
10.EDITING PROGRAMS OPERATION B-63944EN/02
- 1112 -
Explanation
- Setting parameter PASSWD
The locked state is set when a value is set in the parameter PASSWD.
However, note that parameter PASSWD can be set only when the
locked state is not set (when PASSWD = 0, or PASSWD = KEYWD).
If an attempt is made to set parameter PASSWD in other cases, a
warning is given to indicate that writing is disabled. When the locked
state is set (when PASSWD ≠ 0 and PASSWD ≠ KEYWD), parameter
NE9 is automatically set to 1. If an attempt is made to set NE9 to 0, a
warning is given to indicate that writing is disabled.
- Changing parameter PASSWD
Parameter PASSWD can be changed when the locked state is released
(when PASSWD = 0, or PASSWD = KEYWD). After step 3 in the
procedure for unlocking, a new value can be set in the parameter
PASSWD. From that time on, this new value must be set in parameter
KEYWD to release the locked state.
- Setting 0 in parameter PASSWD
When 0 is set in the parameter PASSWD, the number 0 is displayed,
and the password function is disabled. In other words, the password
function can be disabled by either not setting parameter PASSWD at
all, or by setting 0 in parameter PASSWD after step 3 of the procedure
for unlocking. To ensure that the locked state is not entered, care
must be taken not to set a value other than 0 in parameter PASSWD.
- Re-locking
After the locked state has been released, it can be set again by setting a
different value in parameter PASSWD, or by turning the power to the
NC off then on again to reset parameter KEYWD.