ICP DAS USA HRT-710 User Manual page 19

3.3.2 Delimiter
This data can indicate the frame is long or short frame and the
frame is master frame, slave frame or burst frame.
3.3.3 Address
If the HART frame is short frame, the address field is only one byte.
If it is long frame, the address field is 5 bytes and include manufacturer
ID, device type and device ID.
3.3.4 Command
The HART command set includes three classes shown as below.
(1) Universal Command
(2) Common-Practice Command
(3) Device-Specific Command
Command Number
0
‧
‧
‧
30
31
-------------------------------------------------------
32
‧
‧
‧
127
-------------------------------------------------------
128
‧
‧
‧
253
-------------------------------------------------------
254
255
About the often used HART command, please refer to ―Appendix A:
HART command‖.
HRT-710 User Manual (Version 1.24, June/2015)
Command Class
Universal
‧
‧
‧
Universal
Reserved
Common Practice
‧
‧
‧
Reserved
Transmitters-Specific
‧
‧
‧
Transmitters-Specific
Reserved
Reserved
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