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Functions of the IM 151-7 CPU

8-11

ET 200S IM 151-7 CPU Interface Module

A5E00058783-04

Backing up the operating system on the MMC

To back up the operating system, proceed as follows:

Table 8-6 Backing up the operating system

Step Action required Action by the IM 151-7 CPU

1st Insert a new micro memory card

( 4 MB) in the CPU

The CPU requests a memory

reset

2. Hold the mode selector in the

MRES position.

–

3. Switch the power off then on, and

keep the mode selector in the

MRES position until... ... STOP, RUN and FRCE LEDs

start flashing

4. Move the mode selector to STOP –

5. Move the mode selector briefly to

MRES, then let it snap back to

STOP

The IM 151-7 CPU starts to back

up the operating system on the

MMC.

All the LEDs light up during

backup.

The STOP LED flashes after the

backup has been completed. In

this way, the IM 151-7 CPU

requests a memory reset.

6. Remove the micro memory card –

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Siemens ET 7Y Series Spezifikationen Seite 123