Siemens S7-1200 System Manual page 129

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6. In the "Load preview" dialog, click the "Load" button to copy the CPU device to the

7. When the dialog displays a message that the CPU device (program) has been loaded

Using a transfer card

Verify that the CPU is not actively running a process before inserting the memory card.

Inserting a memory card will cause the CPU to go to STOP mode, which could affect the

operation of an online process or machine. Unexpected operation of a process or machine

could result in death or injury to personnel and/or property damage.

Before inserting a transfer card, always ensure that the CPU is in STOP mode and your

process is in a safe state.

Do not insert V3.0 program transfer cards into S7-1200 V4.0 CPUs.

Version 3.0 program transfer cards are not compatible with version S7-1200 V4.0 CPUs.

Inserting a memory card that contains a V3.0 program causes a CPU error.

If you do insert an invalid version program transfer card, then remove the card, perform a

STOP to RUN transition, a memory reset (MRES), or cycle power. After you recover the

CPU from the error condition, you can download a valid V4.0 CPU program

To transfer the program to a CPU, follow these steps:

1. Insert the transfer card into the CPU (Page 125). If the CPU is in RUN, the CPU will go to

2. Power-cycle the CPU to evaluate the memory card. Alternative methods for rebooting the

3. After the rebooting and evaluating the memory card, the CPU copies the program to the

4. Reboot the CPU (either by restoring power or by the alternative methods for rebooting) to

The CPU then goes to the start-up mode (RUN or STOP) that you configured for the project.

You must remove the transfer card before setting the CPU to RUN mode.

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG

memory card.

without errors, click the "Finish" button.

STOP mode. The maintenance (MAINT) LED flashes to indicate that the memory card

needs to be evaluated.

CPU are to perform either a STOP-to-RUN transition or a memory reset (MRES) from

internal load memory of the CPU.

The RUN/STOP LED alternately flashes green and yellow to indicate that the program is

being copied. When the RUN/STOP LED turns on (solid yellow) and the MAINT LED

flashes, the copy process has finished. You can then remove the memory card.

evaluate the new program that was transferred to internal load memory.

PLC concepts

4.5 Using a memory card