User Manual

Technical Manual for Master Terminals of the Series IF 152x
Page 4
Memory
The master terminal IF 1525 is equipped with the following memory:
• CMOS-RAM
• Flash-PROM
• D-RAM
CMOS-RAM, 1 MB
The check sum of the application software as well as user-specific data, which is loaded via host, is
stored in the CMOS-RAM.
The CMOS-RAM is power supplied by a lithium battery. Therefore, data is also preserved in case of
down time of the main power supply.
Flash-PROM
The following software is stored in the Flash-PROM:
• operating system software
• network software (drivers)
• application software
If the storage capacity is not sufficient, memory can be expanded.
D-RAM
A main memory is available for the operating system.