Manual Supplement
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
Table
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 | |
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To reset the communication parameters to default Levelmaster settings, use the following Modbus Message:
HMC M2