GE DigitalFlow GC868, Руководство по программированию

Страница: 59 / 172

April 2008
1-50 Programming Site Data
Activating Security
In order to prevent unauthorized tampering with the flowmeter’s
programming, the Model GC868 is equipped with a security feature
that locks out the following menus:
•
Program Menu
[PROG]
•
Calibration Menu
[CAL]
•
Log Menu
[LOG]
•
Clear Menu
[CLR]
When the system is locked, access to the above menus will be denied
unless the correct password is entered. The Model GC868 is shipped
with a
default password , which is given later in this section. For
increased security, the default password should be changed.
IMPORTANT:
Once the system has been locked, it can only be
unlocked by entering the password, because access
to the
SECUR
submenu is restricted.
To program the
SECUR
submenu, press [
→]
twice and
[F2]
at the initial
User Program screen. Refer to Figure A-3 on page A-3.
IMPORTANT:
It is recommended that all program parameters be
recorded before changing the password. (This
information should be recorded in Appendix B,
Data
Records , as a matter of routine.) If the password is
lost, the site data is not retrievable and will have to
be re-entered.
1. At the Lock Out prompt, press
[F1] = UNlck
to unlock the system
and return to the
Global PROGRAM
prompt, or press
[F2] = LOCK
to
lock the system.
Note:
If the system was unlocked at the above prompt, the following
three prompts do not appear.
2. Enter the current Password ( 2719 is the default password) and
press
[ENT]
.
3. At the ?Edit Password prompt, press
[F1] = NO
to leave the
password unchanged and proceed to Procedure Options on the
next page, or press
[F2] = YES
to enter a new password.
IMPORTANT:
Since the default password is printed in this manual,
a new password should be entered. If the password is
ever lost, contact the factory for assistance.