Panasonic HMWIN - Page 205

Prameter Description
Note: This method applies only to unidirectional transfers (A->B or B->A).
On Update: Data transfer occurs whenever the value of the source tag changes.
Note: This method applies both to unidirectional and to bidirectional transfers
(A->B, B->A and A<->B).
Note: The Runtime cyclically monitors source tags changes (trigger tag
when using On Trigger or tags to transfer when using On Update) based on
Tag editor Rate parameter. If Rate setting for source Tag is 500 ms (default),
the system checks for updates every 500 ms.
Note: Changes on source tagsfaster than Rate may be not detected .
Trigger,
High limit,
Low limit
Tag that triggers the data transfer process. When this tag changes its value outside the
boundaries set as High limit and Low limit, data transfer is started. The range of
tolerance is recalculated according to the specified limits on the tag value which
triggered the previous update. No action is taken if the change falls within the limits.
This mechanism allows triggering data transfers only when significant variations of the
reference values occur.
Low limit is less or equal to zero.
Note: If both Low limit and High limit are set to "0", data transfer occurs
whenever the value of the trigger tag changes.
on Startup When selected, data transfer is forced:
l on HMI startup if the quality of the source tag is good
l after communication errors, when the associate device nodes return active
See "Objects" on page346 for details on quality.
Important: Data transfers executed on startup may have major impact
on the HMI device boot time. Enable this option only when necessary.
Example of limit setting
High limit = 1,9
Low limit = - 0,9
• = points where the data transfer is triggered
HMWIN Studio |User Manual| v206 (2017-06-30) | EN| © 2014-2017 Panasonic Electric Works Europe AG
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18 Data transfer