Omron NX701-1620, User Manual

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3 Configuration Units
NX-series CPU Unit Hardware User’s Manual (W535)
3-1 C
P
U
Unit
s
3
3-
1-2 Par
t Names and F
unctions
The following table describes these indicators.
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
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 Controller
error in the partial fault level occurred.
Operation will continue for the Function Module in which a Con-
troller 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 con-
tinue.)
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.
*1
*1. Refer to the NJ/NX-series CPU Unit Software User’s Manual (Cat. No. W501) for details on backing up data.
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.