Commissioning and Diagnostics
4-5
ET 200S Interface Module IM 151/CPU
A5E00058783-01
t
On
Off
3 s
Max. 3 s
Min. 3 s
1.
2.
3.
STOP
LED
STOP
MRES
RUN-P
STOP
MRES
RUN-P
STOP
MRES
RUN-P
STOP
MRES
RUN-P
STOP
MRES
RUN-P
Figure 4-1
How to Use the Mode Selector to Reset the Memory
Is the STOP LED Not Flashing at Memory Resetting?
Does the STOP LED not flash during memory reset or do other indicators come
on? You must repeat steps 2 and 3. If the IM 151/CPU still doesn’t execute a
memory reset, you have to read out the diagnostic buffer of the CPU component
with the programming device (see the
STEP 7 user manual).
What Happens in the CPU Component of the IM 151/CPU?
Table 4-3
Internal CPU Events at Memory Resetting
Event
Response of the CPU in the IM 151/CPU
Sequence of
operations in the
CPU component of
the IM 151/CPU
1. The CPU deletes the entire user program in working memory and
the load memory.
2. The CPU deletes the backup memory (retentive data).
3. The CPU tests its own hardware.
4. If you have inserted a memory module (micro memory card =
MMC), the CPU copies the relevant contents of the module to
the working memory.
Memory contents
after reset
The user program from the memory module is transferred to the
working memory again.
What’s left?
The contents of the diagnostic buffer and the runtime meter.
Содержание SIMATIC IM 151/CPU
Страница 6: ...Important Information vi ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 14: ...Contents xiv ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 42: ...ET 200S in the PROFIBUS Network 3 12 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 68: ...Commissioning and Diagnostics 4 26 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 98: ...Technical Specifications 6 8 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 108: ...Cycle and Response Times 7 10 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 190: ...Execution Times of the SFCs and SFBs C 4 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Страница 196: ...Migration of the IM 151 CPU D 6 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...