Emerson Rosemount 3300 Series Specifications

Manual Supplement
00809-0300-4811, Rev CA
October 2010
Rosemount 3300 Series
Rosemount 3300 Series
with HART to Modbus Converter
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3
Workflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3
Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-4
Establish HART Communication . . . . . . . . . . . . . . . . . . . . page 1-8
Transmitter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . page 1-10
Modbus Communication Protocol Configuration . . . . . . page 1-11
Alarm Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-19
Common Modbus Host Configuration . . . . . . . . . . . . . . . page 1-22
Specific Modbus Host Configuration . . . . . . . . . . . . . . . . page 1-27
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-31
HMC Firmware Upgrade in Rosemount Radar Master . . page 1-32
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-37
This instruction is a supplement to the Rosemount 3300 Series Reference
Manual (Document No. 00809-0100-4811).
www.rosemount.com
Manual Supplement
00809-0300-4811, Rev CA
October 2010
Rosemount 3300 Series
SAFETY MESSAGES
Procedures and instructions in this section may require special precautions to
ensure the safety of the personnel performing the operations. Information that
raises potential safety issues is indicated by a warning symbol ( ). Please
refer to the following safety messages before performing an operation
preceded by this symbol.
Failure to follow safe installation and service guidelines could result in death or
serious injury
•
Make sure the transmitter is installed by qualified personnel and in accordance
with applicable code of practice.
•
Use the equipment only as specified in the Rosemount 3300 Series Reference
Manual (Document No. 00809-0100-4811), and in this Manual Supplement.
Failure to do so may impair the protection provided by the equipment.
•
Do not perform any services other than those contained in this manual unless
you are qualified.
Explosions could result in death or serious injury
•
Verify that the operating environment of the transmitter is consistent with the
appropriate hazardous locations specifications.
•
To prevent ignition of flammable or combustible atmospheres, disconnect
power before servicing.
•
Before connecting a HART® based communicator in an explosive atmosphere,
make sure the instruments in the loop are installed in accordance with
intrinsically safe or non-incendive field wiring practices.
•
To avoid process leaks, only use o-ring designed to seal with the
corresponding flange adapter.
Electrical shock can result in death or serious injury
•
Avoid contact with the leads and terminals. High voltage that may be present
on leads can cause electrical shock.
•
Make sure the main power to the Rosemount 3300 Series transmitter is off and
the lines to any other external power source are disconnected or not powered
while wiring the transmitter.
Probes with non-conducting surfaces
•
1-2
Probes covered with plastic and/or with plastic discs may generate an
ignition-capable level of electrostatic charge under certain extreme conditions.
Therefore, when the probe is used in a potentially explosive atmosphere,
appropriate measures must be taken to prevent electrostatic discharge.
Manual Supplement
00809-0300-4811, Rev CA
October 2010
INTRODUCTION
Rosemount 3300 Series
The Rosemount 3300 Series transmitter is a Modbus compatible
measurement device that supports communication with a Remote Terminal
Unit (RTU) using a subset of read, write, and diagnostic commands used by
most Modbus compatible host controllers. The transmitter also supports
communication through Levelmaster and Modbus ASCII protocols.
The HART® to Modbus Converter (HMC) module is located inside the
Rosemount 3300 transmitter enclosure and provides power to and
communicates with the transmitter through a HART interface.
Figure 1-1. System Overview
3300 transmitter enclosure
Modbus and
Levelmaster
communication
HART
signals
3300
transmitter
electronics
Remote
Terminal
Unit
HART to
Modbus
Converter
HART signals
RCT/
Field
Communicator
During normal operation, the HMC “mirrors” the contents of process variables
from the 3300 transmitter to the Modbus registers. To configure the 3300
transmitter, it is possible to connect a configuration tool to the HMC. See
“Transmitter Configuration” on page 1-10 for more information.
WORKFLOW
Overview of workflow for commissioning a Rosemount 3300 transmitter with
Modbus protocol:
1. Mount the transmitter on the tank.
2. Connect the power and communication wires.
3. Establish HART communication with the transmitter through Rosemount
Radar Configuration Tools (RCT), or a Field Communicator. This is done
by:
•
Connecting to the HART terminals, or
•
Connecting to the MA (+)/MB (-) terminals (tunneling mode)
4. Configure the transmitter.
5. Configure the Modbus communication.
6. Configure Modbus host.
7. Verify output values as reported by the transmitter.
MECHANICAL
INSTALLATION
For instructions on how to mount the Rosemount 3300 transmitter, refer to the
Rosemount 3300 Series Reference Manual (Document No. 00809-0100-4811).
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Rosemount 3300 Series
ELECTRICAL
INSTALLATION
NOTE
For general electrical installation requirements, including grounding
requirements, refer to Rosemount 3300 Series Reference Manual (Document
No. 00809-0100-4811).
To connect the Rosemount 3300:
1. Disconnect/shut off the electrical power to transmitter head and then
open the instrument cover. Do not remove the cover in an explosive
atmosphere with a live circuit.
2. Pull the cable through the cable gland/conduit. For the RS-485 bus, use
shielded twisted pair wiring, preferably with an impedance of 120
(typically 24 AWG) in order to comply with the EIA-485 standard and
EMC regulations. The maximum cable length is 4000 ft/1200 m.
3. Make sure that the transmitter housing is grounded, then connect wires
according to Figure 1-2 and Table 1-1. Connect the lead that originates
from the “A” line from the RS-485 bus to the terminal marked MB (-), and
the lead that originates from the “B” line to the terminal marked MA (+).
4. If it is the last transmitter on the bus, connect the 120 termination resistor.
5. Connect the leads from the positive side of the power supply to the
terminal marked PWR +, and the leads from the negative side of the
power supply to the terminal marked PWR -. The power supply cables
must be suitable for the supply voltage and ambient temperature, and
approved for use in hazardous areas, where applicable.
