Data transfer based on the On Trigger mode should be preferred since it allows you to force the transfer and monitors only
the trigger tags and not all the tags involved in the transfer.
On update method
The On update method allows changing the values in accordance with the direction settings only when the source value
changes.
Using the On Update method you force the system to continuously read all the defined source tags to check if there are
changes that need to be transferred. The default value of the update rate of each tag is 500 ms and can be modified with
Tag editor.
Performance observations
Data transfer performance depends on:
l number of data transfers defined,
l number of data transfers eventually occurring at the same time,
l frequency of the changes of the PLC variables that are monitored,
Important: Always test performance of operation during project development.
Important: If inappropriately set, data transfer tasks can lead to conditions where the tags involved
create loops. Identify and avoid such conditions.
Tip: Use the scheduler to calibrate the update rate based on the performance of your entire project.
Tip: Use array type tags to optimize data transfer and reduce workload.
Tip: Reduce the number of data transfers to reduce page change time and boot time.
HMWIN Studio |User Manual| v206 (2017-06-30) | EN| © 2014-2017 Panasonic Electric Works Europe AG
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18 Data transfer
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