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7-10

Using EEPROMs for Program Storage SIMATIC 545/555/575 System Manual

7.3 Copying a Program into an EEPROM

Ensure that you have configured the CPU to select the desired EEPROM,

portable or on-board (refer to Section 7.2), and then continue with the steps

listed below.

1. Enter the program into the CPU. Verify that your program is correct,

and save your program to your programming unit hard disk.

2. Set the CPU to PROGRAM mode.

3. Select the TISOFT auxiliary function AUX 84 (or select the menu

command PLC Utilities → PLC Operations in SoftShop).

4. Use the Source Toggle option to select RAM as your program source.

5. Make any desired changes to the source program which is located in

RAM.

6. Use the Erase option to erase program data on the EEPROM.

7. Use the Copy option to copy the program from RAM to the EEPROM.

NOTE: The CPU does not allow changes to program memory during the

programming of the EEPROM.

8. Use the Source Toggle option to select either RAM or EEPROM as the

program source. (Refer to Table 7-3 for mode and memory status after

powerup, based on the battery status and program source selected.)

9. If you selected EEPROM as the program source, use TISOFT AUX 17

to check the program carefully while the CPU is in PROGRAM mode

before allowing the CPU to control equipment connected to the I/O.

WARNING

To minimize risk of potential injury to personnel or damage to equipment, check

the program before permitting a CPU to execute from an EEPROM program.

An incorrect program may cause unexpected operation of the process which

can cause death or serious injury to personnel, and/or damage to equipment.

You must be absolutely certain that the EEPROM program is correct. Take

standard precautions associated with program development and debug.

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Siemens SIMATIC TI500 Especificaciones Pagina 210