[?]: Step 7: set initial values on OB100

[krneki]

How could I set initial values in Step7 SIMATIC Manager which would run before OB1?
I heard that could be done with OB100, so I inserted there:

Code: Select all

CLR 
= M 1.0
= M 1.2
= M 1.6
= M 2.1
= M 2.2

But that unfortunately doesn't work.
When I switch from STOP to RUN-P mode, nothing gets resetted.

Thanks for help in advance.

[Guille]

Try using in OB100:

SET
R M 1.0
R M 1.2
...

it should work

there are another OB available for a different method of startup, such as OB101 and OB102, you can try using that OBs too

greetings

[krneki]

Why did you put SET to code as well?

Here is what I put into OB100 just in case:

Code: Select all

      CLR                               //=0
      =     M      1.0
      =     M      1.2
      =     M      1.6
      =     M      2.1
      =     M      2.2
      =     Q      0.1
      =     Q      0.2
      =     Q      0.3
      =     Q      0.4
      =     Q      0.5

But it still won't put them to 0 if I switch CPU from STOP to RUN-P . Perhaps I should put something to OB1 as well?
Is there any way to diagnose why this doesn't work?

You can see my program here: http://www.qfpost.com/file/d?g=EaOJFEy48

[CoMod]

STOP
RUN
OB100 // Reset/Set to 0 only 1 time (< 1 ms)


MainProgram: OB1 // Set/Reset by Logic

,,,
GoTo MainProgram

[Guille]

krneki im sorry i dont know what hapened with the code y didnt see the preview before posting.
I corrected the post,
you have to put in OB100

SET

R M 1.0
R M 1.2
R M 1.6
R M 2.1
R M 2.2
R Q 0.1
R Q 0.2
R Q 0.3
R Q 0.4
R Q 0.5

the set put the RLO to "1" and then de R clear the bit (R M1.0 ....).
If fou need to set one bit at startup you can use S (for instance S M1.0) instead of R

I used this code in some programs and works OK.

Sorry for the mistake

good luck

[krneki]

Hello,

your solution works, thank you very much