Quality Code; Hart Revision; Field Devices With Hart Revision 5 And 6 - Siemens SIMATIC ET 200SP HA Equipment Manual

7.4.3

Quality code

Definition
The quality code describes the process status of the corresponding HART variable.
Description
The quality code is structured as follows:
Bit
The quality codes generated by the I/O module conform to the HART revision of the field device
used.
• Field devices with HART revision 5 and 6 (Page 47)
• Field devices with HART revision 7 and higher (Page 48)
7.4.4

HART revision

7.4.4.1

Field devices with HART revision 5 and 6

Definition
The quality code is formed exclusively from the 1st and 2nd status byte (HART device status) of
the response frames (HART command 3).
AI 4xI 2-/4-wire HART ISOL HA
Equipment Manual, 07/2022, A5E50101523-AB
7....6 5....2
Quality Sub-status
0 0: Bad Coded according to "PROFIBUS PA Pro‐
0 1: Uncertain file for Process Control Devices"
1 0: Good
1 1: Good
HART function
7.4 Tags
1...0
Limits
0 0: OK
0 1: Low limit
1 0: High limit
1 1: Constant
47