Advantech WISE-4470 Series, User Manual

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35 WISE-4471 Series User Manual
Chapter 4
S
ystem
Configuration
4.2.8 Data Logger
The WISE-4471 series supports data logging. The I/O status can be logged in and
queried from the module. Before you start the log function, please ensure that the
RTC inside the WISE module has the correct time. A battery is used to store the time
in the RTC but there may be some discrepancy due to the accuracy of the RTC.
Data Configuration
To choose the method that will be used to log data, go to the
Log Conditions
section
in
Data Configuration
. Selecting the
By Period
check box enables periodic logging,
and the log period can be set in the following field (increment: 0.1 s; a value of "600"
here means that the I/O status will be logged every minute). If you select the
By
Communication WDT
check box, the I/O status will be logged once the WDT condi-
tion has been met.
All data can be stored even when the module is powered off. You can clear all data in
the logger when powering up the WISE module by selecting the
Clear Log when
Power Up
check box. When the memory is full, the logger will stop logging unless
you select the
Circular Log when Memory Full
check box, which will cause the
module to overwrite the memory.
To set which I/O channel's status will be logged and whether a change of the status
will also be logged, go to the
Channel Fields
tab. Note that the log memory will be
cleared when any parameters are changed in the
Channel Fields
or in
IO Fields
.
For digital channels, select the
Log Enabled
check box to periodically log the status
of the selected channel. Alternatively, select the
Change of State
check box to trig-
ger data logging when a status change occurs.