Troubleshooting When You Cannot Go Online From The Sysmac Studio; Causes And Correction When You Cannot Go Online From The Sysmac Studio - Omron NJ Series Troubleshooting Manual

2 Error Troubleshooting Methods
2-4 Troubleshooting When You Cannot
Go Online from the Sysmac Studio
The section describes the procedure to troubleshoot when you cannot go online with the CPU Unit from
the Sysmac Studio.
2-4-1 Causes and Correction When You Cannot Go Online from the
Sysmac Studio
The following table lists the possible causes when you cannot go online with the NJ-series CPU Unit
from the Sysmac Studio.
Cause
Incorrect settings or
faulty communica-
tions path
Fatal error in the CPU
Unit
High system service
load
Note If the EtherNet/IP NET ERR indicator on the CPU Unit is lit or flashing, it is possible that you cannot go online
through an EtherNet/IP route because of an error in the EtherNet/IP Function Module. See if you can go
online with a direct USB connection.
You can use the status of the RUN indicator on the CPU Unit to isolate the cause. Implement the trou-
bleshooting for the applicable cause.
RUN indicator
No lit.
Flashing at 3-s intervals.
Lit.
2-14
Description
There is a mistake in Refer to Troubleshooting Incorrect Settings and Faulty Communi-
the settings that the cations Path on page 2-15.
Sysmac Studio uses
to go online with the
CPU Unit. Or, the
communications path
is faulty.
A fatal error occurred Refer to 2-1-1 Checking to See If the CPU Unit Is Operating.
in the CPU Unit.
The system service Start in Safe Mode. Refer to Troubleshooting a High System Ser-
load on the CPU Unit vice Load on page 2-19.
is too high and time
cannot be obtained to
connect with the Sys-
mac Studio.
Incorrect settings or
faulty communications
path
Cause
---
Cause
Correction
Causes
Fatal error in the CPU
Unit
Cause
Cause (Incorrect Power
Supply Unit connected.)
---
NJ-series Troubleshooting Manual (W503)
High system service
load
---
---
Cause