Yokogawa digitalYEWFLO (DY) - Manual (Page 63)

<8. OPERATION VIA HART CONFIGURATION TOOL (HART 5)>
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8.6 Parameter Setting
The parameter structure of the HART confi guration
tool is hierarchical.
Refer to Section 8.11 “Menu Tree (HART 5)” for the
corresponding parameters. The menu tree shows
a cross-reference of the parameters for HART
confi guration Tool and BRAIN Terminal.
Refer to Section 6.4 “Parameters Description” for
the functions of parameters.
Note that some display parameters of
digitalYEWFLO are different from those of HART
Confi guration Tools.
8.7 Data Renewing and Upload/
Download function
(1) Data renewing
Following data are renewed in 0.5 to 2 seconds
cycle.
PV, PV%, rnge, PVAO1, Total
Temp, TV% rnge, AO3: only for /MV
(2) Upload/download function
Upload/download parameters from
digitalYEWFLO to the HART Confi guration
Tool.
Refer to Section 8.11 “Menu Tree (HART 5)” for
the applicable parameters.
8.8 Self-Diagnostic
The self-diagnostic function of the digitalYEWFLO
is explained in Section 6.5 “Self-Diagnostic (Error
Code List)”.
It is also possible to carry out this function via HART
Confi guration Tool.
Procedure to call up ‘Self test/Status’;
[Root Menu]
→ Diag/Service → Self test/Status *(M)
(M): METHOD
METHOD is a program to faciliate the parameter
settings.
8.9 Software Write Protect
digitalYEWFLO confi gured data is saved by using
a write protect function. The write protect status is
set to “Yes” when 8 alphanumeric characters are
entered in the New password fi eld and transferred
to the device. When write protect is set to “Yes,”
the device does not accept parameter changes.
When the same eight alphanumeric string entered
in the New password fi eld is also entered in the
Enable wrt 10min fi eld and transferred to the
digitalYEWFLO, it will be possible to change the
device parameters during a 10 minute period.
To change the digitalYEWFLO from the write
protect “Yes”status back to Write protect “No”
status, use Enable wrt 10min to fi rst release the
write protect function and then enter eight spaces in
the New password fi eld.
8.10 Specifi c Functions of HART
Confi guration Tool
8.10.1 Burst Mode
digitalYEWFLO continuously sends the data via
HART Confi guration Tool when the burst mode is
set on. The data is sent intermittently as a digital
signal at 3 times a second.
Procedure to call up ‘Burst option’ and ‘Burst
mode’;
(1) Setting the data to be sent
[Root Menu] → Detailed Setup → Confi gure
outputs → HART Output → Burst option
Select the type of data to be sent from the
following options:
- Instantaneous fl ow rate (PV)
- Output in % and current output (% range/
current)
- Current output, PV, SV, TV, QV
(2) Setting the burst mode
[Root Menu]  Detailed Setup  Confi gure
outputs → HART Output → Burst mode
Then, select “On” at the menu to start the burst
mode.
To release from the burst mode, call up the
burst mode display, and set to “Off.”
The default setting is “Off.”