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Rosemount 5300 Series with HART® to Modbus® Converter
May 2016
Reference Manual
00809-0100-4530, Rev DD
383
Rosemount 5300 Series with HART® to Modbus® Converter
Figure J-7. The HMC Module Supports up to Four External Devices (Slaves)
J.6
Establish HART communication
The Rosemount 5300 Series can be configured using the Rosemount Radar Master (RRM) PC
software or a Field Communicator. Configuration is done by sending HART commands
through the HART to Modbus Converter (HMC) to the 5300 Transmitter electronics. To
establish HART communication, connect to the MA/MB terminals, or to the HART terminals.
Both alternatives are described below.
J.6.1
Connect to the MA/MB terminals
The Rosemount 5300 Series Level Transmitter can be configured with RRM using the MA,
MB terminals.
An RS-485 Converter is required to connect to the transmitter.
The transmitter will try to establish communication using different protocols during 20
second timeslots from time of startup.
Figure J-8. RS-485 Communication after Startup
The transmitter will continue to use a communication protocol once communication has
been established.
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
Up to four
external devices
External HART
device 2
External HART
device 1
HART
20 seconds
Modbus RTU
20 seconds
Configured
protocol
(Modbus RTU,
Levelmaster, or
Modbus ASCII)
20 seconds
HART
20 seconds
Time
0 s
20 s
40 s
60 s
80 s
100 s
Configured
protocol
(Modbus RTU,
Levelmaster, or
Modbus ASCII)
20 seconds
Содержание 5300 Series
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Страница 310: ...Product Certifications May 2016 Reference Manual 00809 0100 4530 Rev DD 296 Product Certifications ...
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