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14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.7 Troubleshooting
223
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
11
High-Speed
Counters
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
Input/Output
Powered
Extension Units
16
Input/Output
Extension
Blocks
17
Extension
Power Supply
Unit
18
Other Extension
Units and
Options
19
Display Module
20
Terminal Block
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 (such as GX
Developer whose earlier than Ver. 8.72A).
3. Non-resettable protect function
When the non-resettable protect function is set, the protect function cannot be reset.