
198
Reference Manual
00809-0100-4811, Rev DA
Appendix C: Rosemount 3300 Series with HART
®
to Modbus
®
Converter
January 2015
Rosemount 3300 Series with HART
®
to Modbus
®
Converter
Table C-15. Output Variables for Floating Point Format Code 3
Measurement units
Measurement units for the various HART slaves are stored in input registers as a Unit Code
presented in Tab le C -16. Conversion from Unit Code to measurement unit is given in Table C-17
on page 198.
Table C-16. Measurement Units and Corresponding Input Registers
Table C-17. Conversion of Unit Code to Measurement Unit
Register name Register number Note
Slave 1 Status 2200
Bit information in bitfield:
Bit 0: Invalid Measurement Slave 1 PV.
Bit 1: Invalid Measurement Slave 1 SV.
Bit 2: Invalid Measurement Slave 1 TV.
Bit 3: Invalid Measurement Slave 1 FV.
Bit 14: HART bus busy (slave in burst or other master
present)
Bit 15: HTM Task not running (option not available).
Note: Bit 1-3 is set when Invalid Measurement of Slave
1 Non PV, i.e. all three bits are set simultaneously.
Slave 1 PV 2202
Primary variable from slave 1 represented in IEEE 754
format, using Floating Point Format Code 3.
Slave 1 SV 2204
Secondary variable from slave 1 represented in IEEE
754 format, using Floating Point Format Code 3.
Slave 1 TV 2206
Tertiary variable from slave 1 represented in IEEE 754
format, using Floating Point Format Code 3.
Slave 1 FV (QV) 2208
Fourth variable from slave 1 represented in IEEE 754
format, using Floating Point Format Code 3.
Register name Register number Note
Slave 1 PV Units 104
See
Tab le C -1 7 for conversion from Unit Code to
Measurement Unit.
Slave 1 SV Units 108
Slave 1 TV Units 112
Slave 1 FV (QV) Units 116
Unit code Measurement unit Unit code Measurement unit
Volume Length
40 US Gallon 44 Feet
41 Liters 45 Meters
42 Imperial Gallons 47 Inches
43 Cubic Meters 48 Centimeters
46 Barrels 49 Millimeters
111 Cubic Yards Temperature
112 Cubic Feet 33 Degree Fahrenheit
113 Cubic Inches 32 Degree Celsius
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