SBC PCD3 Series - Page 70

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ashcard,thesourceles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ash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.