Emerson Rosemount 5300 Series - Modbus Communication Protocol Configuration

5.9 Modbus
®
communication protocol
configuration
The Rosemount 5300 Level Transmitter can communicate with RTUs using Modbus RTU
(often referred to as just “Modbus”), Modbus ASCII, and Levelmaster (also known as
“ROS,” “Siemens,” or “Tank” protocol).
Table 5-5: List of RTU Supported Protocols
RTU Protocols
ABB Totalflow Modbus RTU, Levelmaster
Bristol
™
ControlWave
™
Micro Modbus RTU
Emerson ROC800 Series Modbus RTU, Levelmaster
(1)
Emerson FloBoss
™
107 Modbus RTU, Levelmaster
(1)
Kimray
®
Inc. DACC
™
2000/3000 Levelmaster
ScadaPack Modbus RTU
Thermo Electron Autopilot Modbus RTU, Levelmaster
(1) Levelmaster protocol should be used when using the Emerson Digital Level Sensor (DLS) User
Program or Application Module together with the device. Use Modbus RTU in other cases.
Modbus ASCII is not commonly used, since it doubles the amount of bytes for the same
message as the Modbus RTU.
If you do not have any of these RTUs, check your RTU manual to see which protocols it
supports.
5.9.1
Change Modbus communication parameters using
Rosemount Radar Master
To change the Modbus address and communication parameters in Rosemount Radar
Master:
Prerequisites
Note
To change Modbus communication parameters, the Rosemount 5300 Level Transmitter
must use HART address 1, the default address.
Procedure
1. Start Rosemount Radar Master and connect to the transmitter.
2. Select Setup → General.
3. Select the Communication tab.
4. Select Modbus Setup.
5. In the Modbus Setup window, select Enter Modbus communication settings.
Reference Manual Configuration
00809-0100-4530 April 2019
Reference Manual 147