4.12 Overall reset
During the overall reset the entire user memory is erased. Data located in the memory
card is not affected. You have 2 options to initiate an overall reset:
n
Overall reset by means of the operating mode switch
n
Overall reset by means of a configuration tool like e.g. the Siemens SIMATIC Man-
ager
You should always establish an overall reset to your CPU before loading
an application program into your CPU to ensure that all blocks have been
cleared from the CPU.
4.12.1
Overall reset by means of the operating mode switch
Proceeding
1.
Your CPU must be in STOP mode. For this switch the operating mode switch of the
CPU to STOP.
ð
The ST LED is on.
2.
Switch the operating mode switch to MR position for about 3 seconds.
ð
The ST LED changes from blinking to permanently on.
3.
Place the operating mode switch in the position STOP and switch it to MR and
quickly back to STOP within a period of less than 3 seconds.
ð
The overall reset is carried out. Here the ST LED flashes.
4.
The overall reset has been completed when the ST LED is permanently on.
4.12.2
Overall reset by means of the Siemens SIMATIC Manager
For the following proceeding you must be online connected to your CPU.
1.
For an overall reset the CPU must be switched to STOP state. You may place the
CPU in STOP by the menu command
‘PLC
è
Operating mode’
.
2.
You may request the overall reset by means of the menu command
‘PLC
è
Clean/Reset’
.
ð
A dialog window opens. Here you can bring your CPU in STOP state, if not
already done, and start the overall reset. During the overall reset procedure the
ST LED flashes. When the ST LED is on permanently the overall reset proce-
dure has been completed.
4.12.3
Actions after a memory reset
If there is a VSC from VIPA plugged, after an overall reset the according functionality is
Overview
Proceeding
Activating functionality by
means of a VSC
VIPA System SLIO
Deployment CPU 013-CCF0R00
Overall reset > Actions after a memory reset
HB300 | CPU | 013-CCF0R00 | en | 17-20
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