Use the memory card either as transfer card or as a program card. Any program that you copy to the memory card contains all of the code blocks and data blocks, any technology objects, and the device configuration. The program does not contain force values.

• Use a transfer card to copy a program to the internal load memory of the CPU without using STEP 7 Basic. After you insert the transfer card, the CPU first erases the user program and any force values from the internal load memory, and then copies the program from the transfer card to the internal load memory. When the transfer process is complete, you must remove the transfer card.

  You can use an empty transfer card to access a password-protected CPU when the password has been lost or forgotten. Inserting the empty transfer card deletes the password-protected program in the internal load memory of the CPU. You can then download a new program to the CPU.

• Use a program card as external load memory for the CPU. Inserting a program card in the CPU erases all of the CPU internal load memory (the user program and any force values). The CPU then executes the program in external load memory (the program card). Downloading to a CPU that has a program card updates only the external load memory (the program card).

  Because the internal load memory of the CPU was erased when you inserted the program card, the program card must remain in the CPU. If you remove the program card, the CPU goes to STOP mode. (The error LED flashes to indicate that program card has been removed.)

The program on a memory card includes the code blocks, the data blocks, the technology objects, and the device configuration. The memory card does not contain any force values. The force values are not part of the program, but are stored in the load memory, whether the internal load memory of the CPU, or the external load memory (a program card). If a program card is inserted in the CPU, then STEP 7 Basic applies the force values only to the external load memory on the program card.

Best regards,

Hristo Mihalev

patel

Hi.

I am totally new to this cpu.Pease guide me.
I have s7-1200 1214 cpu.It is not going in run mode.Do i need MMC CARD TO START my cpu?Means ,in s7-1200, is it compulsary to have MMC Card inserted in cpu?