Summary of Memory Card Functions

The AC500 controller contains a FLASH memory card of the type SD Memory Card (in short SD card) as external storage medium which is accessed by the CPU like a floppy disk drive. The SD card is used to transfer data between a commercially available PC with SD card interface and the AC500.

Caution

:strong:Removal of the SD Card

Do not remove the SD card during access. Remove only when the RUN LED does not blink. Otherwise the SD card and/or files on it might get corrupted and/or normal PLC operation might be disturbed.

In the AC500, the SD card can be used to:

• update the AC500-CPU processor firmware
• update the CPU boot code
• update the display controller firmware (as of version V2.0)
• update of the RTC_Batt module (eCo)
• update of the Onboard I/O firmware (eCo)
• update the Communication Module firmware (as of version V1.2.0)
• load and save user programs (boot project)
• load and save the source code of the user program
• load and save retentive variables (RETAIN, %R area)
• load and save user data (with blocks)

The SD card can be operated by:

• writing/reading files using a standard PC card reader with SD card interface
• specific PLC-Browser commands
• reading and writing data from the user program using specific blocks
• using FTC client (firmware version > V2.1.x and onboard Ethernet CPU)