User Manual
3-channel HART/Modbus TCP Gateway
GT200-3HT-MT
WWW.SSTCOMM.COM
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In the above example, click “Byte5-8” will show the Primary Variable in the left bottom area. Other column
have the relevant explanation.
First to explain the “Mapped Address”:
Bytes: response bytes of “Response Data”;
Memory Address: assigned memory address which this byte is located in memory buffer area of
GT200-3HT-MT;
Modbus register address: the relevant Modbus register address of “Memory Address”; Note: this address is
not a single address, that is the same memory area which it occupied.
Byte swap: there are two options, “no swap” and “register swap”, swap option is only valid to float type data.
When using “no swap”, the byte order is byte1, byte2, byte3 and byte4. After using “register swap”, the byte order
will be byte3, byte4, byte1 and byte2. For example, the original data is 0x12345678, it will be 0x56781234 after
using “register swap”.
Choose “Byte0-3” and “Byte5-8”, click auto mapping, as shown below:
Close the dialog box, download the configuration into GT200-3HT-MT.
Others are the same with “Basic Mode”.