
B–63010EN/02
4. DESCRIPTION OF PARAMETERS
161
consequences as indicated in the table below, depending on the input
method, and the value cannot be input.
The value of cipher for safety parameter can be set while the safety
parameter is not locked, that is, while the value of cipher for safety
parameter is 0 or is the same as the lock for safety parameter (No. 3226).
The following safety parameters can be protected by the cipher for safety
parameter.
No.1023, No.1829, No.1838, No.1902 #3, No.1902 #6, No.1942,
No.1943, No.1944, No.1945, No.1946, No.1947, No.1948, No.3225,
No.4372
Input method
Result
MDI input Warning “WRITE–PROTECTED”
G10 (programmable parameter input) P/S231 The G10 L50 format is
incorrect.
Input by reader/punch interface No alarm is raised, but the parameter
is not input.
Input by window Completion code7 (write protect)
3226 Lock of safety parameter for dual check safety function
[Data type] 2–word
[Valid data range] 0 to 99999999
If the same value as the cipher for safety parameter is specified in this
parameter, the lock is unlocked, and the safety parameter can be changed.
The setting is not displayed. When the power is turned off, the setting is
cleared, and the parameter is locked again.
CAUTION
Once a safety parameter is locked, the lock must be
unlocked or a memory all clear operation must be carried
out to change the safety parameter. In addition, the cipher
for safety parameter cannot be used. Take great care when
setting the cipher for safety parameter.