OverviewΒΆ
AC500 PLCs offer a variety of storage devices. The following table gives a short overview and a description on these storage devices:
Note
IEC access means that the storage device can be accessed by Function Blocks of an IEC program.
FTP access means that the device can be accessed via FTP server on the PLC (if available).
| Component | Description | IEC Access | FTP Access | CPUs AC500 V3 |
|---|---|---|---|---|
userdisk home/userdisk (customer data) |
User disk for custom data (flash) Internal persistent mass storage placed in the internal flash device Can be used for any application purpose |
Yes | Yes | All |
PlcLogic home/PlcLogic (customer data) |
Internal persistent mass storage placed in the internal flash device Used for configuration data, user application (boot project), WEB visu files, etc. |
Yes | Yes | All |
| SRAM | Battery-buffered device, non-volatile RAM Used for retain/ persistent and ProzM variables |
Yes | No | All |
| system | System RAM disk (Temp directory) for storing the firmware For internal firmware use only! |
Yes | No | All |
| flashdisk | Internal persistent mass storage device Can be used for any application purpose |
Yes | Yes | PM5675-2ETH |
| sdcard | SD memory card (removable) Removable persistent mass storage device Can be used for any application purpose |
Yes | Yes | All |