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Modbus RTU to HART Gateway, communicable over RS-232, RS-485, and RS-422 protocols. Supports operating temperatures of -25°C ~ +75°C (-13°F ~ 167°F) and has a din rail mount. Replacement unit for I-87H17W.

HRT-710

Modbus RTU to HART Gateway, communicable over RS-232, RS-485, and RS-422 protocols. Supports operating temperatures of -25°C ~ +75°C (-13°F ~ 167°F) and has a din rail mount. Replacement unit for I-87H17W.

  Price:  $649.00  

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Features

Application Image HRT-710HRT-710 Modbus RTU to HART Gateway is allows a Modbus master to access HART devices on HART networks. HART devices commonly used with HRT-710 are transmitters, actuators, flow meters and instrumentation equipment.   HRT-710 comes with a software utility software for fast and easy configuration.  With the HART-710 HART to Modbus converter, you can interface their HART devices with Modbus networks and convert HART to Modbus very easily.

Modbus is a widely used protocol that was developed with industrial applications in mind. HART protocol was developed for measurement applications. The HART-710 HART to Modbus gateway allows Modbus devices to be incorporated into HART networks.

The HART (Highway Addressable Remote Transducer) protocol uses the Bell 202 Frequency Shift Keying (FSK) standard to superimpose digital communication signals on the 4-20 mA loop current shown as below figure. HART communicates at 1200 bps without interrupting and interference with the 4-20mA signal and allows a host application (master) to send/receive digital information from a smart field device. The 4-20mA signal communicates the primary measured value - the fastest and most reliable industry standard. The digital signal can be used for additional device information including device status, diagnostics, additional measured or calculated values, etc. Therefore, the HART communication including analog and digital information provides a low-cost and very robust complete field communication solution that is easy to use and configure. HART is a master/slave protocol which provides for up to two masters (primary and secondary) and the secondary master such as handheld can be used to monitor/control the information of HART bus. HART can be used in various modes such as point-to-point or multi-drop for communicating information to/from smart field instruments and central control or monitoring systems. The following are the description of two main HART operation modes.

Utility

  • 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 field communication
  • Compatibility with standard 4-20mA wiring
  • Simultaneous transmission of digital data
  • Risk reduction through a highly accurate and robust protocol
  • Increase Plant Availability
  • Reduce Maintenance Costs
  • Improve regulatory compliance
  • Support HART Short/Long frame
  • Support HART Burst mode
  • Allow two HART Masters
  • Support Modbus RTU and ASCII format
  • Support Modbus Slave mode
  • Isolated COM 1: RS-232/422/485
  • Provide LED indicators
  • Built-in Watchdog
  • Mountable on DIN Rail

 

Applications

  • Industrial Automation
  • Factory Automation
  • Process Automation

 

Utility

  • Read/Write HART device by HART command
  • Provide diagnostic Information
  • Read/Write module configuration of the HART-710
  • Show Modbus address of HART command

Specifications

Modbus Support

Only the following Modbus commands are supported by the gateway.

Code
Name
Description
01
Read Coil Status
Read the ON/OFF status of discrete outputs in the slave
02
Read Input Status
Read the ON/OFF status of discrete inputs in the slave
03
Read Holding Registers
Read the binary contents of holding registers in the slave
04
Read Input Registers
Read the binary contents of input registers in the slave
05
Force Single Coil
Write a single output to either ON or OFF in the slave
06
Preset Single Register
Write an integer value into a single register in the slave
15
Force Multi. Coils
Write each coil in the sequence of coils to either ON or OFF in the slave
16
Preset Multi. Registers
Write a block of contiguous registers in the slave

 

Hardware

Hardware
CPU
32 bit, 100 MHz or compatible
Flash
512 KB
SRAM
64 KB
EEPROM
16 KB
WDT(Watchdog)
Watchdog IC
ESD Protection
4 kV class A
UART Interface
COM 1
RS-232(3 wires)/RS-422/RS-485
COM 1 Connector
9-pin screwed terminal block
Baud Rate (bps)
Up to 115200
Protocol
Modbus RTU / Modbus ASCII
HART Interface
HART Interface
2-pin screwed terminal block
HART Channel
1
Power
Power supply
Unregulated +10 ~ +30 VDC
Protection
Power reverse polarity protection, Over-voltage brown-out protection
Power Consumption
1 W
Mechanism
Installation
DIN-Rail or Wall Mounting
Dimensions
72mm x 33mm x 122mm (W x L x H)
Environment
Operating Temp.
-25 ℃ ~ +75 ℃
Storage Temp.
-30 ℃ ~ +85 ℃
Humidity
5% ~ 95%

References and Support

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