ICP DAS USA HRT-711 User manual

User Manual
Version 1.12
2022/04/19
HRT-711
Written by Edward Fang
Edited by Julia Wang

HRT-711 User Manual Version 1.12 Page：2
Copyright © 2017 ICP DAS Co., Ltd. All Rights Reserved E-mail: [email protected]
Table of Contents
1. Introduction .........................................................................................................................6
1.1 Features..........................................................................................................................7
1.2 Specification....................................................................................................................8
2. Hardware..............................................................................................................................9
2.1 Block Diagram.................................................................................................................9
2.2 Pin Assignment .............................................................................................................10
2.3 Wiring............................................................................................................................11
2.3.1 RS-232...................................................................................................................11
2.3.2 HART......................................................................................................................12
2.3.3 Ethernet..................................................................................................................13
2.4 LED Indicators ..............................................................................................................14
2.5 DIP Switch ....................................................................................................................15
2.6 Jumpers........................................................................................................................16
2.7 Mounting.......................................................................................................................16
3. HART Introduction ............................................................................................................17
3.1 Analog and Digital Signal..............................................................................................17
3.2 Topology........................................................................................................................18
3.3 HART Frame.................................................................................................................20
4. Modbus Communication ..................................................................................................22
4.1 Module Execution Process............................................................................................22
4.2 Modbus / HART Mapping Table ....................................................................................22
4.2.1 Input Data Area－User CMD Data..........................................................................22
4.2.2 Input Data Area－Module State Data......................................................................22
4.2.3 Input Data Area－Default CMD 0 Data...................................................................24
4.2.4 Input Data Area－Default CMD 3 Normal Format Data ..........................................24

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4.2.5 Input Data Area－Module Error Record Data .........................................................25
4.2.6 Input Data Area－Default CMD 0&3 Status Data....................................................26
4.2.7 Input Data Area－User CMD Error Status ..............................................................26
4.2.8 Input Data Area－Module Hardware Data ..............................................................27
4.2.9 Input Data Area－Through Mode Data ...................................................................27
4.2.10 Input Data Area－Default CMD 3 Simple Format Data...........................................27
4.2.11 Output Data Area....................................................................................................28
4.3 Through Mode...............................................................................................................30
5. Utility..................................................................................................................................31
5.1 .NET Framework Installation.........................................................................................31
5.2 Install HRT-711 Utility....................................................................................................33
5.3 Introduction of Utility .....................................................................................................36
5.4 Configuration of Ethernet..............................................................................................36
5.5 Configuration of Modbus to HART ................................................................................37
5.5.1 Traffic Light.............................................................................................................38
5.5.2 Current Config Module Name.................................................................................38
5.5.3 Connection Status ..................................................................................................38
5.5.4 Connection Control.................................................................................................38
5.5.5 Tools.......................................................................................................................38
6. FAQ.....................................................................................................................................53
Q01 : How to add HART devices to HRT-711 ?.................................................................53
Q02 : How to make sure that HRT-711 gets the HART device data correctly ? .................58
Q03 : How to map HART device CMD(3) data directly to SCADA or HMI ? ......................61
Q04 : How to update the firmware of HRT-711 ?...............................................................69
Q05 : How to read HART device command 1 data with standard format by Modbus ? .....74
Q06 : How to read HART device command 3 data with standard format by Modbus ? .....77
Q07 : How to know the connection status between HRT-711 and HART devices ?...........80
Q08 : How to integrateActive and Passive HART devices in multi-drop network ?...........83

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Q09 : How to integrate multiple HRT-711 modules in the same project ?..........................84
Q10 : How to integrate HART communication device with RS-232 hardware interface ?..85
Q11 : How to add the HART Device-Specific command to HRT-711 ? ..............................86
Q12 : How to set HART device address by HRT-711 utility？............................................89
Q13 : All kinds of HART network wiring ? ..........................................................................92
Q14 : Apply the same settings to the other HRT-711 rapidly ?...........................................95
Q15 : How to send HART command for writing ? (Ex: CMD19).........................................97
Q17 : How to get HART command 48 information ?........................................................100
Q18 : How to send HART “Burst Mode” CMD? (CMD108/109) .......................................103
Q19 : How to reset totalizer value by sending Device-Specific command? .....................108
Q20 : How to read total-flow data from flow-meter?.........................................................110
Q21 : HART communication update period calculation and adjustment..........................112
Q22 : Integrate HART communication to traditional AI structure......................................114
Q23 : HART Multi-drop mode precautions.......................................................................115
Q24 : HART communication distance issues...................................................................117
Q25：Using Through Mode of HG_Tool to Stop Burst Mode of HART Device................120
Q26：How to use the In_Offset field of the UserCMD ?..................................................121
Q27：How to use “Listen Only” function to get HART data?...........................................126
Q28：I can't set it through RS-232, and I want to set HRT-711 through Ethernet. How can i
do?.......................................................................................................................131
Q29：If I want to do Modbus TCP communication to port 502 via Ethernet, what is the
maximum number of communications supported at the same time?....................132
Q101 : The whole configuration process of HRT-711 ?....................................................133
Appendix A HART Command................................................................................................137
Appendix B Command Format .............................................................................................143
Appendix C. Revision History...............................................................................................144

