Operation After An Error; Overview Of Nx1P2 Cpu Unit Status - Omron NX1P2 series User Manual

6 Troubleshooting
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.
6-1-1

Overview of NX1P2 CPU Unit Status

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.
POWER indicator
RUN indicator
ERROR indicator
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.
CPU Unit operating status
Startup
RUN mode
Normal opera-
tion
PROGRAM mode
Power Supply
*1
Error
Hardware Initializa-
tion Error
CPU Unit Reset
Fatal error in
CPU Unit
CPU Unit Error
System Initializa-
tion Error
6 - 2
POWER
RUN (green)
(green)
Lit Flashing
(2-s intervals
followed by
0.5-s inter-
vals)
Lit Lit
Lit Not lit
Not lit Not lit
Lit No Lit
*1 *2
*1 Lit Not lit
Lit Not lit or
Flashing (2-s
*1
intervals or
0.5-s inter-
vals)
Lit Flashing (2-s
intervals) for
*1
30 s or longer
CPU Unit
ERROR (red)
Not lit
Not lit
Not lit
Not lit
No Lit
Not lit
Lit
Not lit
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)
User
Communications
program
with Sysmac
execution
Studio or an HMI
status
Stopped. Not possible.
Continues. Possible.
Stopped.
Stopped. Not possible.
Stopped.
Stopped.
Stopped.
Stopped.