Emerson 5300, 5400 specifications Levelmaster Communication Setup, HMC A44 B4800 PO S2, HMC A127

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Manual Supplement

00809-0500-4530, Rev AA October 2010

Rosemount 5300/5400 Series

Levelmaster Communication Setup

To configure the 5300/5400 transmitter to communicate with the Host in this example, the following text string is written to the HART Slave 1 Message Area:

HMC A44 B4800 PO S2.

HMC: These three letters are used for safety and will eliminate the risk of changing the configuration data by mistake.

A44: A indicates that the following number is the new address (address 44). Leading zeroes are not needed.

B4800: B indicates that the following number is the new baud rate (1200, 2400, 4800, 9600, 19200).

PO: P identifies the following letter as parity type (O = odd, E = even, and N = none).

S2: S indicates that the following figure is the number of stop bits (1 = one, 2 = two).

Only values that differ from the current values need to be included. For example, if only the address is changed, the following text string is written into the 5300/5400 (HART Slave 1) Message Area:

HMC A127,

indicates that 127 is the new address.

The default and configurable parameter values can be found in Table 1-6.

Table 1-6. Levelmaster

Communication Parameters

Parameter

Default value

Configurable value

 

Baud Rate

9600

1200, 2400, 4800, 9600, 19200

 

Start Bits

One

One

 

Data Bits

Seven

Seven, Eight

 

Parity

None

None, Odd, Even

 

Stop Bits

One

One or Two

 

Address

1

1-99

 

 

 

 

To reset the communication parameters to default Levelmaster settings, use the following Modbus Message:

HMC M2

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Contents Manual Supplement Rosemount 5300/5400 Series with Hart to Modbus ConverterExplosions could result in death or serious injury Safety MessagesWorkflow IntroductionMechanical Installation Electrical Installation Field Wiring Connections Hart + RS-485 Bus Installation casesAlternative Multidrop Connection of 5300/5400 Transmitters Star TopologyExternal Hart Devices Slaves No. of devices Approx. update rate SlavesConnect to the MA/MB terminals Establish Hart CommunicationRosemount 5300/5400 Series Connect to the Hart terminals Transmitter Configuration Using RRM to change communication parameters Modbus Communication Protocol ConfigurationModbus Setup Modbus RTU Parameter Configuration Example HMC A127 Levelmaster Communication SetupHMC A44 B4800 PO S2 HMC M2 A2 B9600 D7 PN S1 Levelmaster Parameter Configuration ExampleImplemented Functions of Levelmaster Protocol HMC M1 A246 B9600 D7 PN S1 Modbus Ascii Communication SetupRosemount 5300/5400 Series Alarm Handling Modbus Ascii Modbus RTULevelmaster Rosemount 5300/5400 Series Input Registers Common Modbus Host ConfigurationBit information in bitfield 14. Output Variables for Floating Point Format Code Rosemount 5300/5400 Series Measurement Units Volume LengthEmerson Process Management ROC800 Series Specific Modbus Host ConfigurationABB TotalFlow Emerson Process Management FloBossBristol ControlWave Micro Thermo Electron AutopilotKimray Dacc 2000/3000 ScadaPackNo 5300/5400 communication in RRM Troubleshooting No communication on RS-485 bus MA, MBNo communication with Modbus RTU protocol No communication with Modbus Ascii protocolSelect Enable Modbus Communication and click OK HMC Firmware Upgrade in Rosemount Radar MasterRosemount 5300/5400 Series Click Browse Checksum Rosemount 5300/5400 Series Specifications Rosemount 5300/5400 Series Emerson Process Management Rosemount Measurement