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saia-pcd.com
PCD1.M2xxx
PCD3.Mxx6x
PCD7.D4xxVT5F
PCD2.M5xxx
PCD3.M3xxx
PCD3.M554x
PCD3 Compact
PCD3.WAC
Automation stations – the basics
Automation devices with integrated μSD card
The automation devices Saia PCD3 Plus, Saia PCD1.M2 and the programmable panel are provided with an onboard μSD
flash card. When loading a user application with Saia PG5®, all the necessary files in the internal flash memory are
stored on the μSD card. If the operating voltage is connected to the automation device and there is no executable
program in the user memory, COSinus attempts to load a valid program from the μSD card on startup.
Memory management of the Saia PCD® systems with COSinus operating system
Automation devices with no integrated onboard flash
In the case of automation devices with no integrated μSD card and which are equipped with the COSinus system, the user
application is copied direct to the user memory from Saia PG5®. If no valid program is detected in the user program when the
controller is started up, a search is executed for a backup program in the onboard flash or an optional memory module.
Saia PCD1.M2xxx
Saia PCD2.M554x
Saia PCD3.Mxx6x
Saia PCD3.Mxx4x
Saia PCD7.D4xxVT5F
Saia PCD3.M3xxx
Saia PCD3.Compact
Saia PCD3.Wide Area Controller
Loading of the user program from Saia PG5® onto Saia PCD® automation devices and allocation of different data between the storage
media.
DRAM
SRAM Media (R, T, F)
File system
Configuration
SRAM data
User program
RIO application
load as required
RAM
MicroSD flash card
DRAM
RAMTEXT/DB
RAMTEXT/DB
SRAM
SRAM
User program
ROMTEXT/DB
User program
ROMTEXT/DB
Media (R, T, F)
Media (R, T, F)
Onboard flash
RAM
Save
if required
File system
