YOKOGAWA DpharpEJX vigilantplant EJX Series - Software Write Protect; Entering Password to Enable the Parameter Changes; Releasing Password; Setting Password

IM 01C25T01-01E
3-23
3. OPERATION
3.5.13 Software Write Protect
EJX configured 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 field and transferred to the transmitter.
When write protect is set to “Yes,” the transmitter does
not accept parameter changes. When the same eight
alphanumeric string entered in the New password
field is also entered in the Enable wrt 10min field
and transferred to the transmitter, it will be possible to
change transmitter parameters during a 10 minute
period.
To change the transmitter from the write protect “Yes”
status back to Write protect “No” status, use Enable
wrt 10min to first release the write protect function
and then enter eight spaces in the New password
field.
The software write protection does not aflect the
function of external zero adjustment screw.
To disable the external zero adjustment screw, select
Disabled in the Ext SW field before activating the
software write protection. Refer to subsection 3.5.11.
(1) Setting Password
F0338.EPS
(ENTER)
(DEL)
EJX:
Hot key
1 keypad input
2 Wrt protect menu
HELP SEND ESC ENTER
Press Hot key.
Select Wrt protect menu.
Set 1 2 3 4 and press
ENTER (F4).
EJX:
Enter new password to
change state of write
protect:
1234
HELP DEL ABORT ENTER
(ENTER)
EJX:
Re-enter new password
withing 30 seconds:
1234
1234
HELP DEL ABORT ENTER
Example: Set the password to 1 2 3 4 .
×4
×2
Set the new password again, and
press ENTER (F4).
EJX:
Wrt protect menu
1 Write Protect No
2 Enable wrt 10min
3 New password
4 Software seal Keep
HELP SEND ESC ENTER
Select New password.
2
3
4
1
F0355.EPS
(OK)
Press OK (F4).
Write Protect status changes from
NO to YES.
EJX:
It changed the state
of protection related
password.
HELP DEL ABORT OK
5
(2) Entering Password to Enable the Param-
eter Changes
F0339.EPS
(ENTER)
(DEL)
EJX:
Hot key
1 keypad input
2 Wrt protect menu
HELP SEND ESC ENTER
Press Hot key.
Select Wrt protect menu.
Set 1 2 3 4 and press
ENTER (F4).
EJX:
Enter current
password to enable to
write for 10
minutes:
1234
HELP DEL ABORT ENTER
(OK)
EJX:
Released the write
protection for 10
minutes.
HELP DEL ABORT OK
(OK)
Press OK (F4), and the write protect
is released for 10 minutes.
EJX:
If you wish to
release completely,
you have to change
password to all of
spaces.
HELP DEL ABORT OK
Example: Enter the password of 1 2 3 4 .
×4
Press ENTER (F4).
EJX:
Wrt protect menu
1 Write Protect No
2 Enable wrt 10min
3 New password
4 Software seal Keep
HELP SEND ESC ENTER
Select Enable wrt 10min.
2
3
4
5
1
(3) Releasing Password
To release the password completely, enter spaces in the
New password field while the write protect function
is released.