6. Attach and tighten the housing cover. Tighten the cable gland, then plug
and seal any unused terminals, and connect the power supply.
Figure 1-2. Field Wiring Connections
120
RS-485 Bus
B
120
A
Power
Supply
HART +
HART -
120
In case it is the last
transmitter on the
bus, connect the
120termination
resistor
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October 2010
Connection Terminals
Rosemount 3300 Series
The connection terminals are described in Table 1-1 below:
Table 1-1. Connection Terminals
Connector label
Description
HART +
Positive HART connector
HART -
Negative HART connector
MA (+)
Modbus RS-485 B connection
(RX/TX+)(1)
MB (-)
Modbus RS-485 A connection
(RX/TX-)(1)
PWR +
Positive Power input terminal
PWR -
Comment
Connect to PC with RCT
software, Field
Communicator, or other
HART configurators.
Connect to RTU
Apply +8 Vdc to +30 Vdc
Negative Power input terminal (max. rating)
(1) The designation of the connectors do not follow the EIA-485 standard, which states
that RX/TX- should be referred to as 'A' and RX/TX+ as 'B'.
Figure 1-3. Connection Terminals
for Rosemount 3300 with HART to
Modbus Converter
HART +
HART -
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Rosemount 3300 Series
RS-485 Bus
Installation cases
•
The 3300 transmitter does not provide electrical isolation between the
RS-485 bus and the transmitter power supply
•
Maintain a bus topology and minimize stub length
•
Figure 1-4 identifies multidrop wiring topology, where up to 32 devices
may be wired on one RS-485 bus
•
The RS-485 bus needs to be terminated once at each end, but should
not be terminated elsewhere on the bus
Install the Rosemount 3300 Series Transmitters as shown in Figure 1-4.
•
Use common ground for Modbus Master and Power Supply
•
The Power cables and RS-485 Bus are in the same cable installation
•
An ground cable is installed and shall be used (cable size ≥4 mm
according to IEC60079-14, or size according to applicable national
regulations and standards). A properly installed threaded conduit
connection may provide sufficient ground.
•
The cable shielding is grounded at master site (optional)
NOTE
The HMC equipped transmitter contains intrinsically safe circuits that require
the housing to be grounded in accordance with national and local electrical
codes. Failure to do so may impair the protection provided by the equipment.
Figure 1-4. Multidrop Connection of
3300 Transmitters
120
120
B
A
RS-485 Bus
Modbus
Master
Z
Power
Supply
Internal
Ground Screw
Internal
Ground Screw
External
Ground Screw
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External
Ground Screw
Manual Supplement
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October 2010
Rosemount 3300 Series
Alternatively, the Rosemount 3300 Series Transmitters can be installed as
shown in Figure 1-5. If this wiring layout is used, there is an increased risk for
communication disturbances due to differences in potential between
grounding points. By using the same grounding point for Modbus Master and
Power Supply, this risk is reduced.
Figure 1-5. Alternative Multidrop
Connection of 3300 Transmitters
120
120
B
A
RS-485 Bus
Modbus
Master
Z
Internal
Ground Screw
Internal
Ground Screw
External
Ground Screw
External
Ground Screw
Power
Supply
Star Topology
For a Star Topology Connection of the 3300 transmitters, the transmitter with
the longest cable run needs to be fitted with a 120- termination resistor.
Figure 1-6. Star Topology
Connection of 3300 Transmitters
For Star Topology
connection,
connect the 120
termination
resistor to the
transmitter with
the longest cable
run.
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Rosemount 3300 Series
ESTABLISH HART
COMMUNICATION
The Rosemount 3300 Series transmitter can be configured using the
Rosemount Radar Configuration Tools (RCT) PC software, or a Field
Communicator. Configuration is done by sending HART commands through
the HART to Modbus Converter (HMC) to the 3300 transmitter electronics. To
establish HART communication, connect to the MA (+)/MB (-) terminals, or to
the HART terminals. Both alternatives are described below.
Connect to the
MA (+)/MB (-) terminals
The 3300 level transmitter can be configured with RCT using the MA (+),
MB (-) terminals.
An RS-485 Converter is required to connect to the transmitter.
The transmitter will try to establish communication using different protocols
during 20 second timeslots from time of startup.
Figure 1-7. RS-485 Communication
after startup
Modbus RTU HART
20 seconds
20 seconds
0s
20 s
Configured
protocol
(Modbus RTU, HART
Levelmaster, 20 seconds
or Modbus
ASCII)
20 seconds
40 s
60 s
Configured
protocol
(Modbus RTU,
Levelmaster,
or Modbus
ASCII)
20 seconds
80 s
Time
100 s
The transmitter will continue to use a communication protocol once
communication has been established.
To configure the 3300 level transmitter using RCT and the MA (+), MB (-)
terminals, do the following:
1. Connect the RS-485 Converter to the MA (+), MB (-) terminals.
2. Connect the power wires (or cycle power) to the transmitter.
3. Wait 20 seconds.
4. In RCT, select Poll Address in the drop-down list (also see note below).
Click the button to the left of the drop-down list to start polling.
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5. After connection to the transmitter, perform the necessary configuration.
6. When the configuration is completed, disconnect the RS-485 Converter,
connect the Modbus communication wires, and cycle power to the
transmitter
7. Verify communication between the transmitter and the RTU is
established (can take up to 60 seconds from startup).
NOTE
If there are multiple 3300 Modbus units on the bus with HART address 1, it
will not be possible to establish communication (by default the transmitters
have HART address 1). To establish communication in this case, make sure
the 3300 transmitter is alone on the bus. Disconnect or turn off power from
any other devices.
Connect to the HART
terminals
To configure the 3300 transmitter, connect the communicator or PC to the
HART terminals using a HART modem, see Figure 1-3 on page 1-5. Both the
configuration tool and the RS-485 bus can be connected simultaneously.
