23
Precautions for Correct Use
NX-series Safety Control Unit User’s Manual (Z930)
• The task period affects the safety response performance. If the task period changes due to changes
in the configuration or programs, recalculate the safety reaction times.
• If you change the I/O for a variable to publish to a Standard CPU Unit, the device variable assign-
ments to the Safety CPU Unit will be cancelled. In this case, you need to assign the device variables,
and then transfer the settings and programs to the Standard CPU Unit.
• If you change the variables to publish to a Standard CPU Unit, you must transfer the settings and pro-
grams to the Standard CPU Unit. After you transfer the settings and programs, check that the opera-
tion of the Standard CPU Unit is correct.
• If you change the variables to publish to an EtherNet/IP Coupler Unit, you must change the I/O allo-
cations of the EtherNet/IP Coupler Unit. Check that the operation of the EtherNet/IP Coupler Unit is
correct.
• For security purposes, we recommend that you set a password for the Safety CPU Unit and the proj-
ect file.
• Do not disassemble, repair, or modify the Safety Control Unit. Doing so may lead to loss of safety
functions.
• Be careful not to injure yourself when dismantling the Safety Control Unit.
Debugging
Periodic Inspections and Maintenance
Disposal
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