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Indicator
Color
Status
Meaning
RUN
Green
Lit.
The CPU Unit is in normal operation in RUN mode. (The user program
is in execution.)
Flashing
at 2-s intervals,
then flashing at
0.5-s intervals.
The CPU Unit is starting (entering RUN mode or PROGRAM mode at
startup).
Flashing
at 2-s intervals
continues for
30 seconds or
longer.
System initialization error occurs.
Not lit.
Operation is stopped in PROGRAM mode, when a CPU Unit reset is in
progress, or when any of the following errors occurs.
•
Controller error in the major fault level
•
CPU error (WDT error)
ERROR
Red
Lit.
Self-diagnosis found one of the following errors.
•
Controller error in the major fault level
•
CPU error
Flashing
at 1-s intervals.
Self-diagnosis found one of the following errors.
•
Controller error in the partial fault level (an error in which all control
of a Function Module is disabled)
•
Controller error in the minor fault level (an error in which partial con-
trol of a Function Module is disabled)
CPU Unit operation will continue for either of these errors.
Operation will stop for the Function Module in which a Controller error
in the partial fault level occurred.
Operation will continue for the Function Module in which a Controller
error in the minor fault level occurred.
Not lit.
The CPU Unit is in normal operation, a CPU reset is in progress, or
monitored information occurred (CPU Unit operation will continue.).
BUSY
Yellow
Flashing
Built-in non-volatile memory access in progress.
Not lit.
Other than the above.
SD PWR
Green
Lit.
Power is being supplied to the SD Memory Card and the SD Memory
Card can be used.
Flashing
A backup, restore or verification operation is in progress.
Not lit.
The power supply for the SD Memory Card is stopped, an SD Memory
Card is not mounted, or the file format of the mounted SD Memory
Card is not supported.
SD BUSY
Yellow
Flashing
SD Memory Card access in progress.
Not lit.
SD Memory Card access not in progress.
*1.
Refer to the
NJ/NX-series CPU Unit Software User’s Manual (Cat. No. W501)
for details on backing up data.
3 Configuration Units
3-8
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
Summary of Contents for NX1P2 series
Page 8: ...Manual Structure 6 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 52: ...Revision History 50 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 82: ...2 System Configuration 2 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 258: ...Appendices A 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 259: ...I Index I 1 NX series NX1P2 CPU Unit Hardware User s Manual W578 I...
Page 262: ...Index I 4 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Page 263: ......