Configuration data is sent with HART commands through the HMC to the
3300 transmitter electronics, as illustrated in Figure 1-1 on page 1-3. Note
that the power supply must be connected during configuration, see also
“Electrical Installation” on page 1-4.
NOTE
Measurement data is not updated to the Modbus Master when a configuration
tool is connected.
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TRANSMITTER
CONFIGURATION
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October 2010
Configuration data such as Tank Height, Upper Null Zone, dielectric
constants, and other basic parameters are configured in the same way as for
a standard Rosemount 3300 Series transmitter. For more information, see the
Rosemount 3300 Series Quick Installation Guide (Document No.
00825-0100-4811).
Make sure that the measurement unit of the Primary Variable (PV) matches
the configuration of the Modbus Host since the transmitter output value does
not include any information on associated measurement units.
For further information on basic configuration, see the Rosemount 3300
Series Reference Manual (Document No. 00809-0100-4811).
NOTE
The 3300 transmitter with Modbus protocol is configured to HART address 1
at factory. This reduces power consumption by locking the analog output at 4
mA.
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MODBUS
COMMUNICATION
PROTOCOL
CONFIGURATION
Rosemount 3300 Series
The Rosemount 3300 Series transmitter can communicate with RTUs using
Modbus RTU (often referred to as just “Modbus”), Modbus ASCII, and
Levelmaster (also known as “ROS,” “Siemens,” or “Tank” protocol).
Table 1-2. List of RTUs’ Supported
Protocols
RTU
Protocols
ABB Totalflow
Modbus RTU, Levelmaster
Bristol ControlWave Micro
Modbus RTU
Emerson Process
Management ROC800 Series
Modbus RTU, Levelmaster(1)
Emerson Process
Management FloBoss 107
Modbus RTU, Levelmaster(1)
Kimray DACC 2000/3000
Levelmaster
ScadaPack
Modbus RTU
Thermo Electron Autopilot
Modbus RTU, Levelmaster
(1) Levelmaster protocol should be used when using the Emerson
Process Management Digital Level Sensor (DLS) User Program
or Application Module together with the device. Use Modbus
RTU in other cases.
Modbus ASCII is not commonly used, since it doubles the amount of bytes
for the same message as the Modbus RTU.
If you do not have any of these RTUs, check your RTU manual to see which
protocols it supports.
Using RCT to change
communication
parameters
NOTE
To change Modbus communication parameters, the Rosemount 3300 Series
transmitter must use HART address 1, the default address.
NOTE
After changing communication parameters, disconnect the HART modem and
wait at least 60 seconds for the change to take effect.
In case the MA (+)/MB (-) terminals are used for connection to the HMC,
disconnect the RS-485 Converter, cycle power to the transmitter and wait up
to 60 seconds for the change to take effect.
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To change the Modbus address and communication parameters(1) in
Rosemount Radar Configuration Tools (RCT):
1. Start RCT and connect to the transmitter.
2. In the RCT workspace Project Bar, click the Setup icon to open the
Setup window.
Modbus Setup
3. Select the Output tab.
4. Click the Modbus Setup button.
5. In the Modbus Setup window, select Modbus protocol and type the
desired Modbus address.
6. Enter the baud rate, parity, and stop bits, then click the OK button.
It is also possible to enter a user-defined Modbus Message in the Modbus
String area.
See separate sections below for more details regarding each Modbus
protocol.
(1)
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The Modbus Setup function is available in RCT version 2.03.0002 and later.
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Using a Field
Communicator to change
communication
parameters
Rosemount 3300 Series
NOTE
To change Modbus communication parameters, the Rosemount 3300 Series
transmitter must use HART address 1, the default address.
NOTE
After changing communication parameters, disconnect the Field
Communicator and wait up to 60 seconds for the change to take effect.
The Modbus communication parameters can be changed by entering a text
string in the HART Message parameter. See separate sections below for
details regarding each Modbus protocol and what strings to use.
When using the Field Communicator, the Message Area is reached using
HART command [1,4,1,6].
Modbus RTU
Communication Setup
Table 1-3. Modbus RTU
Communication Parameters
The Rosemount 3300 Series is configured with the default Modbus RTU
address 246, and with the following Modbus RTU communication parameter
default settings:
Parameter
Baud Rate
Start Bits
(1)
(1)
Default Value
Configurable Values
9600
1200, 2400, 4800, 9600, 19200
One
One
Eight
Eight
Parity
None
None, Odd, Even
Stop Bits
One
One or Two
Address
range
246
1-255
Data Bits
(1) Start Bits and Data Bits cannot be changed.
To reset the communication parameters to default Modbus RTU settings, use
the following Modbus Message:
HMC
Modbus RTU Parameter Configuration Example
You want to use address 44 for the 3300 transmitter, and the following
communication parameters are used by the host:
Table 1-4. Communication
Parameters Used by the Host
(example)
Parameter
Baud Rate
Value
4800
Start Bits
One
Data Bits
Eight
Parity
Odd
Stop Bits
Two
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Rosemount 3300 Series
To configure the 3300 transmitter to communicate with the Host in this
example, the following text string is written to the HART Slave 1 Message
Area:
HMC A44 B4800 PO S2.
HMC: These three letters are used for safety and will eliminate the risk of
changing the configuration data by mistake.
A44: A indicates that the following number is the new address (address 44).
Leading zeroes are not needed.
B4800: B indicates that the following number is the new baud rate (1200,
2400, 4800, 9600, 19200).
PO: P identifies the following letter as parity type (O = odd, E = even, and
N = none).
S2: S indicates that the following figure is the number of stop bits (1 = one,
2 = two).
Only values that differ from the current values need to be included. For
example, if only the address is changed, the following text string is written into
the 3300 (HART Slave 1) Message Area:
HMC A127,
indicates that 127 is the new address.
