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Deployment CPU 315-4PN23
Overall reset
5.13
Overall reset
Overview
Overall reset by means of
the operating mode switch
Overall reset by means of
the Siemens SIMATIC
Manager
Automatic reload
Reset to factory setting
64
During the overall reset the entire user memory is erased. Data located in the memory
card is not affected. If you have assigned IP address data to your PROFINET IO con-
troller, these remain until there is a new PowerON.
You have 2 options to initiate an overall reset:
n
initiate the overall reset by means of the operating mode switch
n
initiate the overall reset by means of the Siemens SIMATIC Manager
You should always issue 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.
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.
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 blinks. When the ST LED is on permanently the overall reset procedure
has been completed.
If there is a project S7PROG.WLD on the memory card, the CPU attempts to reload this
project from memory card. ® The MC LED is on. When the reload has been completed
the LED expires. The operating mode of the CPU will be STOP respectively RUN,
depending on the position of the operating mode switch.
The Reset to factory setting deletes completely the internal RAM of the CPU and resets
this to delivery state. Please regard that the MPI address is also set back to default 2!
Ä Chap. 5.15 'Reset to factory settings' page 67
System 300S
HB140 | CPU | 315-4PN23 | en | 18-02
+
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