Mitsubishi MELSEC-A Series Operating Manual page 126

6. HOW TO USE EACH FUNCTION
MELSEC-A
[Explanation]
--..I
(1)
Operation of "1:PARAM. ALL CLEAR" sets the parameters in the A8PUE
to default.
(2) If
writing to ACPU has not been executed and the mode is transferred to
the OTHERS mode after operating "1 : PARAM. ALL CLEAR", $he param-
eters in the A8PUE return to the setting before operating "1 : PARAM. ALL
CLEAR".
(3) If the key word is registered, parameter all clear cannot be executed.
I
REMARK
I
The parameter in the A8PUE is set to a set value read
from
ACPU when starting up the A8PUE.
POINTS
1
When executing parameter all clear, if the key word registered in the
ACPU is unknown, see the "PC memory all clear" operation shown in
Section 5.1.3. And then, clear (delete) the unknown registered key
word.
If
"PC memory all clear" is executed, all other user data (such as
sequence programs) will also be cleared.
Section
6.8.2
gives details about when (a) the key word registered in
an ACPU is changed, or (b) a new key word is registered.
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