HRT-711 User Manual Version 1.12 Page：5
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Important Information
Warranty
All products manufactured by ICP DAS are under warranty regarding
defective materials for a period of one year, beginning from the date of
delivery to the original purchaser.
Warning
ICP DAS assumes no liability for any damage resulting from the use of this
product.ICP DAS reserves the right to change this manual at any time
without notice. The information furnished by ICP DAS is believed to be
accurate and reliable. However, no responsibility is assumed by ICP DAS
for its use, not for any infringements of patents or other rights of third parties
resulting from its use.
Copyright
Copyright @ 2017 by ICP DAS Co., Ltd. All rights are reserved.
Trademark
Names are used for identification purpose only and may be registered
trademarks of their respective companies.
Contact us
If you encounter any problems while operating this device, feel free to contact us
via mail at: [email protected] . We guarantee to respond within 2 working days.

HRT-711 User Manual Version 1.12 Page：6
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1. Introduction
Modbus and HART are two kinds of famous protocols and used wildly in the fields of factory and
process automation. The HRT-711 module is a Modbus/TCP and Modbus/UDP to HART gateway.
By using this module, users can integrate their HART devices into Modbus network easily. The
below figure 1 shows an application example for the HRT-711 module.

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1.1 Features
Support HART Short/Long frame
Support HART Burst mode
Allow two HART Masters
Support Modbus/TCP and Modbus/UDP format
Support Modbus Slave / HART Master Mode
Support Firmware Update via Com Port
Support On-line Replacement of HART Devices
Support Acquire Long Frame Address Automatically
Provide LED indicators
Built-in Watchdog
DIN-Rail or Wall Mounting

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1.2 Specification
Item
Specification
Com Port
RS-232(3 wire)
Screwed terminal block
Fixed baud rate 115200 bps
HART
1 HART Modem
Screwed terminal block
Operates as a HART Master station and supports all HART commands
Support Short and Long Frame
Support Point to Point or Multi-drop
Max. 15 HART modules
Max. 100 user commands and 32 default commands
Ethernet
1 x 10/100Base-TX Ethernet Controller
RJ-45
Auto Negotiation
Auto MDIX
Power
+10 ~ +30 VDC
Power reverse protection and Over-Voltage brown-out protection
Power Consumption：2 W
Module
Dimensions: 72 mm x 121 mm x 35 mm (W x L x H)
Operating temperature: -25 ~ 75 ºC
Storage temperature: -30 ~ 85 ºC
Humidity: 5 ~ 95% RH, non-condensing
3 x LED indicators
ETH LED
Network Status
HART LED
HART Status
ERR LED
Error

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2. Hardware
2.1 Block Diagram

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2.2 Pin Assignment
Pin Name
Group
Description
HART+
HART
Positive of HART
HART-
Negative of HART
+VS
Power Source
V+ of Power Supply(+10 ~ +30 VDC)
GND
GND of Power Supply
TXD
Configuration
Transmit Data of RS-232
RXD
Receive Data of RS-232
GND
GND of RS-232
E1
Modbus/TCP
Modbus/UDP
Ethernet RJ45 connector for Modbus/TCP and
Modbus/UDP

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2.3 Wiring
In this section, this user’s manual will introduce the wiring for each interface.
2.3.1 RS-232
The RS-232 port of HRT-711 uses a 3-wire communication interface. It needs a unique
cable, CA-0910, to wire from screwed terminal block to D-Sub 9pin connector. Users can
choose between using CA-0910 for RS-232 wiring or directly connecting to D-Sub. 2.3.1.1
and 2.3.1.2 are the wiring for the RS-232 interface.
Without CA-0910
When users choose not to use CA-0910 for RS-232 wiring, users have to have a D-Sub
9pin connector to wire. The following figure is the wiring diagram for wiring without
CA-0910.
With CA-0910
It is recommended that users use CA-0910 for wiring the RS-232 port. The wiring of
CA-0910 and HRT-711 is shown as below.

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2.3.2 HART
The wiring of HART bus can be devided into two types. One is loop power (Passive Loop),
and the other is external power (Active Loop). The following figures show the wiring for the
HART bus.

