Omron NX-SL3300 User Manual page 400

10 Safety Unit Restore
Change the DIP switch settings and start the Safety CPU Unit in the Restore mode then execute the
Safety Unit Restore using the SD Memory Card.
The node name and safety password stored in the Safety CPU Unit to restore must be consistent with
those stored in the Safety Unit Restore File or unchanged from the factory default settings.
Precautions for Correct Use
To execute the Safety Unit Restore, you need to execute the restore function for the NX102
CPU Unit as well. In addition, you need to generate a safety backup file and a backup file of the
NX102 CPU Unit from a same project or from a same physical unit from which a project is
transferred. If the settings for the safety backup file and that for the backup file of the NX102
CPU Unit are not consistent, the safety control unit does not operate normally.
Procedure
Processing stage
Insert an SD Memory Card
Start RESTORE Mode
Initializing
Wait for Start command
10 - 4
Procedure and Display
Insert the SD Memory Card where the Safety Unit Restore File are stored under
the root directory into the NX102 CPU Unit.
Set the pins 1 to 4 of the DIP switch on the Safety CPU Unit as follows: 1 to ON,
2 to OFF, 3 to OFF, and 4 to OFF, and turn ON the power supply to the Control-
ler. The Safety CPU Unit starts in RESTORE mode.
Seven-segment indicators in the Safety CPU Unit repeat turning ON and OFF in
sequence for each, to test if the devices are lit properly.
•
If initialization ended in an error, an error code is shown in the seven-segment
indicators in the Safety CPU Unit.
The safety signature of the Safety Unit Restore File stored in the SD Memory
Card is repeatedly shown as a four-digit hexadecimal number in the seven-seg-
ment indicators in the Safety CPU Unit.
(Example: Supposing the safety signature is 0xABCD)
Check the safety signature. If it is correct, press and hold the service switch for
one second or more and release.
Processing starts.
NX-series Safety Control Unit User's Manual (Z930)