Updating The Operating System With Mc/Mmc - Siemens SIMATIC S7-300 Hardware And Installation Manual

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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.
-
-
A5E00105492-02

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