ICPDAS HRT-710, HRT-310 User Manual

User Manual

Version 1.31 July 2010

HRT-710 HRT-310

Written by Peter Ho

Edited by Julia Wang

Table of Contents

1. Introduction .........................................................................................................................6

1.1 Features..........................................................................................................................7

1.2 Modbus Function Code Support .....................................................................................8

1.3 Specifications..................................................................................................................8

2. Hardware............................................................................................................................10

2.1 Block Diagram............................................................................................................... 10

2.2 Pin Assignment .............................................................................................................10

2.3 Wiring............................................................................................................................13

2.3.1 RS-232 Wiring ........................................................................................................13

2.3.2 RS-485 Wiring ........................................................................................................13

2.3.3 RS-422 Wiring ........................................................................................................14

2.3.4 HART Wiring........................................................................................................... 14

2.4 LED indicator ................................................................................................................18

2.5 DIP Switch ....................................................................................................................19

2.5.1 The default values in the “Default” mode................................................................20

2.6 Jumper .......................................................................................................................... 21

2.7 Module Loop Power Wiring (HRT-310) ......................................................................... 22

3. HART Introduction ............................................................................................................23

3.1 Analog and Digital signal............................................................................................... 23

3.2 Network topology ..........................................................................................................24

3.3 HART Frame.................................................................................................................26

3.3.1 Preamble ................................................................................................................26

3.3.2 Delimiter .................................................................................................................26

3.3.3 Address ..................................................................................................................26

3.3.4 Command ............................................................................................................... 26

3.3.5 Byte Count..............................................................................................................27

3.3.6 Response Codes .................................................................................................... 27

3.3.7 Data........................................................................................................................28

3.3.8 Check Byte .............................................................................................................28

4. Modbus Communication ..................................................................................................29

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4.1 Module Execution Process............................................................................................ 29

4.2 Modbus / HART Mapping Table ....................................................................................30

4.3 Diagnostic Messages.................................................................................................... 37

4.4 Through Mode............................................................................................................... 38

4.5 Data Exchange Example............................................................................................... 39

5. HG_T ool Application.........................................................................................................42

5.1 Install .NET Compact Framework .................................................................................42

5.2 Install HG_Tool.............................................................................................................. 44

5.3 HG_Tool Utility ..............................................................................................................47

5.3.1 Traffic Light.............................................................................................................47

5.3.2 Connection Status ..................................................................................................47

5.3.3 Connection Control.................................................................................................48

5.3.4 Tools ....................................................................................................................... 48

5.3.4.1 Communication Settings......................................................................................... 48

5.3.4.2 Device Information.................................................................................................. 49

5.3.4.3 Device Configuration ..............................................................................................56

5.3.4.4 Default Output Data................................................................................................62

5.3.4.5 Address Map ..........................................................................................................63

5.3.4.6 Device Diagnostic...................................................................................................64

5.3.4.7 Through Mode ........................................................................................................65

5.3.4.8 Format Translation..................................................................................................66

5.3.4.9 About ...................................................................................................................... 67

5.4 Establish connection with module ................................................................................. 68

6. Troubleshooting................................................................................................................71

7. Dimensions........................................................................................................................72

8. FAQ.....................................................................................................................................

76

Q01 : How to add HART devices to HRT-710 ? ................................................................. 76

Q02 : How to make sure that HRT-710 gets the HART device data correctly ?.................81

Q03 : How to map HART device CMD(3) data directly to SCADA or HMI ? ......................84

Q04 : How to update the firmware of HRT-710 ? ...............................................................96

Q05 : How to read HART device CMD1 data with standard format by Modbus ? .............. 99

Q06 : How to read HART device CMD 3 data with standard format by Modbus ? ...........103

Q07 : How to know the connection status between HRT-710 and HART devices ? ........106

Q09 : How to integrate multiple HRT-710 in the same RS-485 ?..................................... 112

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Q10 : How to integrate HART comm. device with RS-232 hardware interface ? ............. 114

Q11 : How to add the HART Device-Specific command to HRT-710 ? ............................ 115

Q12 : How to set HART device address by HRT-710 utility ? .......................................... 118

Q13 : All kinds of HART network wiring ? ........................................................................121

Q14 : Apply the same settings to the other H

RT-710 rapidly ? ........................................124

Q15 : How to send HART command for writi

ng ? (Ex: CMD19)....................................... 126

Q16 : Integrate GT-540 to get HART device data via 3G ?..............................................130

Appendix A. HART Command...............................................................................................136

Appendix B. Command Format ............................................................................................142

Appendix C: Version History..............................................................................................143

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: service@icpdas.com . We guarantee to respond within 2 working days.

