
7 HART function...................................................................................................................................... 33
7.1 Use.................................................................................................................................... 33
7.1.1 Useful information on use.................................................................................................. 33
7.1.2 HART ................................................................................................................................. 34
7.1.3 HART protocol.................................................................................................................... 34
7.2 System connection ............................................................................................................ 35
7.2.1 Useful information about system connection...................................................................... 35
7.2.2 HART conguration tool ..................................................................................................... 36
7.2.3 HART signal ....................................................................................................................... 37
7.2.4 HART device status............................................................................................................. 37
7.3 Communication ................................................................................................................. 38
7.3.1 Useful information about communication .......................................................................... 38
7.3.2 HART command................................................................................................................. 39
7.3.3 Explanation of the HART commands................................................................................... 39
7.3.3.1 Universal HART commands................................................................................................. 39
7.3.3.2 General purpose HART commands...................................................................................... 40
7.3.3.3 Device-specic HART commands ........................................................................................ 40
7.3.4 SHC sequence.................................................................................................................... 40
7.3.5 Parallel operation............................................................................................................... 41
7.4 Variables............................................................................................................................ 41
7.4.1 Useful information about HART variables............................................................................ 41
7.4.2 HART variables................................................................................................................... 42
7.4.3 Quality code ...................................................................................................................... 42
7.4.4 HART revision .................................................................................................................... 43
7.4.4.1 Field devices with HART revision 5 and 6 ............................................................................ 43
7.4.4.2 Field devices with HART revision 7 and higher .................................................................... 44
7.4.5 multiHART range................................................................................................................ 44
8 Technical specications ....................................................................................................................... 45
8.1 Technical specications ...................................................................................................... 45
A Parameters, diagnostics messages and address space ....................................................................... 49
A.1 Parameter assignment ....................................................................................................... 49
A.2 Parameter assignment and structure of the module/channel parameters............................. 50
A.3 Parameter assignment and structure of the HART mapping parameters............................... 54
A.4 Diagnostics alarms............................................................................................................. 55
A.5 Maintenance events........................................................................................................... 56
A.6 Address space .................................................................................................................... 59
B HART operating data records............................................................................................................... 63
B.1 HART command interface................................................................................................... 63
B.2 HART operating data records.............................................................................................. 63
B.3 HART job and response data records................................................................................... 64
B.4 HART directory................................................................................................................... 70
B.5 HART feature data.............................................................................................................. 71
Table of contents
AQ 4xI HART ISOL HA
4Equipment Manual, 07/2022, A5E50102497-AB