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
3-47
3
Despite backup to the flash card, the source files of the project must be retained,
as the application is only stored in machine code in the Saia PCD
®
.
If the RAM memory is corrupted when the PCD3 starts up (for example, after a
power failure with a discharged or missing battery), the application is automatically
reloaded from the flash backup memory. This can be checked with the STL Test
instruction and the 400 operand.
All hardware settings are also stored on the Flash Backup Memory (onboard or on
a Flash Card) during a backup.