Emerson Rosemount 5300 Series - Page 20

Product Data Sheet
00813-0100-4530, Rev DA
December 2010
Rosemount 5300 Series
20
Modbus (Output Option Code M) - (See Ordering Information in Table 1 on page 4 and Table 2 on page 11)
Output 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
(1)
The input voltage U
i
for Modbus is 8-30 Vdc (max. rating)
Power Consumption:
< 0.5 W (with HART address=1)
< 1.2 W (incl. four HART slaves)
For Flameproof/Explosion-proof installations the Rosemount 5300 Series transmitters have a built-in
barrier; no external barrier needed.
Rosemount 5300
Series Transmitter
HART
Modem
Power
Modbus, Levelmaster
Emulation / RS-485
Control
System
RS-232 / RS-485
Converter
Field Communicator
PC
5300 Setup in
Rosemount Radar
Master
PC
5300 Setup in
Rosemount Radar
Master via Tunneling
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
Power
Supply
RS-485 Bus
MODBUS
(RS-485)
v
erter
MB
MA
-
120
120
A
B
HART -
HART +
If it is the last
transmitter on the
bus, connect the
120
termination
resistor.