Introduction; Priority - Emerson Rosemount 2460 System Hub Reference Manual

Reference Manual
00809-0100-2460, Rev DE
Appendix F
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
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
1
2
3
4
5
®
Modbus Standard Question
Modbus
™
2460 System Hub polls field devices and stores the information in input registers. This
Register Area
Level

Average Temperature

Pressure

Temperature Element

Density

Free Water Level

Ambient Air Temperature

Ambient Air Pressure

Relay State

Units

Diagnostic

®
Standard Question
®
Modbus Standard Question
October 2018
Read interval in master
1 per second
1 per 10 seconds
1 per 30 seconds
1 per 60 seconds
1 per 120 seconds
187