SST Automation GT200-HT-MT User manual

HART/ Modbus TCP Gateway
GT200-HT-MT
User Manual
V 1.2 REV A
SST Automation
E-mail: [e-mail]
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Catalog
1 Product Overview...................................................................................................................................................... 4
1.1 Product Function.............................................................................................................................................4
1.2 Product Features............................................................................................................................................. 4
1.3 Technical Specifications................................................................................................................................. 4
1.4 Safety and Explosion-Proof Features............................................................................................................. 5
1.5 Related Products............................................................................................................................................. 5
1.6 Revision History............................................................................................................................................. 5
2 Quick Start Guide...................................................................................................................................................... 6
2.1 Configuration of Gateway.............................................................................................................................. 6
2.1.1 Pre-configured Settings....................................................................................................................... 6
2.1.2 Software Configuration....................................................................................................................... 6
2.2 Function Demo............................................................................................................................................. 10
3 Hardware Descriptions.............................................................................................................................................11
3.1 Product Appearance...................................................................................................................................... 11
3.2 Indicators.......................................................................................................................................................12
3.3 Configuration Switch/Button........................................................................................................................12
3.3.1 Status Setting Switch......................................................................................................................... 12
3.3.2 Internal / External Sampling Resistor Switch................................................................................... 13
3.4 Interface........................................................................................................................................................ 13
3.4.1 Power Interface..................................................................................................................................13
3.4.2 Ethernet Interface...............................................................................................................................14
3.4.4 HART Interface..................................................................................................................................14
3.5 Topology of GT200-HT-MT and Fieldbus Devices..................................................................................... 15
4 Software Instructions............................................................................................................................................... 17
4.1 Software Interface Description.....................................................................................................................17
4.2 Software Functional Specifications..............................................................................................................20
4.2.1 Configure the Fieldbus...................................................................................................................... 20
4.2.2Configure the HART Fieldbus............................................................................................................20
4.2.3 Conflict Detection..............................................................................................................................27
4.2.4 AutoMap............................................................................................................................................ 28
4.2.5 Upload Configuration........................................................................................................................ 29
4.2.6 Download Configuration................................................................................................................... 31
4.2.7 Memory Data Display....................................................................................................................... 31
4.2.8 Diagnose............................................................................................................................................ 33
4.2.9 Switching Tools................................................................................................................................. 36
5 Working Principle.................................................................................................................................................... 38
5.1 Flowchart of Executing One HART Command........................................................................................... 42
5.2 Universal Send and Receive Data................................................................................................................ 42

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5.3 Trigger Command......................................................................................................................................... 43
5.4 Data Exchange with Modbus TCP............................................................................................................... 44
6 Installation................................................................................................................................................................45
6.1 Machine Dimension......................................................................................................................................45
6.2 Installation Method.......................................................................................................................................45

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1 Product Overview
1.1 Product Function
GT200-HT-MT is a gateway that can exchange data between HART and Modbus TCP. HART interface can
be configured as a primary master or a secondary master. Modbus TCP side acts as a slave.
1.2 Product Features
Simple to use: users can refer to product manuals and application case to achieve communication in a short
time according to the requirements of the configuration;
Ethernet 10/100M adaptive;
Rich debugging features, the command of the subsection mapping function, the visual display of data
exchange, HART slave command diagnostic functions greatly facilitate the user's communication test;
With configuration software, it can configure the HART command and parameters of Modbus TCP Server.
1.3 Technical Specifications
[1] HART interface can be used as a primary master or the secondary master;
[2] Supports one HART channel, supports connecting at most 13 instruments with gateway internal resistor (270
Ω/2W) and supports connecting 15 instruments with an external resistor (250Ω/2W);
[3] HART interface supports single-point and multi-point mode;
[4] Under single-point mode, supports data burst operation;
[5] Supports all commands of the HART protocol;
[6] Each HART command can be configured for change-of-state output, polling output, initialization output or
no output;
[7] Supports up to 100 HART commands, the output data buffer area can be up to 2000 bytes, and the input data

