06EN003426 Rev. C ST51A/ST75A/ST75AV Mass Flow Meters
iv Fluid Components International LLC
Pulse Output and Alarm (Source/Sink) ........................................................................................................................... 23
Modbus Connections ....................................................................................................................................................... 24
Serial Interface Connector J9 .................................................................................................................................................. 25
3 OPERATION ................................................................................................................................................................................... 27
Overview ......................................................................................................................................................................................... 27
Instrument Configuration and Setup Using the Service Port (RS-232) ........................................................................................... 27
Main Menu .............................................................................................................................................................................. 28
Top Level Menu Commands ................................................................................................................................................... 28
Secondary Commands: CLI .................................................................................................................................................... 28
Start-up and Commissioning ........................................................................................................................................................... 28
Z Menu: Configure Flow Units and 4-20 mA Output Scaling .......................................................................................................... 29
Changing Flow Units, Example ............................................................................................................................................... 30
V Menu: Configure Outputs (4-20 mA and Source/Sink Outputs) ................................................................................................... 30
4-20 mA Configuration ............................................................................................................................................................ 32
Flow/Temperature Assignment ....................................................................................................................................... 32
NAMUR Mode ................................................................................................................................................................. 32
HART Damping Value ..................................................................................................................................................... 32
Source/Sink Output Configuration ........................................................................................................................................... 32
Source/Sink Output Functions ......................................................................................................................................... 32
Source/Sink Output Programming Parameters ............................................................................................................... 32
Serial Interface Command Reference ............................................................................................................................................. 33
Top Level Menu Commands ................................................................................................................................................... 33
CLI Commands ....................................................................................................................................................................... 34
HART Operation .............................................................................................................................................................................. 36
Process Data Operation .......................................................................................................................................................... 36
ST51A/ST75A/ST75AV HART Process Data Organization .................................................................................................... 36
ST51A/ST75A/ST75AV Process Variable Slots .............................................................................................................. 36
Primary Variable Classifications ...................................................................................................................................... 36
Device Description Files .......................................................................................................................................................... 36
EDDL Files ...................................................................................................................................................................... 37
Loading the DD Files to the 475 Field Communicator ............................................................................................................ 37
Service Data Operation ........................................................................................................................................................... 37
HART Command List Reference ..................................................................................................................................................... 40
ST51A/ST75A/ST75AV HART Universal Commands ............................................................................................................. 40
ST51A/ST75A/ST75AV HART Common Practice Commands ............................................................................................... 47
ST51A/ST75A/ST75AV HART Device Specific Commands ................................................................................................... 49
HART Command Bit Assignments .......................................................................................................................................... 52
Command Status Bytes ................................................................................................................................................... 52
Command 48, Additional Device Status Bytes ................................................................................................................ 54
HART Engineering Units Codes .............................................................................................................................................. 55
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