Emerson 5400 Manuel D’Utilisation

00809-0500-4530, Rev AA

October 2010

Rosemount 5300/5400 Series

1-12

6. Connect to the transmitter and perform the necessary configuration.

7. After completing the configuration, disconnect the RS-485 Converter, 

connect the Modbus communication wires and cycle power to the 
transmitter

8. Verify communication between the transmitter and the RTU is 

established (can take up to 60 seconds from startup).

Take the following into consideration if there are multiple 5300/5400 Modbus 
units on the bus:

By default, the transmitters have HART address 1. It will not be possible to 
establish communication on HART address 1 if several transmitters have the 
same address. In this case, there are alternative solutions to establish 
communication:

1. Select the Scan by Tag option in the Search Device window in RRM and 

enter the HART Device Tag of the transmitter. Communication can now 
be established with an individual transmitter even if several devices have 
the same HART address.

2. Make sure the 5300/5400 transmitter is alone on bus. Disconnect or turn 

off power from any other devices.

To configure the 5300/5400 transmitter, connect the communicator or PC to 
the HART terminals using a HART modem, see Figure 1-3 on page 1-6. Both 
the configuration tool and the RS-485 bus can be connected simultaneously. 
Configuration data is sent with HART commands through the HMC to the 
5300/5400 transmitter electronics, as illustrated in Figure 1-1 on page 1-3. 
Note that the power supply must be connected during configuration, see also 
“Electrical Installation” on page 1-4.

NOTE
Measurement data is not updated to the Modbus Master when a configuration 
tool is connected.