Using A Memory Cartridge To Store Your Program - Siemens Simatic S7-200 System Manual

7.5

Using a Memory Cartridge to Store Your Program

Some CPUs support an optional memory cartridge that provides a portable EEPROM
storage for your program.You can use the memory cartridge like a diskette. The CPU stores
the following elements on the memory cartridge:
User program
Data stored in the permanent V memory area of the EEPROM
CPU configuration
For information about the memory cartridge that is appropriate for your CPU, see
Appendix A.
Copying to the Memory Cartridge
You can copy your program to the memory cartridge from the RAM only when the CPU is
powered on and the memory cartridge is installed.
Caution
!
Electrostatic discharge can damage the memory cartridge or the receptacle on the CPU.
Make contact with a grounded conductive pad and/or wear a grounded wrist strap when
you handle the cartridge. Store the cartridge in a conductive container.
You can install or remove the memory cartridge while the CPU is powered on. To install the
memory cartridge, remove the protective tape from the memory cartridge receptacle, and
insert the memory cartridge into the receptacle located under an access cover of the CPU
module. (The memory cartridge is keyed for proper installation.) After the memory cartridge is
installed, use the following procedure to copy the program.
1. If the program has not already been downloaded to the CPU, download the program.
2. Use the menu command CPU
memory cartridge. Figure 7-20 shows the elements of the CPU memory that are stored
on the memory cartridge.
3. Remove the memory cartridge (optional).
RAM
User program
CPU configuration
V memory
M memory
Timer and counter
current values
Figure 7-20
S7-200 Programmable Controller System Manual
C79000-G7076-C230-02
CPU Memory: Data Types and Addressing Modes
Program Memory Cartridge to copy the program to the
User program
CPU configuration
Memory
Cartridge
Copying the CPU Memory to the Memory Cartridge
EEPROM (Permanent)
User program
CPU configuration
V memory
(permanent area)
M memory
(permanent area)
V memory (permanent area)
7-17