Siemens SIMATIC ET 200SP HA - Application case 2: SIL3;Cat.3;PLd, 4-wire transducer, 1 oo1

7.3.3 Explanation of the HART commands
7.3.3.1 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
11 Reads manufacturer and device type
1 Reads primary variable and unit
2 Reads current and percentage of range, digitally as 󹪞oating-point number
(IEEE 754)
3 Reads up to four pre-de󹪝ned, dynamic variables (primary variables, secondary
variables, etc.)
9 Reads up to four pre-de󹪝ned, dynamic variables (primary variables, secondary
variables, etc.)
13, 18 Reads or writes tag, descriptor and date (data included in transmission)
7.3.3.2 General purpose HART commands
De󹪝nition
General purpose commands should be supported by all manufacturers of HART 󹪝eld devices.
Description
Examples of usable HART commands:
Command Function
36 Sets high range limit
37 Sets low range limit
41 Perform self-test
43 Sets the primary variable to zero
HART function
7.3 Communication
AI 4xI 2-/4-wire HART ISOL HA
44 Equipment Manual, 07/2022, A5E50101523-AB