Omron NX Series Hardware User Manual page 89

Indicator Color
POWER Green
RUN Green
ERROR
BUSY Yellow
SD PWR Green
NX-series NX502 CPU Unit Hardware User's Manual (W629)
Status
Lit.
Not lit.
Lit.
Flashing
at 2-s inter-
vals, then
flashing at
0.5-s inter-
vals.
Flashing
at 2-s inter-
vals contin-
ues for 30
seconds or
longer.
Not lit.
Red Lit.
Flashing
at 1-s inter-
vals.
Not lit.
Flashing
Not lit.
Lit.
Flashing
Not lit.
Meaning
Power is ON.
Power is not ON. Or, the power supply voltage is outside the al-
lowable voltage range.
The CPU Unit is in normal operation in RUN mode. (The user
program is in execution.)
The CPU Unit is starting (entering RUN mode or PROGRAM
mode at startup).
System initialization error occurs.
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)
Self-diagnosis found one of the following errors.
•
Controller error in the major fault level
•
CPU error
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 par-
tial control 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 Control-
ler 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.
The CPU Unit is in normal operation, a CPU reset is in prog-
ress, or monitored information occurred (CPU Unit operation
will continue.).
Built-in non-volatile memory access in progress.
Other than the above.
Power is being supplied to the SD Memory Card and the SD
Memory Card can be used.
A backup, restore or verification operation is in progress.
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.
3 Configuration Units
*1
3-7
3