Rosemount Manual: Rosemount 2410 Tank Hub Tokyo Keiso Emulation Instruction Manuals & Guides
Manual Supplement
Existing data
polling unit
Existing Tokyo
Keiso host
Tokyo Keiso
gauges
Rosemount
2410 Tank Hub
Rosemount 2240S
Tem per atu re Tr ans mit ter
with sensor
Rosemo unt
5900S Radar
Level Gauge
00809-0600-2410, Rev AA
2017
Rosemount™ 2410 Tank Hub
Tokyo Keiso emulation instruction
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1
Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14
Optional configuration and settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15
1.0 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)
(1)
.
Figure 1. Rosemount Devices Replacing Old Gauges in an Existing Tokyo Keiso System
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).
Rosemount 2410 Tank Hub
2017
1.1 Emulation capabilities
Emulation enables the ability to replace old devices in another vendor’s existing tank gauging system,
with Rosemount devices. The Rosemount device will act 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 together with modern
Rosemount tank gauging devices, the legacy system is modernized step-by-step. The legacy system can
be upgraded while tanks are in operation and existing wiring can be re-used.
The tank hub can emulate replaced devices, acting as a slave.
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.
Manual Supplement
00809-0600-2410, Rev AA
Figure 2. Tank Hub Slave Emulation
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Rosemount 2410 Tank Hub
Manual Supplement
00809-0600-2410, Rev AA
1.2 Tokyo Keiso system characteristics
Rosemount 2410 Tank Hub
2017
The tank hub can emulate up to 10 tank positions
Level or Ullage value
Interface Level or Ullage
Average Liquid temperature
Spot temperature for 15 sensors
(1)
, each supporting:
Observed density is also supported for up to three tank positions.
Electrical interface and protocol
Table 1. Tokyo Keiso Protocol Options
Protocol Electrical interface
Tok yo Keis o Tokyo Keiso Non-IS 2-wire half duplex communication bus
Protocol request commands
The Tokyo Keiso protocol is based on a request/reply schedule. The request is transmitted on the Tokyo
Keiso bus and contains the address of the gauge together with a specific command. The request is always
six bytes. The number of bytes in the response depends on the request command.
There are two kinds of request commands:
(2)
Measurement value and status requests
Operational servo commands
The tank hub replies are designed to correspond to the replies usually sent from a servo gauge. From the
perspective of the Tokyo Keiso host, communication will work just as before the servo gauge was
replaced by a tank hub.
Table 2. Measurement Value and Status Requests
Command ASCII code Tank hub replies
O 0x4F
X 0x58
Y 0x59
Z 0x5A
P 0x50 Not supported by the tank hub.
g 0x67 Observed density and status (valid or invalid).
Level (or Ullage), Average temperature, Contact status, Float status, Alarm status
and Error status (E1 for invalid Level and E2 for invalid Average Temperature).
Temperature sensor 1-5:
Not connected status, Over range status, Dummy character.
Temperature sensor 6-10:
Not connected status, Over range status, Dummy character.
Temperature sensor 11-15:
Not connected status, Over range status, Dummy character.
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).
2. For additional information about the Tokyo Keiso protocol, contact your local Emerson Automation Solutions/Rosemount Tank Gauging representative.
Rosemount 2410 Tank Hub
3
Rosemount 2410 Tank Hub
2017
Table 3. Servo Commands
Command ASCII code
Servo command
description
Manual Supplement
00809-0600-2410, Rev AA
Tank hub implementation
M 0x4D
N 0x4E
n 0x6E
S 0x53 Control for stop
U 0x55 Control for hoist
L 0x4C Control for down
G 0x47
Control for measured
liquid surface
Control for measured
interface
Control for measured
bottom
Control for measure
density
After this command, the level value in request
command O is the product level.
After this command, the level value in request
command O is the free water level.
After this command, the level value in request
command O is the bottom (0 m).
Not supported by Rosemount 2410 Tank Hub.
Unsuccessful response status will be sent.
Not supported by Rosemount 2410 Tank Hub.
Unsuccessful response status will be sent.
Not supported by Rosemount 2410 Tank Hub.
Unsuccessful response status will be sent.
Successful response status will be sent.
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Rosemount 2410 Tank Hub
Manual Supplement
Ta nk M as t er™ PC
Primary bus:
TRL2/(RS485 Modbus)
Secondary bus:
Tok yo Keiso
FBM/
(RS485 converter)
Tokyo Keiso
modem
Tokyo Keiso
host
Tank hub with configuration on primary field bus and
Tokyo Keiso emulation on secondary field bus
00809-0600-2410, Rev AA
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
The Tokyo Keiso interface can only be connected to the Rosemount 2410 secondary field bus.
Configuration is performed as usual by connecting a FBM to the primary bus. The primary bus can be
used for regular TRL2 or RS485 Modbus communication.
Figure 3. Tokyo Keiso Emulation with Digital Current Loop on Secondary Field Bus
®
, RS485 Modbus, emulation or wireless communication.
Rosemount 2410 Tank Hub
2017
Rosemount 2410 Tank Hub
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Rosemount 2410 Tank Hub
Secondary field bus
Primary field bus
2017
2.0 Electrical installation
Manual Supplement
00809-0600-2410, Rev AA
2.1 Rosemount 2410 Tank Hub connections
Figure 4. Terminal Block in the Explosion-Proof/Flameproof Compartment
Table 4. Terminal Assignment for Non-Intrinsically Safe Side
(1)
Te rmi na l Designation Function
1 N/- Power, Neutral / DC -
2 L/+ Power, Line / DC +
3 K1 A Relay 1 output (optional). Hardware configurable NO/NC.
4 K1 com Relay 1 common
5 K2 A Relay 2 output (optional). Hardware configurable NO/NC.
6 K2 com Relay 2 common
7a/7b P Bus B Primary communication bus B
8a/8b P Bus A Primary communication bus A
9 S Pwr - Secondary bus power - (N/A for Tokyo Keiso)
10 S Pwr + Secondary bus power + (N/A for Tokyo Keiso)
11 S Bus B Secondary communication bus - (Tokyo Keiso Y-wire)
12 S Bus A Secondary communication bus + (Tokyo Keiso Y-wire)
PE PE Power supply protective ground
GND_1 GND_1 Housing chassis/shield Primary bus
GND_2 GND_2 Housing chassis/shield Secondary bus
1. Consult the Tokyo Keiso Electrical Installation Drawing (D7000003-779) for further information.
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Rosemount 2410 Tank Hub
Manual Supplement
00809-0600-2410, Rev AA
3.0 Configuration
The Rosemount 2410 Tank Hub is configured by using the TankMaster WinSetup configuration
program
well as advanced configuration and service functions.
Configuration of the Rosemount 2410 Tokyo Keiso emulation function can be performed with the
WinSetup program using the FBM or a RS485 converter, depending on the tank hub configuration.
3.1 Set up Modbus communication protocol
This section describes how to configure the Modbus Master protocol channel for communication.
To specify PC communication port and the standard communication parameters, do the following:
1. Open the Protocols folder in the Workspace window.
2. Select the Modbus Master icon.
(1)
. WinSetup is a user-friendly software package that includes basic configuration options as
Rosemount 2410 Tank Hub
2017
3. Right click the proper MBMaster icon and select Properties to configure the protocol channel.
4. Select the Communication tab.
1. See the Rosemount Tank Gauging System Configuration Manual for more information on how to use the TankMaster WinSetup software to configure the
Rosemount 2410 Tank Hub.
Rosemount 2410 Tank Hub
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