SBC PCD1 Series - 3.17 Backup of the user program (flash card for PCD2.M170;M480)

Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
CPUs and expansion housings
3-47
Backup of the user program
3
On the PCD2.M170 and M480 the whole cover does not have to be removed; it is
sufcienttoopenthebatterycompartmentonthesidetogainaccesstothebattery.
PCD2.M170/480:
Battery box
(Pull cover towards
you to open)
3.17 Backupoftheuserprogram(ashcardforPCD2.M170/M480)
3.17.1 General
The PCD2.M170 and PCD2.M480 are equipped with 1 MByte of RAM as standard
andcanbettedwithanoptionalPCD7.R400ashcard.Theashcardmakesit
possible to save a failsafe copy of the application after downloading (code, text/DBs
and extension memory).
WerecommendttingallPCD2.M170andM480unitswiththeashcard,toavoid
any accidental loss of data.
 Evenwithbackuptotheashcard,thesourcelesfortheprojectmustberetained,
as the application is only stored in the Saia PCD
®
as machine code.
LOAD switch
Itisalsopossibletousetheashcardtotransferapplicationsfromonecontrollerto
another, and to create a backup of RAM texts and DBs in extension memory (address
≥4000)whilethecontrollerisinoperation.
 Theashcardmustnotbepluggedinorremovedwhiletheunitisswitchedon.
IfittranspireswhenthePCD2.M170/M480isstartedupthatoneoftheRAM
memorieshasbeencorrupted(e.g.afterapoweroutagewithaatormissing
battery), the application is automatically copied to the Saia PCD
®
.