Rinstrum 1203 User manual

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

RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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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.

RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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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 350Ωload 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.

RINSTRUM - 1203 Weight Transmitter Reference Manual Rev 1.7
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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)