9 Troubleshooting
9 - 14
NX-series Digital I/O Unit User’s Manual (W521)
Event name NX Unit Clock Not Synchronized Error Event code 80240000 hex
Meaning An error occurred in the clock information between the EtherCAT Coupler Unit and the NX Unit.
Source Depends on where the Sysmac
Studio is connected and the sys-
tem configuration.
Source details NX Unit Detection
timing
Continuously
Error
attributes
Level Minor fault Recovery Restart the NX
Unit.
Log category System
Effects
User program
Continues. Operation The NX Unit will continue to operate.
Input data: Updating input values stops.
Output data: The output values depend on the Load
Rejection Output Setting.
Sys-
tem-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
There is a hardware error in the
NX Unit.
If the error occurred in only a spe-
cific NX Unit in the Slave Terminal,
replace the NX Unit.
If the error occurred in all of the
NX Units on the Slave Terminal
except for the System Units,
replace the EtherCAT Coupler
Unit.
None
There is a hardware error in the
EtherCAT Coupler Unit.
Attached
information
None
Precautions/
Remarks
None
Event name Previous Time Specified Event code 7001 0000 hex
Meaning A previous time was specified for output refreshing with a specified time stamp.
Source Depends on where the Sysmac
Studio is connected and the sys-
tem configuration.
Source details NX Unit Detection
timing
Continuously
Error
attributes
Level Observation Recovery Reset error in
the NX Unit.
Log category System
Effects User program Continues. Operation The output value that is specified for the previous
time is not output.
Sys-
tem-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
A mistake in the user program
caused the specification of a pre-
vious time.
Check the user program to see if it
specifies a previous time.
Check the user program to see if it
specifies a previous time.
A Communications Synchroniza-
tion Error caused a delay in the
I/O data reaching the NX Unit.
Refer to the corrections for the
Communications Synchronization
Error and take steps to prevent
the error.
Refer to the corrections for the
Communications Synchronization
Error and take steps to prevent
the error.
Attached
information
None
Precautions/
Remarks
None