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Reference Manual
00809-0100-4860, Rev BC
Section 4: Operation
January 2013
Operation
Poll address
Poll Address enables you to set the poll address for a multi-dropped meter. The poll address is
used to identify each meter on the multi-drop line. Follow the on-screen instructions to set the
address at a number from 1 to 15. To set or change the flowmeter address, establish
communication with the selected Rosemount 8600D in the loop.
Auto poll
When a HART-based communicator is powered up and auto polling is on, the communicator
automatically polls the flowmeter addresses to which it is connected. If the address is 0, the
HART-based communicator enters its normal online mode. If it detects an address other than 0,
the communicator finds each device in the loop and lists them by poll address and tag. Scroll
through the list and select the meter with which you need to communicate.
If Auto Poll is off, the flowmeter must have the poll address set to 0 or the flowmeter will not be
found. If a single connected device has an address other than zero and auto polling is off, the
device will not be found either.
Number of required preams
This is the number of preambles required by the 8600D for HART communications.
Number of response preams
This is the number of preambles sent by the transmitter in response to any host request.
Burst mode
Burst mode configuration
The Rosemount 8600D includes a burst mode function that broadcasts the primary variable or
all dynamic variables approximately three to four times a second. The burst mode is a
specialized function used in very specific applications. The burst mode function enables you to
select the variables to broadcast while in the burst mode and to select the burst mode option.
The Burst Mode variable enables you to set the Burst Mode to the needs of your application.
Options for the Burst Mode setting include:
Off–Turns off the Burst Mode so that no data are broadcast on the loop.
On–Turns Burst Mode on so that the data selected under Burst Option are broadcast over the
loop.
Additional command options may appear that are reserved and do not apply to the Rosemount
8600D.
Field Comm. 1, 4, 2, 3, 1
Field Comm. OFF LINE FCN
Field Comm. 1, 4, 2, 3, 2
Field Comm. 1, 4, 2, 3, 3
Field Comm. 1, 4, 2, 3, 4