Rosemount 5300 Series with HART® to Modbus® Converter
May 2016
Reference Manual
00809-0100-4530, Rev DD
402
Rosemount 5300 Series with HART® to Modbus® Converter
The Remote Terminal Unit needs to be configured to communicate and correctly interpret
data when reading input registers from the Rosemount 5300 Series Transmitter.
Baud rate
The specified Baud Rates below are recommendations. If other Baud Rates are used, make
sure the Rosemount 5300 Series Transmitter and the RTU are configured for the same
communication speed.
Floating point format code
See
“Common Modbus host configuration” on page 397
RTU data type
The RTU data type specifies which configuration to use in the RTU in order for the RTU to
correctly interpret a floating point number transmitted from the Rosemount 5300 Series
Transmitter with Modbus.
Input register base number
Data registers in the Rosemount 5300 Series Transmitter with Modbus are numbered
exactly as they are transmitted in the Modbus communication. Some RTUs use different
naming conventions and to configure the RTU to poll the correct registers from the
Rosemount 5300 Series Modbus, an Input Register Base Number is stated for each RTU
respectively. For example, if the input register base number is 1 for the RTU, the Rosemount
5300 Series Modbus input register 1302 has to be entered in the RTU address as input
register 1303.
J.11.1
Emerson Process Management ROC800 Series
Figure J-9. Wiring Diagram for Connecting Rosemount 5300 Modbus to Emerson
Process Management ROC800 Series
5300 Modbus
MA
MB
POWER +
POWER -
Power Supply
+ 8 to + 30 Vdc
(max. rating)
GND
ROC800 Series
RS-485
A (RX/TX+)
B (RX/TX-)
Y
Z
COM
Содержание 5300 Series
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