Establish Hart ® Communication For Transmitter With Hart To Modbus ® Converter - Emerson 5301HxxxxxxxxxxxxxxZZ Series Reference Manual

Reference Manual
00809-0100-4530
5.4 Establish HART
transmitter with HART to Modbus
The Rosemount 5300 Level Transmitter can be configured using the Rosemount Radar
Master PC software or a handheld communicator. Configuration is done by sending HART
commands through the HART to Modbus Converter (HMC) to the 5300 Level Transmitter
electronics. To establish HART communication, connect to the MA/MB terminals, or to the
HART terminals. Both alternatives are described below.
5.4.1 Connect to the MA/MB terminals
The Rosemount 5300 Level Transmitter can be configured with Rosemount Radar Master
using the MA, MB terminals.
Prerequisites
An RS-485 Converter is required to connect to the transmitter.
The transmitter will try to establish communication using different protocols during 20
second time-slots from time of startup.
Figure 5-4: RS-485 Communication after Startup
A. Time (s)
B. Modbus RTU
C. HART
D. Configured protocol (Modbus RTU, Levelmaster, or Modbus ASCII)
The transmitter will continue to use a communication protocol once communication has
been established.
Procedure
1. Connect the RS-485 Converter to the MA, MB connectors.
2. Start Rosemount Radar Master.
3. Enable HART communication and set communication preferences.
Reference Manual
®
communication for
a) Select View → Communication Preferences.
b) Select the HART tab.
c) Select the Enable HART Communication checkbox.
d) In the Port list, select the COM port number that the RS-485 Converter is
connected to.
e) Select Advanced and use the following settings:
Configuration
April 2019
®
Converter
119