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buffer area up to 3000 bytes;
[8] Each channel can choose to use an internal or external HART sampling resistor;
[9] Supports IP address conflict detection and auto routing ,Modbus TCP slave supports at most 36 connection
and 512 command request simultaneously;
[10] Power: 24VDC (9V~30V), <100mA (24VDC)
[11] Working circumstance temperature: -4℉~140℉(-20℃~60℃), Rel Humidity: 5%~ 95% (non-condensing);
[12] External dimensions(W*H*D):1.57 in*4.92 in*4.33 in(40mm*125mm*110mm);
[13] Installation: 1.38 in (35mm) DIN RAIL
[14] Protection Level: IP20
1.4 Safety and Explosion-Proof Features
GT200-HT-MT is not the product with the features of safety and explosion-proof, please put it in the control
room when using.
1.5 Related Products
The related products include: GT200-3HT-RS and GT200-HT-DP etc.
If you want to get more information about related products, please visit SSTCOMM website:
http://www.sstcomm.com.
1.6 Revision History
Revision
Date
Chapter
Description
REV A
02/11/2017
ALL
V1.2_Rev A new release,
open the memory data
display, diagnosis, mode
selection and other
functions, increase the
4.2.7, 4.2.8 chapters.

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2 Quick Start Guide
The following example introduces the use of the Gateway.
2.1 Configuration of Gateway
2.1.1 Pre-configured Settings
1. Turn gateway's "mode" DIP switch to "ON" and "function" DIP switch to "OFF"
2. Use crossed network cable to connect the gateway's Ethernet port (RJ45 interface) with that of computer;
3. Power on the gateway, now the IP address of the gateway is fixed: 192.168.0.10 and it is configurable.
2.1.2 Software Configuration
1. Open the SST-HE-CFG software installed on your computer;
2. Click "Fieldbus", in the "Mode" item on the right, choose Modbus TCP;
3. Click "Serial setting" in "config" menu, pop up the "Select the serial port" dialog box;

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4．Click "OK"; Select the gateway and Sign in the popup "Search Equipment" dialog box;
5．Select the "Fieldbus" in the tree view on the left, configure as below in the right interface;
6．Click the channel in the tree view on the left, the table appearing on the right is configured as below:

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Note: In the HART protocol, it specifies that the device with slave address 0 works under single point mode, it
allows digital communication and analog communication exist at the same time. The device with slave address
0~15 works under the multipoint mode, the analog output of the device is the minimum value (4mA) and it only
allows digital communication. The protocol also specifies that the default factory address is No.0.
7．Right click the channel, select "Add Node" in the popup menu as below:
8. Right click: "Node(0)", select "Add Command" in the popup menu, add Command ID1 in the popup dialog
box (double click "Command ID1" or select "Command ID1" and click "»"), click OK to return.

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9. Click "Command ID1", the configuration table on the right is configured as below:
10．Click the icon , in the pop-up dialog box, select the Ethernet port with which gateway is connected to
the computer, and then click Download:

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2.2 Function Demo
The HART interface of the gateway GT200-HT-MT connects with a 2-wire pressure transmitter with slave
address 0. The Ethernet port is connected to the PC through network cable. The configured Modbus POLL
software in PC can simulate to work as a Modbus TCP master, and then you can see the main variable value of the
pressure transmitter in data exchange window:

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3 Hardware Descriptions
3.1 Product Appearance
Note: This picture is for reference only. Product appearance should refer to the real object.
HART Interface
24VDC Interface
DIP Switch
Switch of sampling resistor
Ethernet interface
Status indicators

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3.2 Indicators
Indicator
State
State description
TX
Blinking
HART channel data is sending
OFF
No data sending
RX
Blinking
HART channel data is receiving
OFF
No data receiving
NS
Green LED OFF
No Modbus TCP data is exchanging
Green LED Blinking
Modbus TCP data is exchanging
MS
Red LED ON
Indicate confliction of IP address
Red LED Blinking
Connection OFF, configuration status, DHCP, BOOTP, IP
address conflict detection with Modbus TCP
Red LED Blinking
(For 3 seconds)
Connection OFF with Modbus TCP
3.3 Configuration Switch/Button
3.3.1 Status Setting Switch
Configuration switch is located at the bottom of product, bit 1 is the mode selecting bit and bit 2 is the
function setting bit.
Debugging (bit 1)
Configuration (bit 2)
Description
Off
Off
Run mode, enable read/write the
configuration data
Off
On
Run mode, disable read/write the
configuration data
On
Off
Configuration mode, IP address is
fixed: 192.168.0.10, User can
read/write the configuration data
On
On
Reserved
Note: After re-configuring the switch, you have to restart the GT200-HT-MT to make the settings take effect!
(Power off then Power On)
Off
On 1 2

