Emerson TopWorx 4310 Instruction Manual page 15

Instruction Manual
October 2009
HART Long Tag—enter the HART Long Tag
information (up to 32 characters).
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
Wireless Mode—displays the current communication
state of the device, or its ability to provide
information to the network. During normal start−up a
configured device will go through the following
sequence: SEARCHING, to NEGOTIATING, to
CONNECTED, and to OPERATIONAL.
SEARCHING—the device is waiting to detect the
presence of a wireless network with the same
Network ID and join key.
NEGOTIATING—the presence of a wireless network
with the same network parameters has been
detected and the device is attempting to join the
network.
CONNECTED—the device has detected the
presence of a wireless network with the same
network parameters and has successfully joined the
network.
OPERATIONAL—the device is operating within a
wireless network.
DISCONNECTED—the device has become
disconnected from the wireless network.
IDLE—the device has been instructed by a HART
command not to attempt to participate in a wireless
network.
DISCONNECTED and IDLE are used in
maintenance activities.
The Network ID and Join Key are
shipped with default values and must
be changed prior to use.
Note
4310 Wireless Position Monitor
Network ID—displays the default Network ID.
Join Key to Network—enter the Network ID (up to
5−digits) 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 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.
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.
Show Burst Variables—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 4310
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.
Note
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