Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
Storage space on the PCD3
PCD3.Mxxx0 Classic CPU and expansion enclosure
3-52
3
If the contents of the RAM are lost due to an empty battery/SuperCap in the event
of a power failure, the media, texts and DB are initialized with the current backup
values before startup.
Available extension memory backup (data backup) size
The extension memory backup can be used to copy contents of DB and texts to
Flash during runtime (using the instructions SYSWR K 3x00).
The size of the extension memory backup is independent of the size of the user
program and is always available. The maximum size of the DBs that can be copied
to it is half of the extension memory backup size.
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