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<3. Parameter Setting>
3-28
IM 01C25T01-06EN
3.3.16 Burst Mode
3.3.16.1 In the case of using HART 5
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 and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu]
→ Detailed setup →
Output condition → HART output
→ Burst option →
EJX_HART 5[1.2]
DTM
Configuration → HART → Burst
option →
Display Item
Contents
PV
Process variable assigned to PV
(Either of pressure, static pressure)
%range/current
Output in % and mA
Process vars/crnt Output in mA and process variables
assigned to PV, SV and TV.
(Output in mA, pressure, static
pressure and capsule temperature)
(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 and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu]
→ Detailed setup →
Output condition → HART output
→ Burst mode
EJX_HART 5[1.2]
DTM
Configuration → HART → Burst
mode
Display Item
Contents
Off
Stop the burst mode
On
Start the burst mode
3.3.16.2 In the case of using HART 7
HART 7
4-20mA
When the
Burst mode
is enabled, the transmitter
continuously sends up to three data listed in Table
3.1.
Refer to the subsection 3.3.16.2.1 Burst Message
for details.
In case of using HART 7 Burst communication, use
Burst Message 1 in the following settings;
Contents
Menu
Value
Update Period
Set Burst Period 0.5 s (default)
Trigger Mode
Burst Msg
Trigger Mode
Continuous
(default)
Strat of Burst
mode
Burst mode
Wired HART
Enabled
When the
Burst mode
is set to “Wired HART
Enabled”, transmitter continuously sends alarm
signal also.
Refer to subsection 3.3.16.2.2 Event Notification for
detail.
When changing the setting of
Burst mode
, set “Off”
to the
Burst mode
.
Default setting is “Off”.
3.3.16.2.1 Burst Message and Burst Mode
(1) Burst message
The 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