4.5 Data Exchange Example
In this example, use ICP DAS MB/RTU master tool
(Download from: (http://ftp.icpdas.com.tw/pub/cd/8000cd/napdos/modbus/modbus_utility/) to
send the HART command 0 and receives the hardware information of HART slave via the
HRT-7(3)10 gateway.
Step 1: Please connect the PC
、
HRT-7(3)10 and HART Slave device.
Figure 21: Hardware connection
Step 2: Set the module to the default settings.
(1)HRT-710: Set the DIP switch in the backplane of HRT-710 to the “default” position.
(2)HRT-310: Set the “Default” dip switch to be “ON” position.
Please reboot the module and the default settings are as below.
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
Step 3: Waiting for the “RUN” LED of HRT-7(3)10 to be always on.
Step 4: Run the MB/RTU tool (like Figure 22) on PC.
(1) Set the PC COM port number
(2) Set the baud rate to 115200
(3) Set the Line control to “N,8,1”
(4) Click “Open” button
HRT-710 / HRT-310 User Manual
Version 1.31
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