Emerson Rosemount 5400 Series - Establish HART Communication; 1 Connect to the MA;MB Terminals

66
Reference Manual
00809-0100-4026, Rev HA
Section 4: Electrical Installation
November 2014
Electrical Installation
4.11 Establish HART communication
The Rosemount 5400 Series can be configured using the RRM PC software or a Field
Communicator. Configuration is done by sending HART commands through the HMC to the
Rosemount 5400 transmitter electronics. To establish HART communication, connect to the
MA/MB terminals, or to the HART terminals. Both alternatives are described below.
4.11.1 Connect to the MA/MB terminals
The Rosemount 5400 level transmitter can be configured with RRM using the MA, MB terminals.
An RS-485 Converter is required to connect to the transmitter.
The transmitter will try to establish communication using different protocols during 20 second
timeslots from time of startup.
Figure 4-21. RS-485 Communication after Startup
The transmitter will continue to use a communication protocol once communication has been
established.
To configure the Rosemount 5400 level transmitter using RRM and the MA, MB terminals, do
the following:
1. Connect the RS-485 Converter to the MA, MB connectors.
2. Start RRM and open Communication Preferences.
HART
20 seconds
Modbus RTU
20 seconds
Configured
protocol
(Modbus RTU,
Levelmaster,
or Modbus
ASCII)
20 seconds
HART
20 seconds
Time
0 s 20 s 40 s 60 s 80 s 100 s
Configured
protocol
(Modbus RTU,
Levelmaster,
or Modbus
ASCII)
20 seconds