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3.3.2 Internal / External Sampling Resistor Switch
GT200-HT-MT can choose using the internal sampling resistor or external sampling resistor to get the HART
signal. The specification of the internal resistor is 270Ω, 2W. When the power of the sampling resistor is more
than 2W, you must use an external resistor.
Switch to ON, using the internal
sampling resistor
Switch to OFF, using the external
sampling resistor
3.4 Interface
3.4.1 Power Interface
GND
NC
24V+
1
2
3
Pin
Function
1
Power GND
2
NC(Not Connected)
3
24V+, DC Positive 24V

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3.4.2 Ethernet Interface
Ethernet interface uses RJ-45 plug-in; its pin (standard Ethernet signal) is defined as below:
Pin
Signal description
S1
TXD+, Tranceive Data+, Output
S2
TXD-, Tranceive Data-, Output
S3
RXD+, Receive Data+, Input
S4
Bi-directional Data+
S5
Bi-directional Data-
S6
RXD-, Receive Data-, Input
S7
Bi-directional Data+
S8
Bi-directional Data-
3.4.4 HART Interface
HART Channel
Symbol
Function
HARTLOOP+
Connect HART signal negative
HARTLOOP-
Connect 24V power negative
NC
Not connected

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3.5 Topology of GT200-HT-MT and Fieldbus Devices

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Note: 1. Some HART slave instrument need to perform self-test and other internal work when power is on, they
may not start HART communication, then gateway cannot receive the response data of the instrument right now. It
is recommended the HART slave instrument and gateway uses separate power supply so that the gateway can
immediately establish communication with instrument.
2. When configuring HART commands in the software SST-HE-CFG, the commands need to be
configured according to the actual demands. To improve the speed of bus communication, it is recommended not
to configure the empty node (in fact, not connected to the node) and empty commands (the actual unnecessary
commands).

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4 Software Instructions
4.1 Software Interface Description
SST-HE-CFG is configuring software based on Windows platform and it is used to configure HART series
products of gateway.
The following describes how to use the software SST-HE-CFG to configure the product GT200-HT-MT.
Double-click on the icon to enter the main interface of software:
Tool Bar:
Toolbar interface shown as follow:
Equipment section: can
choose the operating
targets, including field
bus or subnet, add the
nodes and commands
Menu Bar
Tool Bar
Title Bar
Configuration section:
Input configuration
parameters, gray part is
not modifiable, white
part is modifiable
Notes section: The
specific explanation of
the nouns appearing in
the configuration and
devices to help users
understand

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The function from left to right is: New, Save, Open, AddChannel, DelChannel, AddNode, DelNode, AddCmd,
DelCmd, Upload, Download, AutoMap, Conflict, Export, Memory, Diagnose, Debug and Mode Switch.
GT200-HT-MT doesn't support function of "Memory", "Diagnose", "Debug" and "Mode switch"
temporarily.
New: Create a new configuration file
Save:Save the configuration file
Open: Open the configuration file
AddChannel: This function can't be used temporarily
DelChannel: This function can't be used temporarily
AddNode: Add a HART slave node
DelNode: Delete a HART slave node
AddCmd: Add a HART command
DelCmd: Delete a HART command

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Upload: Read the configuration information from the module and shown in the software
Download: Download the configuration file to the gateway
AutoMap: Used to automatically calculate the mapped memory address without confliction by each
command
Conflict: To check whether there are some conflicts with configured commands in the gateway memory
data buffer
Export: Output current configuration to the local hard disk and saved as Excel spreadsheet form
Memory: Show the data exchange situation inside of the gateway. GT200-HT-MT doesn't support this
function temporarily.
Diagnose: through this function could analyze operating condition of fieldbus device; also it can finish
some certain analysis. GT200-HT-MT doesn't support this function temporarily.
Debug: through this function could send any request frame to Hart fieldbus and show the response
information received in HART, convenient to debug. GT200-HT-MT doesn't support this function temporarily.
Mode Switch: Specify that the operation of the gateway is debugging or configuring. GT200-HT-MT

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doesn't support this function temporarily.
4.2 Software Functional Specifications
4.2.1 Configure the Fieldbus
Click the "Fieldbus" in the tree view on the left, select "Modbus TCP" in the "Mode select" in the
configuring plate on the right and then click enter to confirm. It is shown below:
Here user can configure some parameters:
IP setting mode: Static configuration, BOOTP, DHCP optional;
IP address: Set the IP address of GT200-HT-MT;
Subnet mask: Set the subnet mask of device;
Gateway address: Set the gateway address of device;
DNS1: Default 0;
DNS2: Default 0;
4.2.2Configure the HART Fieldbus
4.2.2.1 Set the Parameters of HART Channel
Click the "HartChannel0" in the tree view, the configuration plate will be shown in the right place: