Emerson 5400, 5300 specifications Modbus Communication Protocol Configuration

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Rosemount 5300/5400 Series

Manual Supplement

00809-0500-4530, Rev AA October 2010

MODBUS

COMMUNICATION

PROTOCOL

CONFIGURATION

Table 1-3. List of RTUs’ Supported Protocols

The Rosemount 5300/5400 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).

RTU

Protocols

ABB Totalflow

Modbus RTU, Levelmaster

Bristol ControlWave Micro

Modbus RTU

Emerson Process

Modbus RTU, Levelmaster(1)

Management ROC800 Series

 

Emerson Process

Modbus RTU, Levelmaster(1)

Management FloBoss 107

 

Kimray DACC 2000/3000

Levelmaster

ScadaPack

Modbus RTU

Thermo Electron Autopilot

Modbus RTU, Levelmaster

 

 

Using RRM to change communication parameters

(1)Levelmaster protocol should be used when using the Emerson Process Management 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.

NOTE

To change Modbus communication parameters, the Rosemount 5300/5400 must use HART address 1, the default address.

NOTE

After changing communication parameters, disconnect the HART modem and wait at least 60 seconds for the change to take effect.

In case the MA/MB terminals are used for connection to the HMC, disconnect the RS-485 Converter, cycle power to the transmitter and wait up to 60 seconds for the change to take effect.

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Contents Rosemount 5300/5400 Series with Hart to Modbus Converter Manual SupplementSafety Messages Explosions could result in death or serious injuryIntroduction WorkflowMechanical Installation Electrical Installation Field Wiring Connections Hart + Installation cases RS-485 BusStar Topology Alternative Multidrop Connection of 5300/5400 TransmittersNo. of devices Approx. update rate Slaves External Hart Devices SlavesEstablish Hart Communication Connect to the MA/MB terminalsRosemount 5300/5400 Series Connect to the Hart terminals Transmitter Configuration Modbus Communication Protocol Configuration Using RRM to change communication parametersModbus Setup Modbus RTU Parameter Configuration Example HMC A127 Levelmaster Communication SetupHMC A44 B4800 PO S2 Levelmaster Parameter Configuration Example HMC M2 A2 B9600 D7 PN S1Implemented Functions of Levelmaster Protocol Modbus Ascii Communication Setup HMC M1 A246 B9600 D7 PN S1Rosemount 5300/5400 Series Alarm Handling Modbus Ascii Modbus RTULevelmaster Rosemount 5300/5400 Series Common Modbus Host Configuration Input RegistersBit information in bitfield 14. Output Variables for Floating Point Format Code Rosemount 5300/5400 Series Volume Length Measurement UnitsSpecific Modbus Host Configuration Emerson Process Management ROC800 SeriesEmerson Process Management FloBoss ABB TotalFlowThermo Electron Autopilot Bristol ControlWave MicroScadaPack Kimray Dacc 2000/3000No communication with Modbus RTU protocol Troubleshooting No communication on RS-485 bus MA, MBNo 5300/5400 communication in RRM No communication with Modbus Ascii protocolHMC Firmware Upgrade in Rosemount Radar Master Select Enable Modbus Communication and click OKRosemount 5300/5400 Series Click Browse Checksum Rosemount 5300/5400 Series Specifications Rosemount 5300/5400 Series Emerson Process Management Rosemount Measurement