Levelmaster
Communication Setup
Table 1-5. Levelmaster
Communication Parameters
The default and configurable parameter values can be found in Table 1-5.
Parameter
Default value
Configurable value
Baud Rate
9600
1200, 2400, 4800, 9600, 19200
Start Bits
One
One
Data Bits
Seven
Seven, Eight
Parity
None
None, Odd, Even
Stop Bits
One
One or Two
Address
1
1-99
To reset the communication parameters to default Levelmaster settings, use
the following Modbus Message:
HMC M2
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Rosemount 3300 Series
Levelmaster Parameter Configuration Example
You want to use address 2 for the 3300 transmitter and the host uses the
following parameters:
Table 1-6. Parameters Used by the
Host (in case of Levelmaster,
example)
Parameter
Baud Rate
Value
9600
Start Bits
One
Data Bits
Seven
Parity
None
Stop Bits
One
To configure the 3300 transmitter to communicate with the Host in this
example, the following text string is written to the Modbus Message area.
HMC M2 A2 B9600 D7 PN S1.
NOTE
Include all the parameters when writing to the message area.
Note that an address must be unique on the bus.
HMC: These three letters are used for safety and will eliminate the risk of
changing the configuration data by mistake.
M2: This means that the Levelmaster protocol is to be used.
A2: A indicates that the following is the new address (address 2). Leading
zeroes are not needed.
B9600: B indicates that the following number is the new baud rate (1200,
2400, 4800, 9600, 19200).
D7: D indicates that the following data bits are to be used (7 = seven,
8 = eight).
PN: P identifies the following letter as parity type (O = odd, E = even, and
N = none).
S1: S indicates that the following figure is the number of stop bits (1 = one,
2 = two).
Note: Start Bits are not configurable and cannot be set.
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In Table 1-7 and Table 1-8 is a description of the implemented functions of
Levelmaster protocol in the HMC.
Table 1-7. Implemented Functions
of Levelmaster Protocol
Input format
Description
Output format
UnnN?
Return ID number
UnnNnnCcccc
UnnNmm
Set ID number
UnnNOKCcccc
UnnF?
Return number of floats
UnnFxCcccc
UnnFx?
Set number of floats
UnnFOKCcccc
Unn?
Return floats and other data
UnnDddd.ddFfffEeeee
WwwwCcccc(1)
(1) In this case, number of floats is set to 1. If number of floats is set to 2, the Output Format
would be: UnnDddd.ddDddd.ddFfffEeeeeWwwwCcccc
NOTE
If one float is sent, it is “Float1”. If two floats are sent, it is “Float 1” before
“Float 0”.
Table 1-8. Letters and Expressions
Used in Previous Tables
Letter
Description
nn
nn is used to identify slave to respond,
nn is a number 00-99 or ** (wildcard).
The EmulCtrl Address Holding register can be configured to a higher
value than 99. In that case, the address will be truncated to 99.
mm
mm is the new ID number for the slave; mm is a number 00-99.
x
x is the number of floats returned when slave receives Unn?, x is a
number 0-2.
cccc
Is the 16 bit CRC checksum, cccc are hexadecimal characters.
ddd.dd
ddd.dd is the distance value from slave 1. Note that the first d can also be
a ‘-’ (minus).
Float 1
Slave 1 PV.
Float 0
Slave 1 SV.
fff
The temperature value. Configured by Holding Register 3208 in HMC.(1)
eeee
An error value.
Bit 0: Invalid SV value (Float 0).
Bit 8: Invalid Temperature value.
Bit 12: Invalid PV value (Float 1).
Wwww
A warning value, not used in this implementation.
(1) Any of the four available variables from any of the five HART slaves can be selected as
the temperature source.
The least four significant bits (bit 0-3) select the variable number. Bits 4-7 select the HART
slave address. If invalid values are used, the temperature value will be invalid, with no
Error bit set.
For example, if we want to use FV from HART Slave 3 as temperature source, we have
to write the value 34 Hex (52 decimal).
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Modbus ASCII
Communication Setup
Table 1-9. Modbus ASCII
Communication Parameters
Rosemount 3300 Series
The parameter, default, and configurable values are shown in Table 1-9
below.
Parameter
Default value
Configurable values
Baud Rate
9600
1200, 2400, 4800, 9600, 19200
Start Bits
One
One
Data Bits
Seven
Seven, Eight
Parity
None
None, Odd, even
Stop Bits
One
One or Two
Address
1
1-255
To reset the communication parameters to default Modbus ASCII settings,
use the following Modbus Message:
HMC M1
Modbus ASCII Parameter Configuration Example
You want to use address 246 for the 3300 transmitter and the host uses the
following parameters:
Table 1-10. Parameters Used by
the Host (in case of Modbus ASCII,
example)
Parameter
Value
Baud Rate
9600
Start Bits
One
Data Bits
Seven
Parity
None
Stop Bits
One
To configure the 3300 transmitter to communicate with the Host in this
example, the following text string is written to the Modbus Message area.
HMC M1 A246 B9600 D7 PN S1.
NOTE
Include all the parameters when writing to the message area.
Note that an address must be unique on the bus.
HMC: These three letters are used for safety and will eliminate the risk of
changing the configuration data by mistake.
M1: This means that the Modbus ASCII protocol is to be used.
A246: A indicates that the following number is the new address (address
246). Leading zeroes are not needed.
B9600: B indicates that the following number is the new baud rate (1200,
2400, 4800, 9600, 19200).
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D7: D indicates that the following data bits are to be used (7 = seven,
8 = eight).
PN: P identifies the following letter as parity type (O = odd, E = even, and
N = none).
S1: S indicates that the following figure is the number of stop bits (1 = one,
2 = two).
Note: Start Bits are not configurable and cannot be set.
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ALARM HANDLING
Rosemount 3300 Series
NOTE
If the Modbus communication setup has been changed, but the transmitter
has not yet started to use the new configuration, then you need to disconnect
the HART modem and wait up to 60 seconds for the change to take effect.
