
Voltage Outputs, 6
Voltage Range, 6
W
Wire Bridge, 9
Z
Zero Value, 20, 21, 41
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Notes:
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