Emerson Rosemount 5400 Series Reference Manual page 23

Reference Manual
00809-0100-4026, Rev HA
Figure 2-3. FOUNDATION fieldbus System Architecture
F
OUNDATION
fieldbus
Field
Communicator
Note
Intrinsically safe
installations may
Rosemount
allow fewer devices
5401
per I.S. barrier due to
current limitations.
The RS-485 Modbus version communicates by Modbus RTU, Modbus ASCII, and Level Master
Protocols.
HART communication is used for configuration via HART terminals, or tunneling via the RS-485.
Figure 2-4. RS-485 with Modbus Communication
Rosemount 5400
Series Transmitter
Transmitter Overview
Host / DCS system (e.g. DeltaV)
Rosemount Rosemount
5402 5601
Power
Modbus, Levelmaster
Emulation / RS-485
HART
Modem
Field Communicator
Maintenance
Fieldbus Modem
PC
5400 Setup in RRM
Section 2: Transmitter Overview
November 2014
H2 - High Speed Field Bus
H1 - Low Speed Field Bus
6200 ft (1900 m) max
(depending upon cable
characteristics)
Configuration with RRM
(hooked up on Fieldbus
segment)
Control
System
RS-232 / RS-485
Converter
PC
5400 Setup in RRM
through Tunneling
11