<4. Control Application Creation>
4.8 Precautions About Downloading
A control application can be downloaded to the FCN-500 or FCN-RTU after
successful compile. This section describes some precautions about
downloading.
For details on this topic, read the online help documentation shown below.
TIP
In this document, unless otherwise stated, download refers to downloading a project to the main
memory.
4.8.1 Offline Download and Online Download
A control application can be downloaded in offline mode or online mode.
- Offline download
There are no restrictions associated with offline downloading except that control
operation on the FCN-500 or FCN-RTU stops at the time of download.
SEE ALSO
For details on the relationship between start mode and retain data after offline downloading, see
Section 2.2.5, “Retentive Variables (Retain Data) Considerations.”
- Online download
Online download allows changes to be made to a control application without
stopping control operation on the FCN/FCJ.
However, online download limits some of application modification.
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