firmware Update

S7-1200 CPU Firmware update process:

CAUTION

Do not use the Windows formatter utility to reformat the memory card. If a Siemens memory card is reformatted using the Microsoft Windows formatter utility, then the memory card will no longer be usable by a S7-1200 CPU.

To install the CPU firmware update, follow these steps:

1. Insert a blank SIMATIC MC 24MB memory card into an SD card reader/writer attached to your computer.
   If you are reusing a SIMATIC memory card that contains a user program or another firmware update, you must delete the "S7_JOB.S7S" file and any folder (such as "SIMATIC.S7S" or "FWUPDATE.S7S") before downloading the firmware update. Use Windows Explorer to display the contents of the memory card and delete the file and folders.

	CAUTION
	Do NOT delete the hidden files "__LOG__" and "crdinfo.bin" from the memory card. The "__LOG__" and "crdinfo.bin" files are required for the memory card. If you delete these files, you cannot use the memory card with the CPU.

1. Download the CPU firmware update file for your CPU model. Double-click the update file, set the file destination path to be the root directory of the SIMATIC memory card, and start the extraction process. After the extraction is complete, the root directory of the memory card will contain a "FWUPDATE.S7S" directory and the "S7_JOB.S7S" file.

WARNING

Verify that the CPU is not actively running a process before installing the CPU firmware update. Installing the firmware update 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 the memory card, always ensure that the CPU is offline and in a safe state.

1. Insert the memory card into the CPU. If the CPU is in RUN mode, the CPU then goes to STOP mode. The maintenance (MAINT) LED flashes to indicate that the memory card needs to be evaluated.
   Power-cycle the CPU to start the firmware update. Alternative methods for rebooting the CPU are to perform either a STOP-to-RUN transition or a memory reset (MRES) from STEP 7.
   
   
2. After the CPU reboots, the firmware update is copied to the load memory. The RUN/STOP LED alternately flashes green and yellow to indicate that the update 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.
   
   
3. After removing the memory card, reboot the CPU again (either by restoring power or by the alternative methods for rebooting) to load the new firmware.
   

The user program and hardware configuration are not affected by the firmware update. When the CPU is powered up, the CPU enters the configured start-up state.

Regards,

Marcjan

Insert a blank SIMATIC MC 24MB memory card