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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-710 / HRT-310 module is a Modbus to HART gateway. By using

this module, users can integrate their HART devices into Modbus network easily. The below

figure is the application of HRT-710 / HRT-310.

(Note : The below description of HRT-710 / HRT-310 will be HRT-7(3)10)

Figure 1: The application of HRT-710 / HRT-310

The below table are the difference between HRT-710 and HRT-310.

HRT-710 HRT-310

Din Rail Installation Horizontal Upright

HART Signal Standard

Enhanced send/receive signal

(For long distance comm.)

Loop Power No

Support

(module provides +30V output)

Built-In Resistor 250 Ohm (1/4W) 250 Ohm (1W)

[ Note ]

1. The software settings for HRT-710 and HRT-310 are all the same and HG_Tool can be used

for them.

The main features and specifications of HRT-7(3)10 are described as below.

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1.1 Features

 Hardware

 Support HART Short/Long frame.

 Support HART Burst mode.

 Allow two HART Masters.

 Support Modbus RTU and ASCII format.

 Support Modbus Slave / HART Master Mode.

 Support firmware update via Com Port. (FW_v1.2 and HW_v1.2)

 Support on-line replacement of HART devices. (FW_v1.5)

 Support acquire long frame address automatically (FW_v1.5)

 Isolated COM 1: RS-232/422/485.

 Provide LED indicators.

 Built-in Watchdog.

 DIN-Rail or Wall Mounting.

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1.2 Modbus Function Code Support

HRT-7(3)10 supports the following Modbus Function Code commands.

[ Table 1: Modbus Function Codes ]

FC Description

01 Read multiple coils status

02 Read multiple discrete inputs

03 Read multiple Holding registers

04 Read multiple input registers

05 Write single coil

06 Write single register

15 Force multiple coils

16 Write multiple registers

1.3 Specifications

[ UART Spec. ]

 COM: RS-232(3 wire) / RS-422 / RS-485

 HRT-710 Connector: 9-pin screwed terminal block

 HRT-310 Connector: 4-pin screwed terminal block

 Baud Rate: 1200 ~ 115200 bps

 Data Format:

[1] data bits : 7/8

[2] parity : None/Odd/Even [3] stop bit : 1/2

[ HART Spec. ]

 Channel number: 1

 Connector: 2-pin screwed terminal block

 Operates as a HART Master station and supports all HART commands

 Frame: Short or Long

 Network: Point to Point or Multi-drop

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 Max. 15 HART modules

 Max. 100 user commands and 32 default commands

[ Power Requirement ]

 Unregulated +10 ~ +30 VDC

 Power reverse protection, Over-Voltage brown-out protection

 HRT-710 Power consumption: 1.0 W

HRT-310 Power consumption: 3.5 W (Max.)

[ Module Spec. ]

 HRT-710 Dimensions: 72 mm x 121 mm x 35 mm (W x L x H)

HRT-310 Dimensions: 25 mm x 116 mm x 120 mm (W x L x H)

 Operating temperature: -25 ~ 75 ºC

 Storage temperature: -30 ~ 80 ºC

 Humidity: 5 ~ 95% RH, non-condensing

 LED Status Indicators (Table 2)

[ Table 2: LED status indicator ]

PWR LED Show module power status

ERR LED Show HART communication error status

RUN LED Show module operation status

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2. Hardware

2.1 Block Diagram

Figure 2: Block diagram

2.2 Pin Assignment

Figure 3.1: Pin assignment of HRT-710

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Top View Bottom View

Figure 3.2: Pin assignment of HRT-310

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[ Table 3: Screw terminal block ]

Name

HRT-710

HRT-310

Description

LP+ N/A 12 V+ of Loop Power (+30Vdc)

HART+ 1 11 Positive of HART

HART- 2 10 Negative of HART

+VS 9 23 V+ of Power Supply (+10 ~ +30 Vdc)

GND 10 24 GND of Power Supply

RXD 11 18 Receive Data of RS-232

TXD 12 17 Transmit Data of RS-232

GND 13 19 GND of RS-232

RX+ 14 15 Receive Data+ of RS-422

RX- 15 16 Receive Data- of RS-422

TX+ 16 13 Transmit Data+ of RS-422

TX- 17 14 Transmit Data- of RS-422

D+ 19 13 Data+ of RS-485

D- 20 14 Data- of RS-485

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2.3 Wiring

It is recommended to use only one serial port interface (RS232, RS422 or RS485) of the

HRT(3)-710 module at a time. The following section describes the necessary steps to connect

one of the three COM port types to a Modbus network.

2.3.1 RS-232 Wiring

The RS-232 port of the HRT-7(3)10 has only three pins. The wiring of the RS-232 device

with the RS-232 port of the HRT-7(3)10 is shown as Figure 4.

