Watlow Series PD - Manual (Page 167)

Upon activation of the Data_Log_Read input, the internal value will be read into
the tag named Data_Logging_Interval.
Not much changes in the write example. The obvious changes are that the
service now becomes a set operation and there needs to be a source tag (holding
the new interval). In this case the data type is defined as an INT so the source
length is two bytes. As in the configuration above, to complete the configuration,
click on the communication tab and define the path to the PD.
When the tag named “Data_Log_Write is enabled the new logging interval will be
sent out to the PD.
4.0 Changing the Assembly Size
The assembly object within the PD was built in such a way that there is a Static Assembly
which cannot be changed and a Dynamic Assembly which can be built by the user. The
Dynamic Assembly, input or output, becomes available along with the Static Assembly only
after the size has been changed.
Note:
Implicit messaging should be and must be disabled when changing the size of either
assembly. Failure to do so will generate errors.
Figure 3.1.2b
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