Maintenance
Updating the Operating System
How to update the operating system (OS):
Table 10-2
Step
Action required
1.
Using STEP 7 and your
programming device, transfer the
update files to an empty
MC/MMC.
2.
Remove the back-
up/rechargeable battery from
relevant CPUs.
3.
Switch off the CPU power supply
and insert the MC/MMC that
contains the OS update.
4.
POWER ON.
5.
Switch off the CPU power supply
and remove the MC/MMC that
contains the OS update.
6.
Reinsert the back-
up/rechargeable battery into the
relevant CPUs.
10-4
Updating the operating system with MC/MMC
S7-300 Programmable Controller Hardware and Installation
CPU Response
-
-
-
•
The CPU automatically recognizes the
MC/MMC and the OS update and then
starts the update.
•
All LEDs are lit during OS update.
•
The STOP LED flashes when the
operating system has been updated to
indicate that the CPU requires a memory
reset.
-
-
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