SBC PCD1 Series - Page 69

Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
CPUs and expansion housings
3-52
Backup of the user program
3
Restoringatext/DB,SYSWRK9001
Instruction:
SYSWR K 9001
1)
K number ; address of the texts/DBs as
; K constant or in a
; register, existing text/DB addresses in
; the range >= 4000 mAy be used
1) Alternatively,thevalue9001canbepassedinaregister.OnthePCD3,theinstruction
SYSWRK3001isusedforthesamefunction.Forreasonsofcompatibility,SYSWRK
3001 can also be used on the PCD1/2, but this alternative was only integrated into the
rmwareinthe2ndhalfof2004
Accu status after execution:
low: the text/DB has been restored and the process is
complete,sofurtherSYSWRK900xinstructionscanbe
executed immediately
high: the last instruction has not yet processed to completion;
beforefurtherSYSWRK900xinstructions,aSYSRD
K9000mustbeexecutedtocheckthereadinessofthe
ashcard
 WhenusingtheinstructionSYSWRK9001,notethefollowing:
● ASYSRDK9000mustbeexecutedbeforethisinstruction,totestwhetherthe
flash card is available and ready
● Iferrorsoccurduringprocessing,e.g.becausenoflashcardispluggedin,XOB13
willbeinvoked(wherepresent),ortheErrorLEDwillbeset