Storage Elements

Lithium battery

Purpose

The processor modules are supplied without lithium battery. It must be ordered separately. The TA521 lithium battery is used for data (SRAM) and RTC buffering while the processor module is not powered.

See AC500 Battery: AC500 Battery

The CPU monitors the discharge degree of the battery. A warning is issued before the battery condition becomes critical (about 2 weeks before). Once the warning message appears, the battery should be replaced as soon as possible.

The technical data, handling instructions and the insertion/replacement of the battery is described in detail in chapter TA521 Lithium Battery: TA521 - Lithium Battery

Memory Card

AC500 processor modules are supplied without memory card. It must be ordered separately.

The memory card can be used

• to read and write user files
• for firmware updates

Detailed information can be found in the System Technology chapter: System Processing

AC500 processor modules can be operated with and without memory cards. The processor module uses a standard file system (FAT; filenames stored in 8.3 format, on memory card). This allows standard card readers to read and write the memory cards (MC502).

Note

Only genuine MC502 memory cards are supported.

For more information on the technical data, handling instructions and the insertion/replacement of the memory card, please refer to the chapter Memory Card MC502: MC502 - SD Memory Card