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Rosemount 5300 Series with HART® to Modbus® Converter
May 2016
Reference Manual
00809-0100-4530, Rev DD
382
Rosemount 5300 Series with HART® to Modbus® Converter
Star topology
For a star topology connection of the Rosemount 5300 Series, the transmitter with the
longest cable run needs to be fitted with a 120-
termination resistor.
Figure J-6. Star Topology Connection of Rosemount 5300 Series Transmitters
J.5.4
External HART devices (slaves)
The HMC supports up to four external HART devices. The external devices are separated by
using the HART address. The address must be different between the external devices and
only addresses 1 to 5 are allowed for multiple slaves. Connect the devices one at a time and
change the short address prior to connecting the next device by using a HART
Configuration Tool such as RRM, or a Field Communicator.
Note
The power supply from the HMC to external HART devices is not intrinsically safe. In a
hazardous environment, any external HART device connected to the HMC must have
Flameproof/Explosion-proof certification.
The HMC cyclically polls the HART devices for measurement values. The update rate
depends on the number of connected devices and is shown in
Table J-2. Approximate Update Rates for Measurement Values
No. of devices (slaves)
Approx. update rate
1
2 seconds
2
3 seconds
3
4 seconds
4
5 seconds
5
5 seconds
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
MODBUS
POWER
HART
(RS-485)
HART to Modbus Converter
MB
MA
-
-
+
+
MODBUS
(RS-485)
verter
MB
MA
-
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
Ambients > 60 ºC
Use wiring rated
for min 90 ºC
For star topology
connection, connect
the 120
termination resistor
to the transmitter
with the longest
cable run.
Содержание 5300 Series
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