In case the MA (+)/MB (-) terminals are used for connection to the HMC,
disconnect the RS-485 Converter, cycle power to the transmitter and wait up
to 60 seconds for the change to take effect.
The Modbus communication settings will otherwise be lost if you write a new
message to the transmitter.
The output from the Modbus transmitter in case of an error (such as a field
device malfunction) can be configured. The values for Modbus registers
corresponding to PV, SV, TV, and QV will be changed accordingly (applicable
registers in area 1300, 2000, 2100, and 2200).
The default alarm output value for each protocol is defined on the next page.
Configuring alarm output value is optional.
Use the Modbus Message to configure the alarm output. To enter a Modbus
Message in RCT, do the following (Modbus RTU shown):
1. Start RCT and connect to the transmitter.
2. In the RCT workspace Project Bar, click the Setup icon to open the
Setup window.
Modbus Setup
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3. Select the Output tab.
4. Click the Modbus Setup button.
5. Enter the Modbus Message, and click OK.
See below for available Alarm Output Modbus Messages.
Modbus RTU
Message
HMC EN
HMC EF
HMC EU U-0.1
Alarm Output
Not a number (NaN), default
Freeze, hold last value
User defined value, -0.1 in this example
Levelmaster
Message
HMC M2 EH
HMC M2 EL
HMC M2 EF
HMC M2 EU U0
Alarm Output
High value, 999.99, default
Low value, -99.99
Freeze, hold last value
User defined value (range -99.99 to 999.99),
0 in this example
Modbus ASCII
Message
HMC M1 EN
HMC M1 EF
HMC M1 EU U-0.1
Alarm Output
Not a number (NaN), default
Freeze, hold last value
User defined value (range -99.99 to 999.99),
-0.1 in this example
NOTE
After changing the Alarm Output configuration, disconnect the HART modem
and wait up to 60 seconds for the change to take effect.
In case the MA (+)/MB (-) terminals are used for connection to the HMC,
disconnect the RS-485 Converter, cycle power to the transmitter, and wait up
to 60 seconds for the change to take effect.
Verify Alarm Output
1-20
To verify the Alarm Output, simulate a device failure by removing the
transmitter head. For instructions on removing the transmitter head and
re-attaching it, see the Rosemount 3300 Series Reference Manual
(Document No. 00809-0100-4811).
Manual Supplement
00809-0300-4811, Rev CA
October 2010
Use status information to
evaluate measurement
validity
Rosemount 3300 Series
The transmitter updates status information about the current measurement,
and this status information is available as a bitfield register through Modbus
communication.
By monitoring the status information it is possible to determine if the current
measurement output value is valid. See “Common Modbus Host
Configuration” on page 1-22 for details about the individual status bits.
Use Heartbeat to detect
errors
By reading and evaluating the Heartbeat value from the device, it is possible
to verify that the communication link between the transmitter, HMC, RTU and
even the control system communicating with the RTU is working.
Assign Heartbeat to one of the transmitter variables (SV, TV, or QV).
Heartbeat is increased by one for each measurement cycle in the device (until
it eventually starts over at zero again).
In case this value is not updated, it means that the communication link is
broken.
1-21
Manual Supplement
00809-0300-4811, Rev CA
October 2010
Rosemount 3300 Series
COMMON MODBUS
HOST CONFIGURATION
When using Modbus RTU or Modbus ASCII, the registers to receive status
and variables must be configured in the host system.
The transmission of single-precision (4 bytes) IEEE 754 floating point
numbers can be rearranged in different byte orders specified by the Floating
Point Format Code. The format code information, stated for each Remote
Terminal Unit (RTU) respectively, specifies which registers to poll from the
3300 transmitter in order for the RTU to correctly interpret floating point
numbers. The byte transmission order for each format code is demonstrated
in Table 1-11 below.
Table 1-11. Byte Transmission
Order is specified by the Floating
Point Format Code
Format
Code
Byte transmission
order
Description
0
[AB] [CD]
Straight word order, most significant byte first
1
[CD] [AB]
Inverse word order, most significant byte first
2
[DC] [BA]
Inverse word order, least significant byte first
3
[BA] [DC]
Straight word order, least significant byte first
NOTE
Some Modbus hosts cannot read the information described here using Input
Registers (Modbus function code 4). The Input Register information can also
be read using Holding Register (Function code 3). In this case, Input Register
number + 5000 is used as Holding Register number.
Between host system and device, it is recommended to use 60 seconds or
less between polls, and three retries.
Input Registers
The register area starting with 1300 can be configured to have any of the four
format codes. The configuration is done by setting FloatingPointFormatCode
register (holding register 3000) to 0-3, as shown in Table 1-11. This
configuration can be done with the Rosemount Radar Master program.
NOTE
Depending on the slave number the 3300 transmitter is using, different
registers must be used with the default slave number being 1. Slave number
is determined by the HART address.
1-22
Manual Supplement
00809-0300-4811, Rev CA
October 2010
Table 1-12. Output Variables for the
Configurable Floating Point Format
(default code 1)
Rosemount 3300 Series
Register Name
Register
Number
Note
Slave 1 Status
Conf
1300
Bit information in bitfield.
Bit 0: Invalid Measurement Slave 1 PV.
Bit 1: Invalid Measurement Slave 1 Non PV.
Bit 2: Invalid Measurement Slave 1 Non PV.
Bit 3: Invalid Measurement Slave 1 Non PV.
Bit 14: HART bus busy (slave in burst or other
master present)
Bit 15: HTM Task not running (option not
available).
Note: Bit 1-3 is set when Invalid Measurement of
Slave 1 Non PV. i.e. all three bits are set
simultaneously.
Slave 1 PV Conf
1302
Primary variable from slave 1 represented in
IEEE 754 format, using the byte order set in the
FloatingPointFormatCode register.
