Type Overview Operation
Other Errors Errors other than those
given above
The Safety CPU Unit will continue operation.
Refer to the list of errors for details.
Events are recorded in the log when the Safety CPU Unit is accessed by the Sysmac Studio.
Type Overview Operation
User access log The Safety CPU Unit was accessed by the
Sysmac Studio.
The Safety CPU Unit will continue operation.
Safety I/O Units
The errors that can occur in the Safety I/O Units and the operation that is performed for each are de-
scribed in the following table.
Type Overview Operation
System error Errors that occur in hardware self-di-
agnosis in the Safety I/O Units
The Safety I/O Unit will stop.
Communica-
tions errors
Errors that occur in safety process
data communications with the Safety
CPU Units
The Safety I/O Unit will continue operation.
The Safety I/O Unit will make the safety I/O data inac-
tive (OFF).
Safety I/O er-
rors
Errors that occur in safety I/O in the
Safety I/O Units
The Safety I/O Unit will continue operation.
Safety process data communications will continue.
The safety I/O data will become inactive (OFF).
Other errors Errors other than those given above The Safety I/O Unit will continue operation.
Refer to the list of errors for details.
Events are recorded in the log when the Safety I/O Unit is accessed by the Sysmac Studio.
Type Overview Operation
User access log The Safety I/O Unit was accessed by the Sys-
mac Studio.
The Safety I/O Unit will continue operation.
12 Troubleshooting
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NX-series Safety Control Unit User's Manual (Z930)