Siemens SIMATIC 6DL1 136-6AA00-0PH1 - Explanation of the HART Commands; Universal HART Commands; General Purpose HART Commands

Description
The HART commands and their parameters are divided into three groups:
• Universal HART commands (Page 84)
• General purpose HART commands (Page 84)
• Device-speci󹪝c HART commands (Page 85)
8.3.3 Explanation of the HART commands
8.3.3.1 Universal HART commands
De󹪝nition
Universal commands must be supported by all manufacturers of HART 󹪝eld devices.
Description
Examples of universal HART commands:
Command Function
0 Reads manufacturer and device type - only with this command 0 can 󹪝eld devices
be addressed by means of a short frame address
1 Reads primary variable and unit
2 Reads current and percentage of range, digitally as 󹪞oating-point number
(IEEE 754)
3 Read up to four pre-de󹪝ned dynamic variables (primary variable, secondary vari‐
able, etc.)
9 Read up to four pre-de󹪝ned dynamic variables (primary variable, secondary vari‐
able, etc.)
11 Reads manufacturer and device type
13, 18 Reads or writes tag, descriptor and date (data included in transmission)
8.3.3.2 General purpose HART commands
De󹪝nition
General purpose commands should be supported by all manufacturers of HART 󹪝eld devices.
HART function
8.3 Communication
F-AI 8xI 2-/4-wire HART HA
84 Equipment Manual, 09/2021, A5E50557845-AA