
6.PARAMETERS B-63494EN/02
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3225 Code for safety parameters
[Data type] 2-word
[Valid data range] 0 to 99999999
Set a code (password) for protecting against modifications to
parameters related to the dual check safety function (safety
parameters). When a code for safety parameters is set, the parameters
are locked. At this time, the setting (code) is not displayed but is blank,
and safety parameter input is disabled. If an attempt is made to input
data in a locked safety parameter, the result indicated in the table
below is produced, depending on the method of input. No attempt is
successful.
Input method Result
MDI input Warning "WRITE PROTECT"
G10 (programmable parameter input) P/S231 FORMAT ERROR IN G10
L50
Input via the reader/puncher interface No alarm is issued, but parameter
input is disabled.
Input through a window Completion code 7 (write protect)
A code for safety parameters can be set when the safety parameters are
not locked, that is, when the code for safety parameters is 0, or when
the code for safety parameters is the same as the key for safety
parameters (No. 3226).
The following safety parameters are protected by a code for safety
parameters:
No.1023, No.1828, No.1829, No.1838, No.1902 #3, No.1902#5,
No.1902 #6, No.1904#1, No.1904#2, No.1904#3, No.1904#4,
No.1904#5, No1904#6, No.1942, No.1943, No.1944, No.1945,
No.1946, No.1947, No.1948, No.1950, No.1959, No.1998, No.3225,
No.4372, No.4438, No.4440, No.4442, No.13800, No.13802,
No.13810, No.13821 to No.13824, No.13831 to No.13838,
No.13880 to No.13911, No.13920 to No.13951,
No.13960 to No.13991
3226 Key for safety parameters
[Data type] 2-word
[Valid data range] 0 to 99999999
When the same value as the code for safety parameters is set in this
parameter, the key is opened to enable modifications to the safety
parameters. The value set in this parameter is not displayed. When the
power is turned off, the value set in this parameter is cleared, resulting
in the locked state.
CAUTION
Once a key is set, the key must be cancelled or
memory must be cleared before the safety
parameters can be modified. Moreover, the code for
the safety parameters cannot be modified. Be
careful when setting a code for safety parameters.