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FX
3S
 Series Programmable Controllers
User's Manual - Hardware Edition
11
Bui
lt-
in Anal
og
12
O
utpu
t Wi
ring
13
Wiri
ng for
Va
rious U
ses
14
Te
st R
un,
M
ain
tenanc
e,
Troub
le
shooting
15
Oth
er Ex
tensi
on
U
nit
s and
Opti
ons
16
Displ
ay
 Modul
(FX
3S
-5
D
M
)
17
Me
m
ory
C
ass
ette
A
Spec
ial D
evices 
(M
8000-,
 D8000-)
B
Instruc
tion Li
st
C
Di
sc
onti
nued
model
s
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.7 Troubleshooting
14.7.3 Cautions in registering keyword
1. Cautions in registering keyword
The keyword limits access to the program prepared by the user from peripheral devices.
Keep the keyword carefully.
If you forget the keyword, you cannot operate the PLC online from the programming tool depending on the
type of the programming tool and the registered keyword.
2. Caution on using a peripheral device which does not support the second keyword and 
customer keyword
Sequence programs in which the second keyword and customer keyword are registered cannot be all-cleared
using a peripheral device that does not support the second keyword and customer keyword.
3. Non-resettable protect function
When the non-resettable protect function is set, the protect function cannot be reset.