Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Memory space on the PCD
PCD2.M5_ Classic CPUs and expansion housings
3-40
3
Restoring a text/DB from the flash card with
SYSWR K 3001
Restoring a text/DB from the onboard flash with
SYSWR K 3101
Instruction:
SYSWR K 3x01
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 3x01 can be passed in a register.
Battery status after execution:
low:
the text/DB has been restored and the process is
complete, so further SYSWR K 3x0x instructions can be
executed immediately
high:
the last instruction was not processed to completion;
before further SYSWR K 300x instructions, a SYSRD
K 3x00 must be executed to check the readiness of the
flash card
When using the instruction SYSWR K 3x01, note the following:
●
It is strongly recommended to execute a SYSRD K 3x00 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 called where it is present, or the error LED will be set
