187
October 2018
Reference Manual
00809-0100-2460, Rev DE
Appendix F
Modbus
®
Standard Question
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 187
FC02 Status register area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 188
FC03 register area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 190
FC04 register area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 191
User defined Modbus mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 199
F.1
Introduction
The Rosemount
™
2460 System Hub polls field devices and stores the information in input registers. This
allows Rosemount TankMaster and other host systems to read measurement data and status information
for a large number of tanks. This appendix lists the input registers which can be scanned in queries from
a Modbus master.
F.1.1
Priority
Polling will occur at certain intervals as specified in the table below:
Table F-1. Read interval
Priority
Register Area
Read interval in master
1
Level
1 per second
2
Average Temperature
Pressure
1 per 10 seconds
3
Temperature Element
Density
1 per 30 seconds
4
Free Water Level
Ambient Air Temperature
Ambient Air Pressure
Relay State
1 per 60 seconds
5
Units
Diagnostic
1 per 120 seconds
Summary of Contents for Rosemount 2460
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Page 12: ...x Reference Manual 00809 0100 2460 Rev DE Contents October 2018 Contents ...
Page 18: ...6 Reference Manual 00809 0100 2460 Rev DE Introduction October 2018 Introduction ...
Page 60: ...48 Reference Manual 00809 0100 2460 Rev DE Installation October 2018 Installation ...
Page 100: ...88 Reference Manual 00809 0100 2460 Rev DE Configuration October 2018 Configuration ...
Page 238: ...226 Reference Manual 00809 0100 2460 Rev DE Index October 2018 Index ...
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