XW2Z-200J-B9 Omron, XW2Z-200J-B9 Datasheet - Page 26

• Manufacturer Part Number: XW2Z-200J-B9
• Description: CONNECTOR CABLE 2M
• Manufacturer: Omron

Specifications of XW2Z-200J-B9

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: XW2Z200JB9

Data Backup by Capacitor
Backing Up DM Area Data in Flash Memory
2. The backup time of the super capacitor is reduced as the capacitor ages.
The data in the DM Area and error log will become unstable or corrupted if the
power to the system is OFF for longer than the backup time.
If the power supply is to be turned OFF for an extended period of time, use
D20000 to D32767 in the Coordinator Module, which is backed up in flash
memory, to store data.
Otherwise, the Memory Not Held Flag (A316.14) can be used as the input
condition for programming using data in areas stored for power interruptions
to perform suitable processing.
A316.14: Turns ON when power is turned ON if data stored for power interrup-
tions in the DM Area or error log is corrupted.
DM Area words D20000 to D32767 in the Coordinator Module can be backed
up in flash memory as described in the next section. DM Area words D00000
to D29999 in the Motion Control Module can also be backed up to flash mem-
ory, but a password must be set in A752 and control bit A751.15 must be
turned ON to save this data.
DM Area words D20000 to D32767 in the Coordinator Module are read from
flash memory when the power supply is turned ON. In addition, DM Area
words D00000 to D29999 in the Motion Control Module are read from flash
memory when the power supply is turned ON if the System Setup is set to
read DM data at startup. We recommend using DM Area words D20000 to
D32767 in the Coordinator Module to store operating parameters and other
data required for system operation and then using the DM transfer function to
transfer the data from the Coordinator Module to the Motion Control Modules
at the start of operation.
A316.14
It is also affected by the ambient temperature. Use portion of the DM Area
backed up by the super capacitor only for data that is to be held during mo-
mentary power interruptions. For operating parameters and other long-
term data, use the portion of DM Area stored in flash memory in the Coor-
dinator Module and transfer it to the Motion Control Modules before start-
ing operation.
Processing for
corruption of data
backed up for
power interruptions
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