Slave 1 SV Conf
1304
Secondary variable from slave 1 represented in
IEEE 754 format, using the byte order set in the
FloatingPointFormatCode register.
Slave 1 TV Conf
1306
Tertiary variable from slave 1 represented in
IEEE 754 format, using the byte order set in the
FloatingPointFormatCode register.
Slave 1 FV Conf
1308
Fourth variable from slave 1 represented in IEEE
754 format, using the byte order set in the
FloatingPointFormatCode register.
Slave 2 data
1310-1318
Same data as for Slave 1.
Slave 3 data
1320-1328
Same data as for Slave 1.
Slave 4 data
1330-1338
Same data as for Slave 1.
Slave 5 data
1340-1348
Same data as for Slave 1.
The Rosemount 3300 Series register area starting with register 2000 is used
for hosts that require Floating Point Format Code 0 (see Table 1-13).
Floating Point Format Codes 2 and 3 use register areas 2100 and 2200,
respectively (see Table 1-14 and Table 1-15).
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Manual Supplement
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October 2010
Rosemount 3300 Series
Table 1-13. Output Variables for
Floating Point Format Code 0
Table 1-14. Output Variables for
Floating Point Format Code 2
1-24
Register Name
Register Number
Note
Slave 1 Status
2000
Bit information in bitfield:
Bit 0: Invalid Measurement Slave 1 PV.
Bit 1: Invalid Measurement Slave 1 SV.
Bit 2: Invalid Measurement Slave 1 TV.
Bit 3: Invalid Measurement Slave 1 FV.
Bit 14: HART bus busy (slave in burst or
other master present)
Bit 15: HTM Task not running (option not
available).
Note: Bit 1-3 is set when Invalid
Measurement of Slave 1 Non PV, i.e. all
three bits are set simultaneously.
Slave 1 PV
2002
Primary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 0.
Slave 1 SV
2004
Secondary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 0.
Slave 1 TV
2006
Tertiary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 0.
Slave 1 FV (QV)
2008
Fourth variable from slave 1 represented
in IEEE 754 format, using Floating Point
Format Code 0.
Register Name
Register Number
Note
Slave 1 Status
2100
Bit information in bitfield:
Bit 0: Invalid Measurement Slave 1 PV.
Bit 1: Invalid Measurement Slave 1 SV.
Bit 2: Invalid Measurement Slave 1 TV.
Bit 3: Invalid Measurement Slave 1 FV.
Bit 14: HART bus busy (slave in burst or
other master present)
Bit 15: HTM Task not running (option not
available).
Note: Bit 1-3 is set when Invalid
Measurement of Slave 1 Non PV, i.e. all
three bits are set simultaneously.
Slave 1 PV
2102
Primary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 2.
Manual Supplement
00809-0300-4811, Rev CA
October 2010
Rosemount 3300 Series
Register Name
Table 1-15. Output Variables for
Floating Point Format Code 3
Register Number
Note
Slave 1 SV
2104
Secondary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 2.
Slave 1 TV
2106
Tertiary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 2.
Slave 1 FV (QV)
2108
Fourth variable from slave 1 represented
in IEEE 754 format, using Floating Point
Format Code 2.
Register Name
Register Number
Note
Slave 1 Status
2200
Bit information in bitfield:
Bit 0: Invalid Measurement Slave 1 PV.
Bit 1: Invalid Measurement Slave 1 SV.
Bit 2: Invalid Measurement Slave 1 TV.
Bit 3: Invalid Measurement Slave 1 FV.
Bit 14: HART bus busy (slave in burst or
other master present)
Bit 15: HTM Task not running (option not
available).
Note: Bit 1-3 is set when Invalid
Measurement of Slave 1 Non PV, i.e. all
three bits are set simultaneously.
Slave 1 PV
2202
Primary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 3.
Slave 1 SV
2204
Secondary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 3.
Slave 1 TV
2206
Tertiary variable from slave 1
represented in IEEE 754 format, using
Floating Point Format Code 3.
Slave 1 FV (QV)
2208
Fourth variable from slave 1 represented
in IEEE 754 format, using Floating Point
Format Code 3.
1-25
Manual Supplement
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October 2010
Rosemount 3300 Series
Measurement Units
Measurement units for the various HART slaves are stored in input registers
as a Unit Code presented in Table 1-16. Conversion from Unit Code to
measurement unit is given in Table 1-17 on page 1-26.
Table 1-16. Measurement units and
corresponding input registers
Table 1-17. Conversion of Unit
Code to Measurement Unit
Register Name
Register Number
Slave 1 PV Units
104
Slave 1 SV Units
108
Slave 1 TV Units
112
Slave 1 FV (QV) Units
116
Unit Code
Note
See Table 1-17 for conversion from Unit
Code to Measurement Unit.
Measurement Unit
Unit Code
Volume
1-26
Measurement Unit
Length
40
US Gallon
44
Feet
41
Liters
45
Meters
42
Imperial Gallons
47
Inches
43
Cubic Meters
48
Centimeters
46
Barrels
49
Millimeters
111
Cubic Yards
112
Cubic Feet
33
Degree Fahrenheit
113
Cubic Inches
32
Degree Celsius
Temperature
Manual Supplement
00809-0300-4811, Rev CA
October 2010
SPECIFIC MODBUS
HOST CONFIGURATION
Rosemount 3300 Series
The Remote Terminal Unit needs to be configured to communicate and
correctly interpret data when reading input registers from the Rosemount
3300 Series transmitter.
Baud Rate
The specified Baud Rates below are recommendations. If other Baud Rates
are used, make sure that the 3300 and the RTU are configured for the same
communication speed.
Floating Point Format Code
See Section “Common Modbus Host Configuration” on page 1-22.
RTU Data Type
The RTU Data Type specifies which configuration to use in the RTU in order
for the RTU to correctly interpret a floating point number transmitted from the
3300 transmitter with Modbus.
