Siemens SIMATIC ET 200iSP

Structure of the HART variable data record
Byte Meaning
Channel 0
0…3 Value Primary Variable (PV)
4 Quality code
5…8 Value Secondary Variable (SV)
9 Quality code
10…13 Value Tertiary Variable (TV)
14 Quality code
15…18 Value Quaternary Variable (QV)
19 Quality code
Channel 1
20…39 HART variables same as for channel 0
Channel 2
40…59 HART variables same as for channel 0
Channel 3
60...79 HART variables same as for channel 0
If HART is not enabled or the respective HART variable is not supplied from the connected 󹪝eld
device, the corresponding variable = 0 and the QC = 0x37 (initialization value from the analog
module).
A.6.7 HART-speci󹪝c settings
HART communication is available via standard parameter assignment.
Additional HART-speci󹪝c settings can be de󹪝ned channel-speci󹪝c via the data records 131...134.
The parameters set in STEP 7 are not changed in the CPU, which means that the parameters set
in STEP 7 will be valid again after a startup.
Every new parameter assignment of the analog module resets the HART-speci󹪝c settings back to
the initial values from parameter data record 128.
Channel Data record number
0 131
1 132
2 133
3 134
Structure of the HART-speci󹪝c settings
Byte 7 6 5 4 3 2 1 0 Description
Byte 0 Must be 128 Bit 7 is reset after evaluation of data record by module
Byte 1 Must be 5 O󹪜set for manufacturer-speci󹪝c parameters according to
HART speci󹪝cation
Appendix
A.6 HART operating data records
ET 200iSP
460 Operating Instructions, 11/2022, A5E00247483-AK