Yokogawa EJX440A - Manual (Page 32)

<3. Operation>
3-22
IM 01C25T01-01E
3.5.9 Burst Mode
When the burst mode is set on, the transmitter
continuously sends stored data. Either the pressure
value, % range/current value, or current/process
variables can be selected and sent. The data is
sent approximately three times per second as a
digital signal when the transmitter is set in burst
mode. When data is being sent in burst mode,
other operations can be performed with the HART
communicator.
Setting of Burst Mode
F0335.ai
Call up the Burst option, and set
the data to be sent.
• PV: Primary variable (Pressure
value)
• % range/current: Output in %
and mA
• Process vars/crnt: Output in
mA and process variables
(pressure value, static
pressure value, and sensor
temp value)
EJX:
Burst option
PV
PV
% range/current
Process vars/crnt
HELP DEL ESC ENTER
EJX:
Burst mode
Off
On
Off
DEL DEL ESC ENTER
Call up the Burst mode and set
to On.
HELP
(ENTER)
(ENTER)
1. Device setup
4. Detailed setup
3. Output condition
3. HART output
3. Burst mode and 4. Burst option
EJX:
HART output
1 Poll addr 0
2 Num req preams 5
3 Burst mode On
4 Burst opiton PV
HELP SEND HOME ENTER
Press SEND (F2) to send the
data to the transmitter, then
check to confirm that
disappears.
(SEND)
SEND
2
3
1
To release Burst Mode, call up the Burst mode
display and set it to Off.
3.5.10 Multidrop Mode
“Multidropping” transmitters refers to the connection
of several transmitters to a single communications
transmission line. Up to 15 transmitters can be
connected when set in the multidrop mode. To
activate multidrop communication, the transmitter
address must be changed to a number from 1 to
15. This change deactivates the 4 to 20 mA analog
output, sending it to 4 mA. The alarm current is also
disabled.
Setting of Multidrop Mode
F0336.ai
Call up the Poll addr and set the
polling address. (a number from 1
to 15)
And press SEND (F2) to send the
data.
EJX:
Poll addr
0
1
HELP DEL ESC ENTER
HART Communicator
Polling
Ask Before Polling
Ask Before Polling
Always Poll
Digital Poll
Poll Using Tag
HELP DEL ESC ENTER
Confirm that Always Poll, Ask
Before Polling, or Digital Poll is
specified, and press ENTER (F4).
(ENTER)
1. Device setup
4. Detailed Setup
3. Output condition
3. HART Output
1. Poll addr
2. Online
4. Utility
1. Configure Communication
1. Polling
• Then make sure the communicator setting is as follows.