Input Register Base Number
Data registers in the 3300 transmitter with Modbus are numbered exactly as
they are transmitted in the Modbus communication. Some RTUs use different
naming conventions and to configure the RTU to poll the correct registers
from the 3300 Modbus, an Input Register Base Number is stated for each
RTU respectively. E.g. if the input register base number is 1 for the RTU, the
3300 Modbus input register 1302 has to be entered in the RTU address as
input register 1303.
Emerson Process Management
ROC800 Series
Figure 1-8. Wiring Diagram for
Connecting 3300 Modbus to
Emerson Process Management
ROC800 Series
ROC800 Series
RS-485
3300 Modbus
MA (+)
MB (-)
PWR +
PWR -
A (RX/TX+)
B (RX/TX-)
Y
Z
COM
Power Supply
+ 8 to + 30 Vdc
(max. rating)
GND
Table 1-18. Parameter Values (in
case of Emerson Process
Management ROC800 Series)
Parameter
Value
Baud Rate
9600
Floating Point Format Code
0
RTU Data Type
Conversion Code 66
Input Register Base Number
0
The Input Register Base Number needs to be added to the Input Register
address of the 3300 transmitter. In this case, register 1300 needs to have
1300 entered as the address.
1-27
Manual Supplement
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October 2010
Rosemount 3300 Series
Emerson Process Management
FloBoss 107
Figure 1-9. Wiring Diagram for
Connecting 3300 Modbus to
Emerson Process Management
FloBoss 107
FloBoss 107
RS-485
3300 Modbus
MA (+)
MB (-)
PWR +
PWR -
A
B
NC
NC
PWR
GND
Power Supply
+ 8 to + 30 Vdc
(max. rating)
GND
Table 1-19. Parameter Values (in
case of Emerson Process
Management FloBoss 107)
Parameter
Value
Baud Rate
9600
Floating Point Format Code
0
RTU Data Type
Conversion Code 66
Input Register Base Number
0
The Input Register Base Number needs to be added to the Input Register
address of the 3300 transmitter. In this case, register 1300 needs to have
1300 entered as the address.
ABB TotalFlow
Figure 1-10. Wiring diagram for
connecting 3300 Modbus to ABB
TotalFlow
Table 1-20. Parameter Values (in
case of ABB TotalFlow)
Parameter
Value
Baud Rate
9600
Floating Point Format Code
0
RTU Data Type
16 Bit Modicon
Input Register Base Number
1
The Input Register Base Number needs to be added to the Input Register
address of the 3300 transmitter. In this case, register 1302 needs to have
1303 entered as the address etc.
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Manual Supplement
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October 2010
Rosemount 3300 Series
Thermo Electron Autopilot
Figure 1-11. Wiring Diagram for
Connecting 3300 Modbus to
Thermo Electron Autopilot
Power Supply
+ 8 to + 30 Vdc
(max. rating)
GND
Table 1-21. Parameter Values (in
case of Thermo Electron Autopilot)
Parameter
Value
Baud Rate
9600
Floating Point Format Code
1
RTU Data Type
IEEE Flt 2R
Input Register Base Number
0
The Input Register Base Number needs to be added to the Input Register
address of the 3300 transmitter. In this case, register 1302 needs to have
1302 entered as the address etc.
Bristol ControlWave Micro
Figure 1-12. Wiring Diagram for
Connecting 3300 Modbus to Bristol
ControlWave Micro
Power Supply
+ 8 to + 30 Vdc
(max. rating)
DB9 Male
GND
Table 1-22. Parameter Values (in
case of Bristol ControlWave Micro)
Parameter
Value
Baud Rate
9600
Floating Point Format Code
2 (FC 4)
RTU Data Type
32-bit registers as 2 16-bit registers
Input Register Base Number
1
The Input Register Base Number needs to be added to the Input Register
address of the 3300 transmitter. In this case, register 1302 needs to have
1303 entered as the address etc.
1-29
Manual Supplement
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October 2010
Rosemount 3300 Series
ScadaPack
Figure 1-13. Wiring Diagram for
Connecting 3300 Modbus to
SCADAPack 32
Power Supply
+ 8 to + 30 Vdc
(max. rating)
REF
Table 1-23. Parameter Values (in
case of SCADAPack 32)
Parameter
Value
Baud Rate
9600
Floating Point Format Code
0
RTU Data Type
Floating Point
Input Register Base Number
30001
The Input Register Base Number needs to be added to the Input Register
address of the 3300 transmitter. In this case, register 1302 needs to have
31303 entered as the address etc.
Kimray DACC 2000/3000
Table 1-24. Kimray Input Types and
Corresponding Values
1-30
This table shows input types in Kimray IMI software and the corresponding
value. The communication port must be configured to use “Tank Levels”
protocol.