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2.3.3 Ethernet
The wiring for Ethernet is directly connecting your RJ-45 Ethernet cable to the RJ-45 port on
the HRT-711.

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2.4 LED Indicators
The HRT-711 provides three LED indicators to indicate the module status. The descriptions are
shown as follow.
LED
Status
Description
ETH
Blink
Blink every 0.2 second：Receiving Ethernet packet
Blink every 3 second：The network function is normal
Off
Ethernet Error
HART
Blink
Blink every 1 second：
The HRT-711 is in the initialing procedure
Blink every 0.5 second：
The HRT-711 is handling the burst frame sent from HART
device
Solid
The HRT-711 is in the normal status
Off
Firmware is not loaded
ERR
Blink
HART communication error
Off
HART communication is good

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2.5 DIP Switch
The DIP switch is used for switching the mode between Init and Normal. The switch is located on
the back of the module. On the init side, the module can be configured through Utility. On the
normal side, the module is a gateway between HART and Modbus/TCP, Modbus/UDP protocol.
Users have to power cycle the module when switch to different mode.

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2.6 Jumpers
There are three jumpers for enabling/disabling function. The description for each jumper is
shown as following table.
Jumper
Description
JP2
(1) Position 1 & 2 : Enable hardware WDT. (Default setting)
(2) Position 2 & 3 : Firmware Update Mode. (JP3 should be also in the 2 & 3)
JP3
(1) Position 1 & 2 : Firmware Operation Mode. (Default setting)
(2) Position 2 & 3 : Firmware Update Mode. (JP2 should be also in the 2 & 3)
=> The detailed steps of Firmware Update, please refer to the Q04 of FAQ.
JP4
The jumper can provide HART bus with 250 Ω(1/4W) resistor.When thepin 1&2 of
JP4 is closed, the resistor will connect to HART bus. When the pin 2&3 of JP4 is
closed or JP4 without jumper connected, it will disconnect the resistor from HART
bus. By default, the pin1&2 of JP4 is closed. Please refer to section 2.3.2.
2.7 Mounting

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3. HART Introduction
3.1 Analog and Digital Signal
The HART communication protocol is based on the Bell 202 telephone communication standard
and operates using the frequency shift keying (FSK, Figure 14) principle. The digital signal is
made up of two frequencies - 1,200 Hz and 2,200 Hz representing bits 1 and 0, respectively.
Sine waves of these two frequencies are superimposed on the direct current (dc) analog signal
cables to provide simultaneous analog and digital communications.

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3.2 Topology
HART bus can operate in one of the two network configurartions, point to point and multi-drop.
Point to Point
In point to point mode, the analog signal is used to communicate one process variable and the
digital signal gives access to secondary variables and other data that can be used for
operations, commissioning, maintenance and diagnostic purposes. Only one HART slave
device can exist in HART bus and the polling address must be zero.
Multi-drop
In multi-drop mode, all process values are transmitted digitally. The polling address of all field
devices must be bigger than 0 and between 1 ~ 15. The current through each device is fixed to
a minimum value (typically 4 mA). The maximum HART device number in HART bus is up to
15.
NOTE：The built-in resistor in HRT-711 is 250 Ohm with 1/4W. Therefore, HRT-711 supports to
connect the maximum 7 HART devices simultaneously. If the HART devices in multi-drop
mode are more than 7, then users need to disconnect the built-in resistor in HRT-711 (prevent
to burn down) and use an external 250 Ohm resistor with 1W.

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3.3 HART Frame
The HART frame format is shown as below.
Field
Description
Preamble
All frames transmitted by HART master or slave devices are preceded by a specified
number of "0xFF" characters and they are called the preamble. The number of
preamble can’t be less than 5 and more than 20
Delimiter
This data can indicate the frame is long or short frame and the frame is master frame,
slave frame or burst frame.
Address
If the HART frame is short frame, the address field is only one byte. If it is long frame,
the address field are 5 bytes and include manufacturer ID, device type and device ID.
Command
The HART command set can be devided into Universal, Common Practice and
Device-Speific class. These three class shown as below：
Command Number
Command Class
Universal
0~30, 31 is reserved
Common Practice
32~126, 127 is reserved
Device-Specific
128~253
Reserved
254 & 255
Please refer to Appendix A for more detail of HART command
Byte Count
It is the number of bytes between it and the check byte the end of the HART frame.
Response
Code
It includes two bytes of status. These bytes convey three types of information:
Communication errors, Command response problems and Field device status. They
are shown as below.
Response Code Data
Byte1
Byte0
NOTE：When first byte shows the communication error, the value of the second byte
is 0
Byte 0 represents the communication error or response code
This byte is used for error status when Bit7 is 1. The status bits are shown as follow
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0