Updating The Firmware From Mmc - Siemens Simatic S7-300 CPU 31xC Series Installation And Operating Instructions Manual

9.3

Updating the firmware from MMC

In which situations should I update the firmware?
After (compatible) function expansions, or after an enhancement of operating system
performance, the firmware should be upgraded (updated) to the latest version.
Where do I get the latest version of the firmware?
You can order the latest firmware (as *.UPD files) from your Siemens partner, or download it
from the Siemens Internet homepage:
www.siemens.com/automation/service&support
Updating the CPU firmware
Table 9-2
Step
1.
2.
3.
4.
5.
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
Updating the firmware from MMC
Action required:
Recommendation
Before you update the CPU firmware, you should create a backup copy of the "old"
firmware on an empty MMC. If problems occur during the update, you can simply reload
your old firmware from the MMC.
Transfer the update files to a blank
MMC using STEP 7 and your
programming device.
Switch off CPU power and insert an
MMC containing the firmware update.
Switch on power.
Switch off CPU power and remove
the MMC containing the FW update.
9.3 Updating the firmware from MMC
This happens in the CPU:
-
-
The CPU detects the MMC with the firmware
•
update automatically and runs the update.
All LEDs are lit during firmware update.
•
The STOP LED flashes when the FW update
•
is completed, and indicates that the CPU
requires a memory reset.
-
Maintenance
9-3