Kimray Inp type
3300 variable
Tank Level1
PV
ddd.dd.alt. -dd.dd
Format
Tank Level2
SV
ddd.dd.alt -dd.dd
Manual Supplement
00809-0300-4811, Rev CA
October 2010
TROUBLESHOOTING
Rosemount 3300 Series
No communication on RS-485 bus (MA (+), MB (-))
•
Check that the cables are connected
•
Check that PWR+ is connected to + and PWR- is connected to - on the
power supply
•
Make sure the 3300 transmitter is supplied with 8-30 Vdc (max. rating)
•
Try alternating MA (+)/MB (-)if you are unsure of the polarity
•
If an RS-485 converter is used, make sure it is properly installed and
configured
•
The last 3300 transmitter may need a terminating 120-resistor
connected between MA (+) and MB (-)
No 3300 communication in RCT
•
Using HART+, HART• HART modem is not properly connected
• Polling address is incorrect in RCT (default 1)
•
Using MA (+), MB (-)
• See No communication on RS-485 bus
• Polling address is incorrect in RCT (default 1)
• Cycle the power and wait 20 seconds before polling
No communication with Modbus RTU protocol
•
See No communication on RS-485 bus
•
Make sure the “Modbus Communication Protocol Configuration” is
done properly
•
Make sure the Modbus RTU address is unique on the bus
•
Cycle the power and try to connect
•
Check the RTU communication settings
No communication with Modbus ASCII protocol
•
See No communication on RS-485 bus
•
Make sure the “Modbus Communication Protocol Configuration” is
done properly
•
Make sure the Modbus ASCII address is unique on the bus
•
Cycle the power, waiting 40 seconds before communication begins
•
Check the RTU communication settings
No communication with Levelmaster protocol
•
See No communication on RS-485 bus
•
Make sure the “Modbus Communication Protocol Configuration” is
done properly
•
Make sure the Levelmaster address is unique on the bus
•
Cycle the power, waiting 40 seconds before communication begins
•
Check the RTU communication settings
1-31
Manual Supplement
Rosemount 3300 Series
HMC FIRMWARE
UPGRADE IN
ROSEMOUNT RADAR
MASTER
00809-0300-4811, Rev CA
October 2010
The HMC’s firmware is upgraded using Rosemount Radar Master (RRM). A
detailed description on how to carry out the firmware upgrade is shown on the
following pages.
NOTE
All settings in the HMC will be lost after upgrading the transmitter.
Reconfiguration of Modbus communication setup and alarm handling is
required after completing the upgrade.
NOTE
During firmware upgrade, the HMC Modbus RTU address must be 246, the
default address. Make sure to disconnect other Modbus RTU devices that are
connected and have address 246.
NOTE
Do not interrupt communication between the PC and the 3300 level
transmitter during the firmware upload.
1. Start RRM and select Communication Preferences in the View menu.
2. Navigate to the Modbus tab and use the following settings:
•
Modem: RS-485
•
Baudrate: According to configuration in HMC (default 9600)
•
Stop Bits: According to configuration in HMC (default 1)
•
Parity: According to configuration in HMC (default None)
•
Handshake: RTS/CTS
•
Response Timeout: 1000 ms
•
Retries: 3
3. Select Enable Modbus Communication and click OK.
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Rosemount 3300 Series
4. If the HMC is configured for Modbus ASCII or Levelmaster
communication cycle the power to the transmitter (the HMC will then
communicate using Modbus RTU for 20 seconds and under that time it is
possible to connect with RRM).
5. Open the Search Device window and make sure Modbus is selected in
the Protocol list.
6. Search for HMCs by selecting “Scan Address Range”, and choose a
start and end address for Modbus. The default HMC Modbus address is
246.
7. Click the Start Scan button.
8. Click OK to connect when the device is found.
9. From the Service menu, choose the Enter Service Mode option.
10. Type password, “admin”.
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11. From the Service menu, choose the Upload Firmware option.
12. Click Browse.
13. Select the upgrade “.cry” file.
14. Click Open.
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Rosemount 3300 Series
15. Click the Upload button to start the firmware upgrade.
16. When upload is finished, select Diagnostics in the Tools menu.
Checksum
17. Click Device Errors and check for “Checksum”.
18. If it is on the list, choose the Factory Settings option from the Tools
menu.
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October 2010
19. Select All and click OK.
20. Select “Yes”.
NOTE
An error message might be displayed when performing the Reset to Factory
Settings operation. The operation has been successful if the checksum error
has been cleared.
21. Select Restart in the Tools menu to restart the HMC.
22. The checksum error should no longer be present (select Diagnostics in
the Tools menu to verify, see Step 16). If it still persists, follow the next
steps.
23. Select View Holding Registers in the Service menu and write the value
16760 to register 65510.
24. Restart the HMC.
25. If the HMC is configured for Modbus ASCII or Levelmaster
communication after upload has been completed, proceed with the
following:
1. Close RRM and disconnect the RS-485 converter from the HMC.
2. Cycle the power to the HMC to have it exit Modbus RTU
communication mode.
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Rosemount 3300 Series
SPECIFICATIONS
Table 1-25. Specifications
Power supply
8-30 Vdc (max. rating)
Power consumption
< 0.5 W (with HART address=1)
< 1.2 W (incl. four HART slaves)
Signal wiring
Two-wire half duplex RS-485 Modbus. Use shielded
twisted pair wiring, preferably with an impedance of
120(typically 24 AWG), in order to comply with
EIA-485 standard and EMC regulations.
Power supply cabling
The power supply cables must be suitable for the
supply voltage and ambient temperature, and approved
for use in hazardous areas, where applicable.
Ground (common mode)
voltage limit
±7V
Bus termination
Standard RS-485 bus termination per EIA-485
See the Rosemount 3300 Series Reference Manual (Document No.
00809-0100-4811) for further specifications.
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October 2010
Rosemount 3300 Series
The Emerson logo is a trademark and service mark of Emerson Electric Co.
Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc.
All other marks are the property of their respective owners.
Standard Terms and Conditions of Sale can be found at www.rosemount.com\terms_of_sale
© 2010 Rosemount Inc. All rights reserved.
Emerson Process Management
Rosemount Measurement
8200 Market Boulevard
Chanhassen MN 55317 USA
Tel (USA) 1 800 999 9307
Tel (International) +1 952 906 8888
F +1 952 949 7001
00809-0300-4811 Rev CA 10/10
Emerson Process Management
Shared Services Ltd
Heath Place
Bognor Regis
West Sussex PO22 9SH
England
Tel +44 (1243) 863 121
Fax +44 (1243) 867 554
Emerson Process Management
Asia Pacific Pte Ltd
1 Pandan Crescent
Singapore 128461
Tel +65 6777 8211
Fax +65 6777 0947
Service Support Hotline: +65 6770 8711
Email: Enquiries@AP.EmersonProcess.com