Omron NX1P2 series User Manual

6 Troubleshooting
6 - 2
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6-1 Operation after an Error
This section describes the error status of the NX1P2 CPU Unit and the operation that occurs after an
error is detected. Refer to 6-2 Troubleshooting for details on corrections for specific errors. Refer to the
NJ/NX-series Troubleshooting Manual (Cat. No. W503) for all of the errors that may occur in an NX
Series.
You can check the operation status of the CPU Unit with the indicators (POWER, RUN, and ERROR
indicators) at the center front of the CPU Unit.
The following table shows the status of front-panel indicators, the status of user program execution, and
the ability to connect communications to the Sysmac Studio or an HMI during startup, during normal
operation, and when errors occur.
6-1-1 Overview of NX1P2 CPU Unit Status
CPU Unit operating status
CPU Unit User
program
execution
status
Communications
with Sysmac
Studio or an HMI
POWER
(green)
RUN (green) ERROR (red)
Startup
Lit Flashing
(2-s intervals
followed by
0.5-s inter-
vals)
Not lit Stopped. Not possible.
Normal opera-
tion
RUN mode Lit Lit Not lit Continues. Possible.
PROGRAM mode Lit Not lit Not lit Stopped.
Fatal error in
CPU Unit
Power Supply
Error
*1
Not lit Not lit Not lit Stopped. Not possible.
Hardware Initializa-
tion Error
*1 *2
Lit No Lit No Lit Stopped.
CPU Unit Reset
*1
Lit Not lit Not lit Stopped.
CPU Unit Error
*1
Lit Not lit or
Flashing (2-s
intervals or
0.5-s inter-
vals)
Lit Stopped.
System Initializa-
tion Error
*1
Lit Flashing (2-s
intervals) for
30 s or longer
Not lit Stopped.
POWER indicator
RUN indicator
ERROR indicator

Omron NX1P2 series Specifications

General

Brand	Omron
Model	NX1P2 series
Category	Controller
Language	English