IM 1F6A0-01E
5-18
5. BASIC OPERATING PROCEDURES
5.6.7 Data Renewing
There are two methods to load the data of YEWFLO to
HART Communicator, periodic data renewing and discretion-
ary data renewing.
(1) Periodic Data Renewing
The follwing data are renewed in 0.5 to 2 seconds cycle.
PV, PV % rnge, PV AO, Totl
(2) Discretionary Data Renewing
The following data can be loaded from/to YEWFLO. Up
load can be done with SAVE (F2) on any online menu,
and down load can be done on Saved Configuration
menu in Offline menu. (Refer to HART Communicator
Manual.)
5.6.8 Checking for Problems
The self-diagnostic function YEWFLO is stated at Chapter 6.
By using HART Communicator, it is also available to carry
out in “Test/Status” parameter. Exam for each error.
*Calling up “Diag/Service” setting display.
1.Device setup -> 2.Diag/Service
5.6.9 Write Protect
Write protect function is provided to inhibit parameter
change. That becomes active by entering a password in “New
password”. Write protect status is released for 10 minutes by
entering the password in “Enable wrt 10min”.
Setting the Password
DYF:
Enter new password to
change state of write
protect:
DEL
ABORT
ENTER
The first indication of Wire protect
menu is “1.Write protect
⇒
No” after
password setting, it shows “Yes”.
Enter a password into
.
Press ENTER(F4).
DEL
ABORT
ENTER
Enter a password into
again.
Press ENTER(F4).
Then, “Change to new password” is
indicated.
HOT KEY
⇒
2.Wrt protect menu
⇒
3.New password
DYF:
Re-enter new password
within 30 seconds:
*****
*****
F050605_1.EPS
HOT KEY
⇒
2.Wrt protect menu
⇒
2.Enable wrt 10min
F050605_2.EPS
“Enable Write” release write protect status for 10 minutes.
While write protect status is released, enter a new password
in the “New Password”.
It will not be possible to set a new password when 10
minutes have elapsed.
If a parameter, which is able to rewrite, it changed during it
is in “Enable wrt 10min”, releasing time is extended for more
10 minutes as of the time.
DYF:
Enter current
Password to enable to
Write for 10
minutes:
DEL
ABORT
ENTER
Enter a password into
.
Press ENTER(F4).
Then, “Release the write protection
for 10 minutes.” is indicated.
F050605_3.EPS
NOTE
• When the write protect function is active (its
menu bar shows “Yes”), data setting changes
in all parameters of YEWFLO are inhibited and
cannot be changed using the HART communi-
cator.
• If 8 characters are input as “space”, the Write
protect function is in release status irrespective
of time.
• If both YEWFLO and HART Communicator
power off and on again within 10 minutes after
releasing of write protect status, “Enable Write”
becomes unavailable.
Joker Password
The Joker Password is reserved for forgetting the password.
Though a password had been already set, the Write protect
mode is able to release to inhibit status temporary be entering
the Joker Password, “YOKOGAWA”.
DYF:
Enter current
Password to enable to
Write for 10
minutes:
YOKOGAWA
DEL
ABORT
ENTER
Enter a password into
“YOKOGAWA”.
Press ENTER(F4).
HOT KEY
⇒
2.Wrt protect menu
⇒
2.Enable wrt 10min
F050605_4.EPS
Software seal
The “Software seal” menu is reserved as a evidence so that
user is able to confirm whether the Joker password is used or
not. This evidence is saved.
DYF:
Write protect menu
1.Write protect No
2.Enable wrt 10min
3.New password
4.Software seal
The first indication Software seal
manu is “4.Software seal
⇒
keep”
after the joker password setting, it
shows “Break”.
F050605_5.EPS
