Omron NX701-1620 User Manual

7 Troubleshooting
7-3
NJ/NX-series Database Connection CPU Units User’s Manual (W527)
7
7-1 Overview of Errors
7-1-1 How to Check for Errors
7-1-1 How to Check for Errors
You can check to see if an error has occurred with the following methods.
Checking method
What you can check
Checking the indicators
CPU Unit operating status
Checking with the troubleshooting function
of Sysmac Studio
You can check for current Controller errors, a log of past Controller
errors, error sources, error causes, corrections, and error log of
CJ-series Special Units.
*1
Checking with the Troubleshooter of an
HMI
*2
You can check for current Controller errors, a log of past Controller
errors, error sources, causes, and corrections.
Checking with instructions that read function
module error status
You can check the highest-level status and highest-level event code
in the current Controller errors.
Checking with system-defined variables You can check the current Controller error status for each function
module.
*1 Detailed information such as error causes and corrections are not displayed.
*2 To perform troubleshooting from an HMI, connect the HMI to the built-in EtherNet/IP port on the CPU
Unit.
This section describes the above checking methods.
Checking the Indicators
You can use the PWR indicator on the Power Supply Unit and the RUN and ERROR indicators
on the CPU Unit to determine the event level for an error. The following table shows the
relationship between the Controller’s indicators and the event level.
Indicator CPU Unit operating status Error confirmation with Sysmac
Studio or an HMI
PWR RUN ERROR
Not lit Not lit Not lit Power Supply Error Not possible:
Refer to the NJ/NX-series
Troubleshooting Manual (Cat. No.
W503).
Lit Not lit Not lit CPU Unit Reset
*1
Lit Flashing Lit Incorrect Power Supply Unit
Connected
Lit Not lit Lit CPU Unit Watchdog Timer Error
*2
Lit Not lit Lit Major fault level
*2
Possible:
Connect the Sysmac Studio or an HMI
and check the cause of and correction
for the error in the troubleshooting
functions of Sysmac Studio or the
Troubleshooter of an HMI.
Lit Lit Flashing Partial fault level
Lit Lit Flashing Minor fault level
Lit Lit Not lit Observation
Lit Lit Not lit Normal operation in RUN mode ---
Lit Not lit Not lit Normal operation in PROGRAM
mode
*1
---
Lit Flashing Not lit Normal operation in startup state ---
*1 If you can go online with the CPU Unit from Sysmac Studio with a direct USB connection, the CPU
Unit is in PROGRAM mode. If you cannot go online, the CPU Unit is being reset.
*3
*2 If you can go online with the CPU Unit from Sysmac Studio with a direct USB connection, a major fault
level error has occurred. If you cannot go online, a watchdog timer error has occurred in the CPU
Unit.
*3
*3 If you cannot go online with the CPU Unit from Sysmac Studio, it is also possible that the USB cable is
faulty or that the network type on Sysmac Studio is not set for a direct USB connection. Refer to the
NJ/NX-series Troubleshooting Manual (Cat. No. W503) if you cannot go online with the CPU Unit.

Omron NX701-1620 Specifications

General

Brand	Omron
Model	NX701-1620
Category	Controller
Language	English