Technical Note: Rosemount 3051S Advanced HART Diagnostics with a Smart Wireless THUM™ Adapter

Technical Note: Rosemount 3051S Advanced HART Diagnostics with a Smart Wireless THUM™ Adapter
Technical Note
00840-0900-4801, Rev AA
January 2011
Configuration Guide
Rosemount 3051S Advanced HART Diagnostics
with a Smart Wireless THUM™ Adapter
This technical note is intended to describe the
procedure of configuring the Smart Wireless THUM
Adapter to output advanced diagnostics data from the
Rosemount 3051S Advanced Diagnostics Pressure
Transmitter. The instructions are written around the
advanced diagnostics DA2 option (3051S HDT Rev
3). The THUM Adapter may be used in cases where
the existing host system does not receive digital
HART data from instrumentation devices, but only
receives a 4-20 mA signal. The THUM Adapter
wirelessly transmits device information, such as
process variables and device status, so that it can be
integrated into the host system. Refer to the
Rosemount 3051S Product Manual 00809-0100-4801
and the THUM Adapter Product Manual
00809-0100-4075, for detailed information.
By default, the 3051S has a HART address of 0, while
the THUM Adapter has a default address of 63. If
configuration is done using AMS Device Manager
with a HART modem, then the WirelessHART
Adapter mode can be enabled using the Multi Drop
tab of the modem properties, as shown in Figure 2. If
the HART address of the THUM Adapter has been
changed from the default, it will be necessary to use
different addresses than shown in Figure 2.
Figure 2. Setting WirelessHART Adapter mode in AMS
Device Manager
The 3051S HART transmitter and THUM Adapter
must be connected to the host system, powered, and
functioning properly as shown in Figure 1. A HART
communication host, such as AMS Device Manager,
or a 375/475 Field Communicator must be connected
to the transmitter communication loop and be
successfully communicating.
Figure 1. Installation of Smart Wireless THUM Adapter
Wired Device
4-20 mA Loop +
4-20 mA Loop -
Power +
- PWR / COMM Connector Load Resistor 
250 
After the HART modem is connected, and the
WirelessHART Adapter mode configured, AMS
Device Manager will show the icons for both the
3051S and the THUM Adapter, similar to Figure 3.
Figure 3. 3051S Advanced Diagnostics and THUM Adapter
in AMS Device Manager
Technical Note
Configuration Guide
Field Communicator
To configure the 3051S and THUM Adapter using a
375 or 475 Field Communicator, set the poll for the
range of addresses used by the 3051S and THUM
Adapter. This is done using the key sequence:
00840-0900-4801, Rev AA
January 2011
To enter the Network ID and Join Key using a Field
Communicator, you will first need to obtain the
information from the Gateway. To do this navigate to
the Setup>Network>Settings page (Figure 5).
Figure 5. Gateway Network Setting Page
HART Application > Utility (3) > Configure HART
Application (1)
Polling Options = Poll By Address
Polling Addresses = Custom Range
Custom Range = 0, 63
The THUM Adapter must be joined to the network of
a Smart Wireless Gateway in order to transmit any
information. In order to join the THUM Adapter to the
Gateway network, the correct Network ID and Join
Key must be entered.
To enter the Network ID and Join Key using AMS
Device Manager, the THUM Adapter and Gateway
will both need to be connected to AMS Device
Manager. For information on how to connect a
Gateway to AMS Device Manager please see the
Gateway manual 00809-0200-4420. Once both the
THUM Adapter and Gateway are connected to AMS
Device Manager, drag and drop the THUM Adapter
icon onto the Gateway icon as shown in Figure 5.
This will automatically write the correct Network ID
and Join Key to the THUM Adapter. The THUM
Adapter will now join the network when it is in range
of the Gateway.
Figure 4. Setting Network ID and Join Key using AMS
Device Manager.
After the Network ID and Join Key are obtained,
enter them into the THUM Adapter using the Field
Communicator. The menu directions are as follows:
Configure (2) >Guided Setup (1) > Join Device to
Network (1)
For communication with the Smart Wireless THUM
Adapter, HART Burst mode in the 3051S must be set
to Off.
Once the 3051S and the THUM Adapter are
integrated and communicating, all of the digital HART
information associated with the transmitter is visible
in AMS Device Manager. Figure 6 shows the Device
Dashboard Overview screen in AMS Device
Manager for the 3051S HART Advanced Diagnostics
Transmitter. From the AMS Screen, one can view
and configure any of the advanced diagnostics
features, including Statistical Process Monitoring
(SPM), Power Advisory Diagnostic, Service Alerts,
and Event Logs. Refer to the Rosemount 3051S
Product Manual 00809-0100-4801 for complete
information on configuring and using Advanced
Technical Note
00840-0900-4801, Rev AA
January 2011
Configuration Guide
Figure 6. AMS Device Manager Device Dashboard View
for 3051S Advanced Diagnostics.
The Primary Variable (PV) is the variable that is
output as the 4-20 mA loop current. The 2nd (SV),
3rd (TV), and 4th (QV) variables are HART digital
variables. By default the variable mapping in the
3051S Advanced Diagnostics is set as shown in
Table 1.
TABLE 1. Default HART Variable Mapping for 3051S
Advanced Diagnostics
HART Process Variables (PV, SV, TV, and QV) can
also be seen in the Wireless Gateway Web Interface,
as shown in Figure 7.
Figure 7. HART Digital Process Variables in the Wireless
Gateway Web Interface.
Variable (PV)
2nd Variable
3rd Variable
4th Variable
The SV, TV, and QV digital variables can be set to
any of the following: Pressure, Module Temperature,
Scaled Variable, Standard Deviation, Mean, or CV
(Coefficient of Variation).
Using the wireless gateway it is possible to send the
HART process variables to a historian or trending
package using Modbus or OPC.
In order to receive the information from the 3051S
Advanced Diagnostic transmitter in the host system,
integration must be performed between the Gateway
and host system. The Gateway can be integrated by
Modbus TCP, OPC, or HTML. Integration is setup in
the Gateway’s web interface. For more information
on host integration please see the Gateway manual
00809-0200-4420 section 5.
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