5.13 Overall reset
During the overall reset the entire user memory is erased. Data
located in the memory card is not af
fected. You have 2 options to ini-
tiate 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 Man-
ager
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.
Precondition
The operating mode of the CPU is to be switched to STOP. For
this switch the operating mode switch of the CPU to "ST
OP".
ð
The ST-LED is on.
Overall reset
1. Switch the operating mode switch to MRES position for about 3
seconds.
ð
The ST
-LED is blinking.
2. Place the operating mode switch in the position ST
OP and
switch it to MRES and quickly back to STOP within a period of
less than 3 seconds.
ð
The ST-LED blinks (overall reset procedure).
3. The overall reset has been completed when the ST
OP-LED is
on permanently.
ð
The ST-LED is on. The following figure illustrates the above
procedure:
Overview
Overall reset by means
of the operating mode
switch
VIPA System 300SDeployment CPU 314-6CF03
Overall reset
HB140 | CPU | 314-6CF03 | GB | 16-43 84
To Next Page
Loading...