
Section 6 Linking Device LD 800DN
Configuration Recovery
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Configuration Recovery
Configuration Recovery can be enabled only if the
ADR
parameter is enabled.
Configuration Recovery is enabled by enabling the
Config Recovery
parameter of
the DeviceNet slave device. In Configuration Recovery, the DeviceNet device
configuration stored in LD 800DN is written into the slave device that replaces the
lost slave device.
Memory Space Limitations for Configuration Recovery
Every
Config Recovery
enabled slave device, which has user configurable
parameters, occupy some memory space in the linking device. The size of memory
available for this, in LD 800DN, is limited to 130560 bytes.
If the total size of the user configurable parameters of all
Config Recovery
enabled
devices exceed 130560 bytes, then Configuration Recovery will not work for the
DeviceNet devices. This is stated in a warning, shown during download, along with
the hardware tree positions of the devices. When this warning appears, perform
either of these:
•
Cancel the process and go online to disable the configuration recovery for some
slaves in Control Builder, so that other required devices can get this feature
enabled.
•
Ignore the warning. In this case, the Configuration Recovery will not be
enabled for some devices and they will have the warning in UnitStatus —
Keeper space exceeded. ADR not configured
.
Configuring ADR from Control Builder
Consider the following factors when you configure the ADR feature from Control
Builder:
•
For ADR feature to work, enable the parameter
ADR
in the hardware editor of
LD 800DN. By disabling this parameter, it disables
Address Recovery
and
Configuration Recovery
for all DeviceNet devices.
When Configuration Recovery is disabled, newly inserted DeviceNet device will
not be configured with the existing configuration parameters.
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