Yokogawa EJX930A - Manual (Page 43)

<3. Parameter Setting>
3-32
IM 01C25R02-01E
3.3.15 Burst Mode
3.3.15.1 In the case of using HART 5
When the Burst mode is enabled, the transmitter
continuously sends the stored data. 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
configuration tool.
(1) Selection of the transmission data.
Call up the
Burst option parameter and select the
data which is transferred.
• Procedure to call up the display
DD (HART 5) [Root Menu] → Detailed setup →
Output condition
→ HART output → Burst option →
DTM (HART 5) Configuration → HART → Burst
option →
Display Item Contents
PV Process variable assigned to PV
(Either of differential pressure, static
pressure, external temperature, and
flow rate)
%range/current Output in % and mA
Process vars/
crnt
Output in mA and process variables
assigned to PV, SV, TV, and 4V.
(Output in mA and four variables
from differential pressure, static
pressure, external temperature, flow
rate, and total flow.)
Xmtr Variables Selectable up to four variables from
differential pressure, static pressure,
external temperature, flow rate, and
total flow.
According to the procedure indicated
in Burst Xmtr Vars, set the selected
variables to four Slot.
(For the Slot that is not used, set the
same value as others.)
(2) Shift to the Burst mode.
To enable the Burst mode, select “On” at the
Burst
mode parameter.
To release the Burst mode, call up the Burst
mode display and set it to “Off”.
This parameter is set to “Off” when the instrument is
shipped.
• Procedure to call up the display
DD (HART 5) [Root Menu] → Detailed setup →
Output condition → HART output →
Burst mode
DTM (HART 5) Configuration → HART → Burst
mode
Display Item Contents
Off Stop the burst mode
On Start the burst mode
3.3.15.2 In the case of using HART 7
When the Burst mode is enabled, the transmitter
continuously sends up to three data listed in Table
3.8.
Refer to the subsection 3.3.15.2.1 Burst Message
for details.
When the Burst mode is set to “Wired HART
Enabled”, transmitter continuously sends alarm
signal also.
Refer to subsection 3.3.15.2.2 Event Notification for
detail.
When changing the setting of Burst mode, set “Off”
to the Burst mode.
Default setting is “Off”.
3.3.15.2.1 Burst Message and Burst Mode
(1) Burst message
EJX multivariable transmitter can transmit three
burst messages at the maximum.
The parameters for Burst Message are as follows.
• Burst Command
• Update Period and Max Update Period
• Burst Msg Trigger Mode