Emerson Fisher 4320 Instruction Manual page 12

4320 Wireless Position Monitor
requirements of your application. The tag you assign
is automatically displayed when the Field
Communicator establishes contact with the 4320 at
power-up.
HART Long Tag—Enter the HART Long Tag
information
Descriptor—Enter a descriptor for the application
with up to 16 characters. The descriptor provides a
longer user-defined electronic label to assist with
more specific instrument identification than is
available with the HART tag.
Message—Enter any message with up to 32
characters. Message provides the most specific
user-defined means for identifying individual
instruments in multi-instrument environments.
D Wireless
The Network ID and Join Key are
shipped with default values and must
be changed prior to use.
Network ID—Displays the 5-digit default Network ID.
Set Net ID & Join Key—Enter the 5-digit Network ID
and the Join Key (4 sets of 8 hexadecimal digits).
The Join Key is used for encrypting the data on the
wireless network. The Network ID and the Join Key
must be the same for all devices connected to a
gateway.
D Burst Mode
Burst Mode—Enabling burst mode provides
continuous communication from the wireless position
monitor. Burst mode applies only to the transmission
of burst mode data and does not affect the way other
data is accessed.
Access to information in the instrument is normally
obtained through a wireless network or a 375 Field
Communicator. The field communicator or the
network may request any of the information that is
normally available, even while the instrument is in
burst mode. Between each burst mode transmission
sent by the instrument, a short pause allows the
Field Communicator or control system to initiate a
request. The instrument receives the request,
processes the response message, and then
continues "bursting" the burst mode data.
12
Note
Burst Command—there are six burst commands;
Command 1, Command 2, Command 3, Command
9, Command 48 and Command 178.
D Command 1 returns the Primary Variable
(PV) for the 4320
D
Command 3 returns the loop current,
Percent of Range, Close Trigger Status, Open
Trigger Status, and Temperature (outside of the
instrument).
D
Command 48 returns status about the
instruments operation.
Commands 2 and 9 are not covered in
this manual. Command 178 is used
exclusively with the 1420 gateway for
efficiency.
Update Period—Indicates the set Burst Period.
Change Update Pe...—Change Update Period
allows you to change the burst period. The
maximum burst period is 1 hour.
Change Burst Com...—Change Burst Command
allows you to change the information that is being
communicated through Burst Mode. Select one of
the following commands: Command 1, Command 3,
Command 48. Select Help for information about the
three commands.
Burst Mode Setup—Select one of the following
actions to perform: Disable Burst Mode and Exit,
Reconfigure Burst Mode, or Exit Without Making
Changes
D Broadcast Power
Power Level—Set the power level to the desired
setting, either High or Low.
D Power Information
Power Source—indicates the power source being
used. The 4320 operates solely of its (internal)
Power Module.
Power Module Type—choose the type of power
module being used; either Standard or Extended
Life.
Instruction Manual
Field Trial Release
February 2009
Note