Rosemount™ 2410 Tank Hub
Whessoe emulation instruction
Manual Supplement
00809-0500-2410, Rev AB
January 2022
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Manual Supplement Contents
00809-0500-2410 January 2022
Contents
Chapter 1 Introduction.............................................................................................................. 5
1.1 Emulation capabilities..................................................................................................................6
1.2 Whessoe system characteristics...................................................................................................7
1.3 Rosemount 2410 Tank Hub communication................................................................................8
Chapter 2 Electrical installation................................................................................................13
2.1 Rosemount 2410 Tank Hub connections................................................................................... 13
Chapter 3 Configuration...........................................................................................................15
3.1 Set up Modbus communication protocol...................................................................................15
3.2 Install Rosemount 2410 Tank Hub in WinSetup......................................................................... 16
3.3 Configure specific variables for emulation................................................................................. 18
3.4 Verify Whessoe communication parameters............................................................................. 21
3.5 Configure field devices...............................................................................................................23
3.6 Start Whessoe emulation...........................................................................................................23
Chapter 4 Troubleshooting...................................................................................................... 25
4.1 Communication status.............................................................................................................. 25
4.2 Digital current loop modem.......................................................................................................26
Chapter 5 Optional configuration and settings......................................................................... 27
5.1 Engineering units.......................................................................................................................27
5.2 Miscellaneous control register................................................................................................... 27
5.3 Alarms....................................................................................................................................... 29
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Manual Supplement Introduction
00809-0500-2410 January 2022
1 Introduction
The purpose of this document is to provide guidelines on how to change from other
manufacturer’s devices to Rosemount equipment by exchanging gauges. When a gauge is
replaced with a Rosemount gauge, it is necessary to configure the Rosemount 2410 Tank
Hub for emulation.
The Rosemount field devices, for example Rosemount 5900 Radar Level Gauge and
Rosemount 2240S Temperature Transmitter, are connected to the tank hub using the
intrinsically safe Tankbus as usual. Emulation is done in the tank hub only. Each tank hub
can emulate up to 10 tanks (10 separate gauges)
Figure 1-1: Rosemount Devices Replacing Old Gauges in an Existing Whessoe System
(1)
.
A. Existing Whessoe host
B. Existing data polling unit
C. Rosemount 2410 Tank Hub
D. Whessoe gauges
E. Rosemount 5900S Radar Level Gauge
F. Rosemount 2240S Temperature Transmitter with sensor
G. Rosemount 3051S Pressure Transmitter
(1) Tank hub version “Multiple tanks” can emulate up to 10 tanks (10 gauges). Tank hub version “Single tank” can emulate up
to 2 tanks (2 gauges).
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Introduction Manual Supplement
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1.1 Emulation capabilities
Emulation enables the replacement of old devices with Rosemount devices in another
vendor’s existing tank gauging system. The Rosemount device will perform just like the
replaced gauge, using the other vendor’s protocol to communicate.
By using the other vendor’s field and control room communication protocol with modern
Rosemount tank gauging devices, the legacy system can be modernized step-by-step. The
legacy system can be upgraded while tanks are in operation and existing wiring can be reused.
The tank hub can emulate replaced devices, acting as either slave or master
hub slave emulation is described in this document.
Tank hub acting as slave
When an old gauge from another vendor is replaced with a tank hub connected to a
Rosemount field device, the tank hub will act as a slave answering requests and sending
data upwards towards the host.
A stepwise “bottom-up” upgrade is done by replacing legacy gauges to begin with, and
changing the complete control system at a later occasion.
(2)
. The tank
Figure 1-2: Tank Hub Slave Emulation
(2) Tank hub master emulation is supported for the Whessoe 550 protocol. For further information about Whessoe master
emulation contact your Emerson Automation Solutions/Rosemount Tank Gauging representative.
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Manual Supplement Introduction
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1.2 Whessoe system characteristics
A typical Whessoe tank gauging system consists of a number of field devices such as level,
temperature, and pressure devices. The Rosemount 2410 Tank Hub supports the Whessoe
protocols WM550 and WM660. The electrical interface can be either digital current loop or
RS485, see Table 1-1.
Table 1-1: Whessoe Protocol Options
Protocol Electrical interface
WM550 Digital current loop (DCL)
WM660 Digital current loop (DCL)
RS485
Figure 1-3: Whessoe Connection: Digital Current Loop - Devices Connected in Series
A. Whessoe master
B. 0-20 mA
Figure 1-4: Whessoe Connection: RS485 - Devices Connected in Parallel
A. Whessoe master
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1.3 Rosemount 2410 Tank Hub communication
The tank hub has slots for two independent communication boards, primary and
secondary field bus, for TRL2 Modbus®, RS485 Modbus, emulation, or wireless
communication.
Support for Whessoe emulation is selected in the model code, refer to Rosemount 2410
Product Data Sheet for more information. There are three alternatives available for
Whessoe emulation:
• Example 1: RS485 Modbus on primary bus
RS485 is available on the primary bus, preferably combined with TRL2 on the
secondary bus.
• Example 2: Digital current loop on Secondary Fieldbus
Whessoe (digital current loop) is available on the secondary bus, where the primary bus
can be used for regular TRL2 or RS485 communication.
• Example 3: Wireless communication in combination with Whessoe emulation
RS485 or Whessoe (digital current loop) is available on the primary bus, where the
secondary bus is used for WirelessHART® for normal communication.
Example 1: RS485 Modbus on primary bus
When the RS485 protocol is used for Whessoe emulation, the primary field bus is
connected to the Whessoe host. The secondary field bus can be used to configure the tank
hub for emulation, using a TRL2 modem like the Rosemount 2180 Field Bus Modem (FBM),
see Figure 1-5.
Figure 1-5: Emulation on Primary Bus and Configuration on Secondary Bus
A. Primary bus: RS485 Modbus
B. Secondary bus: TRL2 Modbus
C. RS485 converter
D. Whessoe host
E. FBM
F. Rosemount TankMaster™ PC
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It is possible to use the RS485 protocol for both emulation and configuration
(3)
. In that
case, the primary bus is first used for configuration and thereafter switched to the
Whessoe host in order to start emulation, as shown in Figure 1-6.
Figure 1-6: Emulation and Configuration on Primary Bus
A. Primary bus: RS485 Modbus
B. RS485 converter
C. Rosemount TankMaster™ PC
D. Whessoe host
(3) When using the RS485 protocol for configuring, different communication parameters must be used. See Table 3-1.
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Example 2: Digital current loop on Secondary Fieldbus
The digital current loop interface is connected to the Rosemount 2410 secondary field
bus.
Configuration is usually performed with a FBM connected to the primary bus. The primary
bus can be used for regular TRL2 or RS485 Modbus communication.
Figure 1-7: Configuration on Primary Bus and Emulation on Secondary Bus
A. Primary bus: TRL2 Modbus
B. Secondary bus: Digital current loop
C. FBM
D. Rosemount TankMaster™ PC
E. DCL modem
F. Whessoe host
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