Figure 4: RS-232 wiring diagram

2.3.2 RS-485 Wiring

The RS-485 wiring is shown as Figure 5.

Figure 5: RS-485 wiring diagram

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2.3.3 RS-422 Wiring

The RS-422 wiring is shown as Figure 6.

Figure 6: RS-422 wiring diagram

2.3.4 HART Wiring

The HART bus wiring is divided into the below two types:

(1) “Point-to-Point” mode. (2) “Multi-drop” mode.

Fig 2.3.4-1 : “P2P” mode (Two-wired HART device, Module Internal Resistor)

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Fig 2.3.4-2 : “P2P” mode (Two-wired HART device, External Resistor)

Fig 2.3.4-3 : “P2P” mode (Four-wired HART device)

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Fig 2.3.4-4 : “Multi-drop” mode (Two-wired HART device)

Fig 2.3.4-5 : “Multi-drop” mode (Four-wired HART device)

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Fig 2.3.4-6 : “Multi-drop” mode (Two-wired and Four-w ired HART device)

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2.4 LED indicator

The HRT-7(3)10 provides three LEDs to indicate the module and the HART communication

status.

[ Table 4: LED status description ]

LED Name Status Description

ON Power Supply OK.

PWR

OFF Power Supply Failed.

Flash HART Comm. Error.

ERR

OFF HART Comm. OK

Flash

[ Flash per second ] Module in initial mode. [ Flash per half second ] Module received the burst frame from HART device.

ON Module in normal operation.

RUN

OFF Firmware has not been loaded yet.

Figure 11: HRT-710 / HRT-310 LED indicator

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2.5 DIP Switch

1. HRT-710 :

There is a DIP Switch on the backplane of the HRT-710, as shown in Figure 12.

(1) “Normal” :

[1] The user’s settings will be adapted in HRT-710.

[2] In normal operation, set the DIP Switch to the “Normal” position.

(2) “Default” :

[1] The system default settings will be adapted in HRT-710.

[2] When users forgot the settings of HRT-710 and can’t connect to HRT-710 successfully,

users can set the DIP Switch to the “Default” position and reset HRT-710. Then the

default settings (refer to section 2.5.1) of HRT-710 will be adapted.

Figure 12-1: DIP Switch of the HRT-710

2. HRT-310 :

There are 4 dip-switches on the HRT-310 and these functions are as below.

Item OFF ON

Loop PWR

Adapt the external power for HART loop (Default)

Adapt the Loop Power for HART loop (Wiring refer to section 2.7)

Resistor Disable HART loop resistor

Enable HART loop resistor (Default) (250 Ohm, 1W)

Default Adapt the user’s settings (Default)

Adapt the default settings. (Refer to section 2.5.1)

FW Update Firmware Operation (Default)

Firmware Update (Refer to the Q04 of FAQ)

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Figure 12-2: DIP Switches of the HRT-310

2.5.1 The default values in the “Default” mode.

[ System Default Value ]

Item Value

HART Cmd interval 1000 ms

HART Cmd timeout value 1000 ms

Auto. Polling Enabled

Retry count 3

[ Modbus Default Value ]

Item Value

Baud rate 115200 bps

Date bits 8 bits

Stop bits 1 bit

Parity None

Net ID (Modbus ID) 1

Protocol Modbus RTU Slave

Swap mode None

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2.6 Jumper

1. HRT-710 :

There is a Jumper (JP4) in the HRT-710 module shown as Figure 13. The jumper can provide

HART bus with 250Ω (1/4 W) resistor. When the pin 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 2.3.4 - HART connection for detail.

Figure 13: Jumper of the HRT-710

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2.7 Module Loop Power Wiring (HRT-310)

HRT-310 supports “Loop Power” function and it means HRT-310 can provide +30V via “LP+” pin.

The “Loop Power” wiring is as below.

(1) Connect the “LP+” (+30V) of HRT-310 to the “HART+” pin of HART device. (2) Connect the “H+” of HRT-310 to the “HART-” pin of HART device. (3) Turn the “dip-switch of Loop Power” in HRT-310 to “ON” position. (It will connect the “H-” of HRT-310 to the internal “LP-” of HRT-310.)

(Note: HRT-710 doesn’t support the Loop Power function.)

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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 (Figure 15).

Figure 14: FSK signal

Figure 15: Analog and digital signals

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3.2 Network topology

HART bus can operate in one of these two network configurations—point to point and multi-drop.

1. Point to Point Mode :

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.

Figure 16: “Point to Point” topology

2. Multi-drop Mode :

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 ]

1. The built-in resistor in HRT-710 is 250 Ohm with 1/4W. Therefore, HRT-710 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-710

(prevent to burn down) and use the external 250 Ohm resistor with 1W.

