SBC PCD3 Series - Memory Structure of the Saiapcd3 Systems

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
3-53
3
3.18.4 Memory structure of the SaiaPCD3 systems
Colour legend
RAM 
Program memory + DB/Text (ROM) a File system f
DB / Text (RAM) b
Flash memory expansions (optional)
File system (user area / alarming) c Extension module f
Data / media (R/F/T/C, clock, history, etc.) d
Operating system (OS, init data) e DB backup
The sizes of the colour blocks on this page and on the next page do not match the
e󰀨ectivememorysizeratio!
PCD3.M2130V6
Flash memory
internally
RAM
SRAM
db ca e
Backup
DB
PCD3.M2330 A4T5 WAC
f Extension module
Flash memory
Flash memory
extensions
RAM
SRAM
db ca e
DB
f Backup
DB
PCD3.M3120, PCD3.M3330
DB
Activity
Busy
Write
Diag
User
Flash ROM expan-
sions
Flash memory
internally
RAM
SRAM
db ca e
=
Slot0 Slot1 Slot2 Slot3
DB DB DB
f Backup
DB
PCD3.M3160, PCD3.M3360
DB
FlashmemoryμSD
card internal
db c
fa b e Backup
Activity
Busy
Write
Diag
User
Flash ROM
expansions
RAM
SRAM
=
DB
Slot0 Slot1 Slot2 Slot3
DB DB DB