Updating The Firmware Without A Memory Card - Siemens SIMATIC S7-400H System Manual

6.4

Updating the firmware without a memory card

Basic procedure
To update the firmware of a CPU, you will receive several files (*.UPD) containing the
current firmware. Download these files to the CPU. You do not need a memory card to
perform an online update. However, it is still possible to update the firmware using a memory
card.
Requirement
The CPU whose firmware you want to update must be accessible online, e.g. via
PROFIBUS, MPI, or Industrial Ethernet. The files containing the current firmware versions
must be available in the programming device/PC file system. A folder may contain only the
files of one firmware version. If security level 2 or 3 is set for the CPU, you require the
password to update the firmware.
Note
You can update the firmware of the fault-tolerant CPUs via Industrial Ethernet. Updating the
firmware over a MPI can take a long time if the transfer rate is low (e.g. approximately 10
minutes at 187.5 Kbit/s).
Procedure in HW Config
Proceed as follows to update the firmware of a CPU:
1. Open the station containing the CPU you want to update in HW Config.
2. Select the CPU.
3. Select the "PLC -> Update Firmware" menu command.
4. In the "Update Firmware" dialog, select the path to the firmware update files (*.UPD)
5. Click on "Run".
STEP 7 verifies that the selected file can be interpreted by the CPU and then downloads the
file to the CPU. If this requires changing the operating state of the CPU, you will be prompted
to do this in the relevant dialog boxes.
S7-400H
System Manual, 03/2012, A5E00267695-11
using the "Browse" button.
After you have selected a file, the information in the bottom boxes of the "Update
Firmware" dialog box indicate the modules for which the file is suitable and from which
firmware version.
Special functions of a CPU 41x-H
6.4 Updating the firmware without a memory card
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