
6.2.3 Channel status / fault LEDs ................................................................................................. 33
6.2.4 PWR LED ............................................................................................................................ 34
6.3 Interrupts .......................................................................................................................... 34
7 HART function...................................................................................................................................... 37
7.1 Use.................................................................................................................................... 37
7.1.1 Useful information on use.................................................................................................. 37
7.1.2 HART ................................................................................................................................. 38
7.1.3 HART protocol.................................................................................................................... 38
7.2 HART system connection.................................................................................................... 39
7.2.1 Useful information about system connection...................................................................... 39
7.2.2 HART conguration tool ..................................................................................................... 40
7.2.3 HART signal ....................................................................................................................... 41
7.2.4 HART device status............................................................................................................. 41
7.3 Communication ................................................................................................................. 42
7.3.1 Notes on communication ................................................................................................... 42
7.3.2 HART command................................................................................................................. 43
7.3.3 Explanation of the HART commands................................................................................... 44
7.3.3.1 Universal HART commands................................................................................................. 44
7.3.3.2 General purpose HART commands...................................................................................... 44
7.3.3.3 Device-specic HART commands ........................................................................................ 45
7.3.4 SHC sequence.................................................................................................................... 45
7.3.5 Parallel operation............................................................................................................... 45
7.4 Tags................................................................................................................................... 45
7.4.1 Useful information about HART variables............................................................................ 45
7.4.2 HART variables................................................................................................................... 46
7.4.3 Quality code ...................................................................................................................... 47
7.4.4 HART revision .................................................................................................................... 47
7.4.4.1 Field devices with HART revision 5 and 6 ............................................................................ 47
7.4.4.2 Field devices with HART revision 7 and higher .................................................................... 48
7.4.5 multiHART range................................................................................................................ 49
8 Technical specications ....................................................................................................................... 51
8.1 Technical specications ...................................................................................................... 51
A Parameters, diagnostics messages and address space ....................................................................... 57
A.1 Parameter assignment ....................................................................................................... 57
A.2 Parameter assignment and structure of the module/channel parameters............................. 58
A.3 Parameter assignment and structure of the HART mapping parameters............................... 62
A.4 Diagnostics alarms............................................................................................................. 63
A.5 Maintenance events........................................................................................................... 65
A.6 Hardware interrupts........................................................................................................... 67
A.7 Address space.................................................................................................................... 68
B HART operating data records............................................................................................................... 73
B.1 HART command interface................................................................................................... 73
B.2 HART job and response data records................................................................................... 74
Table of contents
AI 4xI 2-/4-wire HART ISOL HA
4Equipment Manual, 07/2022, A5E50101523-AB