3 Configuration Units
3-12
NJ-series CPU Unit Hardware User’s Manual (W500)
• Keep the following precautions because an SD Memory Card may become unusable.
• Do not turn OFF the power supply to the Controller while the SD BUSY indicator is lit (i.e., while
SD Memory Card access is in progress). The SD BUSY indicator is lit when the SD Memory Card
is accessed from user the programming or from a computer through FTP.
• Do not remove the SD Memory Card while the SD BUSY indicator is lit or the SD PWR indicator is
lit (i.e., while SD Memory Card power is supplied). Press the SD Memory Card power supply
switch and confirm that the SD BUSY indicator or SD PWR indicator is not lit before you remove
the SD Memory Card.
• Never insert the SD Memory Card facing the wrong way. If the SD Memory Card is inserted forcibly, it
may become unusable.
• To format the SD Memory Card (e.g., to delete all of the data), insert the SD Memory Card in the CPU
Unit and perform the operation from the Sysmac Studio.
• The SD Memory Card uses flash memory, and so its service life is limited. When the end of the SD
Memory Card's service life approaches, the ability to write data is lost, and data is sometimes not
retained after writing. The service life depends on the size of the data that is written and on the ambi-
ent temperature. For the unlikely event that data is lost, it is recommended to periodically back up
data.
• The service life may be extremely short if a non-OMRON SD Memory Card is used. Also, operation
may be affected due to deterioration in writing performance.
• If you use an OMRON SD Memory Card, the end of the life of the SD Memory Card can be detected
in the following ways.
• System-defined variable _Card1Deteriorated (SD Memory Card Life Warning Flag)
• SD Memory Card Life Exceeded (Observation) event in the event log
1 Pull the left side of the SD Memory Card cover forward and remove from the Unit.
2 Insert the SD Memory Card with the label facing to the left. (Insert the SD Memory Card with the
label facing the triangle on the CPU Unit.)
3-2-3 Installing and Removing
Before Using an SD Memory Card
Installing the SD Memory Card
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