Industrial Gateway


  • Support HART Short/Long frame
  • Support HART Burst mode
  • Allow two HART Masters
  • Working in point-to-point or multi-drop HART mode
  • Connecting up to 15 HART modules
  • Support Modbus RTU and ASCII format
  • Support Modbus Slave 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


The HRT-310 Gateway is specially designed for the master device of HART protocol. It allows the Modbus master to access the HART devices. These HART devices may be a transmitter, an actuator and so forth. In addition, we also provide the software utility, HG_Tool, for module configuration and HART device diagnosis. By using these modules, users can integrate their HART devices into Modbus network easily and quickly.

Model HRT-710 HRT-310
Loop Power No Support
(module provides +30V output)


Industrial Automation

Factory Automation

Process Automation


HRT-310, a HART master to Modbus slave gateway, is applied to integrate the information from these HART flow meters into the customer's HMI system. Through the HRT-310, all of the HART flow meters will be regarded as Modbus slave devices and the HMI system can use the built-in Modbus RTU communication to access these HART flow meters easily.

More than 250 HART device information needs to be integrated to surveillance center. In PC side, uses 3 pieces of PCI cards (VXC-148U, for 24 channels RS-485 expansion). I-2542A and I-2542B (RS-485 to Fiber) are used in every RS-485 channel to extend RS-485 communication distance. There are about 20 pieces of HRT-310 modules used in every RS-485 channel with the different station ID. Through the structure, SCADA or HMI system can integrate all HART device information via Modbus protocol easily and quickly.


 COM Ports
 Ports RS-232(3 wires) / RS-422 / RS-485
 Baud Rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
 Protocol Modbus RTU / Modbus ASCII


 Ports 1
 Device 2-wired or 4-wired HART devices
 Topology Point to Point or Multi-Drop
 Data Only Digital Data
 Frame Type Short and Long Frame
 Burst Mode Supported
 Max. HART Device 15
 Loop Resistor 250 Ω (1W) by Dip-Switch
 Isolation UL1577 Spec.
 Protocol 2-pin screwed terminal block
 Loop Power Yes (module provides +30V output)


 Reverse Polarity Protection Power reverse polarity protection, Over-voltage brown-out protection
 Input Range Unregulated +10 ~ +30 VDC
 Consumption 3.5W (Max.)


 Dimensions (mm) 25 x 116 x 120 (W x L x H)
 Installation DIN-Rail


 Operating Temperature -25 ~ +75 °C (-13 to 167 ℉)
 Storage Temperature -30 ~ +80 °C (-22 to 176 ℉)
 Humidity 10% ~ 90% RH, Non-condensing



 HRT-310     CR  Modbus RTU/ASCII to HART Gateway (RoHS) 1