1056-01-21-38-AN Rosemount

The RS-485 Modbus version communicates by Modbus RTU, Modbus ASCII, and Levelmaster protocols.

8 data bits, 1 start bit, 1 stop bit, and software selectable parity.

Baud Rate 1200, 2400, 4800, 9600 (default), and 19200 bits/s

Address Range 1 to 255 (default device address is 246)

HART communication is used for configuration via the HART terminals or tunneling via the RS-485.

External power supply

The input voltage Ui

 for Modbus is 8-30 Vdc (max. rating).

Note

Rosemount 5300 Level Transmitters with Flameproof/Explosion-proof output have a built-in barrier; no external barrier

needed.(9)

Power consumption

■ < 0.5 W (with HART address=1)

■ < 1.2 W (incl. four HART slaves)

Note

The Rosemount 5300 Level Transmitter with Modbus protocol is configured to HART address 1 at factory. This reduces

power consumption by locking the analog output at 4 mA.

Display and configuration

Integral display

The integral digital display can toggle between: level, distance, volume, internal temperature, interface distance,

interface level, peak amplitudes, interface thickness, percentage of range, analog current out.

Note

The display cannot be used for configuration purposes.

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