2. The built-in resistor in HRT-310 is 250 Ohm with 1W and it allows up to 15 HART devices

to be connected.

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Figure 17: “Multi-drop” topology

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3.3 HART Frame

The HART frame format is shown as below:

Figure 18: HART frame format

3.3.1 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.

3.3.2 Delimiter

This data can indicate the frame is long or short frame and the frame is master frame, slave

frame or burst frame.

3.3.3 Address

If the HART frame is short frame, the address field is only one byte. If it is long frame, the

address field is 5 bytes and include manufacturer ID, device type and device ID.

3.3.4 Command

The HART command set includes three classes shown as below.

(1) Universal Command

(2) Common-Practice Command

(3) Device-Specific Command

Command Number Command Class

0 Universal ‧ ‧ ‧ ‧ ‧ ‧ 30 Universal 31 Reserved

-----------------------------------------------------------------------

32 Common Practice

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‧ ‧ ‧ ‧ ‧ ‧ 127 Reserved

-------------------------------------------------------

128 Transmitters-Specific ‧ ‧ ‧ ‧ ‧ ‧ 253 Transmitters-Specific

------------------------------------------------------ 254 Reserved 255 Reserved

About the often used HART command, please refer to “Appendix A: HART command”.

3.3.5 Byte Count

It is the number of bytes between it and the check byte the end of the HART frame.

3.3.6 Response Codes

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.

[ First Byte ]

bit 7: 1 (communication error)

bit 6: Parity error

bit 5: Overrun error

bit 4: Framing error

bit 3: Checksum error

bit 2: 0(reserved)

bit 1: Rx buffer overflow

bit 0: Overflow (undefined)

[ bit 7=0 (Comm. OK) ; Bit 0~6: as an integer, not bit-mapped ]

0: No command-specific error

1: (undefined)

2: Invalid selection

3: Passed parameter too large

4: Passed parameter too small

5: Too few data bytes received

6: Device-specific command error (rarely used)

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7: In write-protect mode

8-15: Multiple meanings

16: Access restricted

28: Multiple meanings

32: Device is busy

64: Command not implemented

[ Second Byte - Field device status ]

bit 7: Field device malfunction

bit 6: Configuration changed

bit 5: Cold start

bit 4: More status available

bit 3: Analog output current fixed

bit 2: Analog output saturated

bit 1: Non-primary variable out of limits

bit 0: Primary variable out of limits.

[ Note ]

When HART communication error is reported in the first byte, the second byte will be 0.

3.3.7 Data

The contents of the data are decided by HART command number.

3.3.8 Check Byte

Every HART frame has a check byte at the last data byte. HART device can detect error

frame by this byte.

.

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4. Modbus Communication

4.1 Module Execution Process

When HRT-7(3)10 module power on, it will enter the “Initial” mode first and then enter the

“Operation” mode.

(1) When HRT-7(3)10 runs under “Initial” mode, it will execute all initial commands and the

“RUN” LED will flash.

(2) When HRT-7(3)10 runs under “Operation” mode, it will execute all polling commands

automatically and the “RUN” LED will be always on.

[ Note ]

The “Auto Polling” function must be set to “Enable” and all polling command will be executed

automatically.

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4.2 Modbus / HART Mapping Table

Users can access the HART device by using these Modbus address defined by HRT-7(3)10

module. These Modbus address can be divided into two parts as below.

(1) Input Data Area (FC04)

(2) Output Data Area (FC06, 16)

[ Note ]

The meaning of every Modbus address in the below table is according to the setting of SWAP

Mode to be None. If the setting of SWAP Mode is Byte or WORD or W&B, then the meaning of

every Modbus address in the below table will be moved one byte or word address.

[ Table 5: Modbus / HART Mapping Table ]

INPUT DATA AREA

MB_Addr

(HEX)

MB_Addr (Decimal)

Description

[ User CMD Data ]

0~1F3 0~499 “User CMD“ data

[ Module State Data ]

1F4 500L Module state machine

1F4 500H Module request command count

1F5 501L Module receive command count

1F5 501H Module receive error command count

1F6 502L Module error status

1F6 502H Module error command index

1F7~1F9 503~505 Reserved

[ Default CMD(0) Data ]

1FA~200 506~512 “Default CMD(0)” input data of “Module 0”

201~207 513~519 “Default CMD(0)” input data of “Module 1”

208~20E 520~526 “Default CMD(0)” input data of “Module 2”

20F~215 527~533 “Default CMD(0)” input data of “Module 3”

216~21C 534~540 “Default CMD(0)” input data of “Module 4”

21D~223 541~547 “Default CMD(0)” input data of “Module 5”

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ICPDAS HRT-710, HRT-310 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual