HART Products
7.1. HART Introduction & Products P7-1-1
HART Introduction & Products
7.1. Overview
HART Field Communications Protocol extends this 4 ~ 20 mA standard to enhance
communication with smart field instruments. The protocol preserves the 4 ~ 20 mA
signal and enables two-way digital communications to occur without disturbing the
integrity of the 4 ~ 20 mA signal. Unlike other communication technologies, the
HART protocol can maintain compatibility with existing 4 ~ 20 mA systems with a
uniquely backward compatible solution. Here are two main operational modes of HART
instruments:
analog/digital mode, and multi-drop mode.
h Peer-to-Peer mode
The analog and digital signals can be communicated in this mode. Here the digital signals are overlaid on the 4 ~ 20 mA loop current.
Both the 4 ~ 20 mA current and the digital signal are valid output values from the instrument. The polling address of the instrument is
set to "0". Only one instrument can be put on each instrument cable signal pair.
h Multi-drop mode (digital)
In this mode, only the digital signals are used. The analog loop current is ¿xed at 4 mA. In multi-drop mode it is possible to have up to
15 instruments on one signal cable. The polling addresses of the instruments will be in the range 1 ~ 15. Each meter needs to have a
unique address.
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h HART Features
HART Products
Relatively easy to understand and use, the HART protocol provides access to the wealth of additional information (variables,
diagnostics, calibration, etc.)
HART is a no risk solution for enhanced ¿eld communication
Compatibility with standard 4 ~ 20 mA wiring
Simultaneous transmission of digital data
Risk reduction through a highly accurate and robust protocol
Increase plant Availability
Improve regulatory compliance
ł HART Series Selection Guide
Product Interface Description
I-7567 HART master <--> USB USB to HART master converter
HART Converters
I-7570 HART master <--> RS-232/RS485/RS422 HART to RS-232/RS-485/RS-422 converter
HART-710 HART master <--> RS-232/RS485/RS422 HART master to Modbus RTU/ASCII slave gateway
HART Gateways
GW-7557 HART master <--> PROFIBUS DP slave PROFIBUS slave to HART master gateway
I-87H17W HART master, 8 current inputs 8-ch current input HART master module
HART Modules
I-87H24W HART master, 4 current outputs 4-ch current output HART master module
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Remote I/O Modules and I/O Expansion Units
ł HART Converters
USB to HART Master Converter
I-7567 CR The USB interface is comprehensive applied in PCs and notebooks. In order to touch the users' requirements more
closely, the I-7567 is presented. It is a USB to HART converter specially designed as the master device of HART
protocol. Through it, users can easily to access the HART network via USB port which is implemented as a virtual
COM port on PCs or notebooks. Because the I-7567 is powered by the USB interface, the external power is not
necessary. Moreover, the I-7567 provides the Utility tool which is helpful for diagnosing and con¿guring the HART
network. If you would like to develop a HART network, the I-7567 will be a good tool to reduce your setup costs.
Utility Features
Features Easily transmit/receive HART command for testing
Provide HART device diagnostic information
Support HART Short/Long frame
Provide module parameter con¿guration
Support HART Burst mode
Allow two HART masters
Support the in point-to-point or multi-drop HART network mode
Allow to connect with max. 15 HART modules
Provide selectable 250 ƻ load resistor
Compatible with USB 1.1 and 2.0 standards
Powered by USB (external power is not necessary)
Support ¿rmware update via USB
Provide utility tool for module con¿guration
Built-in watchdog
4 kV ESD protection
3000 VDC intra-module isolation
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HART to RS-232/RS-485/RS-422 Converter
I-7570 CR The I-7570 is a Serial to HART converter specially designed as the master device of HART protocol. By using I-7570, 1
the HART devices, such transmitters, actuators, gauges, meters, and the current output devices, can be easily
integrated into the HMI/PLC/PC devices via serial port which may be RS-232/RS-422/RS-485 interface. In order to
HART Products
diagnose and con¿gure the HART network more easily, the I-7570 Utility tool with friendly con¿guration interface
is given. It is helpful for diagnosing and con¿guring the HART network. Through it, you can build a HART network
more easily and quickly.
Utility Features
Easily transmit/receive HART command for testing
Provide HART device diagnostic information
Features Provide module parameter con¿guration
Support HART Short/Long frame
Support HART Burst mode
Allow two HART masters
Support the in point-to-point or multi-drop HART network mode
Allow to connect with max. 15 HART modules
Provide selectable 250 ƻ load resistor
Isolated COM 1: 3-wire RS-232/RS-422/RS-485
Support ¿rmware update via COM1
Provide utility tool for module con¿guration
Provide PWR/RUN/ERR LED indicators
Built-in watchdog
4 kV ESD protection
Mountable on DIN Rail
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HART Introduction & Products
ł HART Gateways
HART Master to Modbus RTU/ASCII Slave Gateway PROFIBUS Slave to HART Master Gateway
HART-710 CR The HART-710 is a HART master to Modbus GW-7557 CR The GW-7557 is designed for the slave
slave gateway. It provides an economic device of PROFIBUS DP protocol. It allows
solution for Modbus master device to access the PROFIBUS master to access the HART
the HART slave devices. In order to diagnose slave devices. These HART devices may be
and configure the HART network more a transmitter, an actuator, a current output
easily, the HART-710 Utility tool with friendly device and so forth. Owing to the GW-7557,
con¿guration interface is given. you can put the HART slave devices into
PROFIBUS network very easily.
Support HART Short/Long frame Protocol: PROFIBUS DP-V0 slave
Support HART Burst mode Detect transmission rate (9.6 to 12000 kbps)
Allow two HART masters on PROFIBUS automatically
Support the in point-to-point or multi-drop HART network mode 240 bytes max. input data length
Allow to connect with max. 15 HART modules 240 bytes max. output data length
Support Modbus RTU and ASCII format PROFIBUS address 0 ~ 126 set by DIP switch
Modbus Function Code: 01, 02, 03, 04, 05, 06, 15 and 16 Support HART mode: point-to-point/multi-drop
Isolated COM 1: 3-wire RS-232/RS-422/RS-485 Support 4 HART channels, each for max. 15 HART modules
Built-in watchdog Support HART Short/Long frame
Mountable on DIN Rail Network isolation protection: 2500 Vrms high speed iCoupler
3000 VDC isolation
protection on
PROFIBUS side
7 ł HART Modules
1 8-ch Current Input HART Master Module 4-ch Current Output HART Master Module
I-87H17W CR The I-87H17W is an 8-ch HART analog I-87H24W CR The I-87H24W is a 4-ch HART analog
HART Products
input module. It can measure 4~20 mA output module. It can output 4~20 mA
current and act as a HART master, allowing current and be as a HART master, allowing
communication with HART field devices. communication with HART ¿eld devices. The
Users can measure current directly without I-87H24W supports DCON protocol defined
any external resistor. The I-87H17W adopts by ICP DAS, and can be used in WinPAC,
DCON protocol and can be used in WinPAC, ViewPAC, XPAC, LinPAC and iPAC series PAC.
ViewPAC, XPAC, LinPAC and iPAC series PAC.
Support HART Short/Long frame Support HART Short/Long frame
Support HART Burst mode Support HART Burst mode
Allow two HART masters Allow two HART masters
Support the in point-to-point or multi-drop HART network mode Support the in point-to-point or multi-drop HART network mode
Allow to connect with max. 15 HART modules Allow to connect with max. 15 HART modules
Support 4 ~ 20 mA current input Support 4 ~ 20 mA current output
2-wire or 4-wire transmitters of HART 2-wire transmitters of HART
Support DCON protocol Support DCON protocol
Open wire detection Open wire detection
4 kV ESD protection, and 2500 VDC intra-module isolation 4 kV ESD protection, and 2500 VDC intra-module isolation
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