Changing bit in STEP 7 with some frequency

Adenitz

Member
Join Date
Feb 2010
Location
tir
Posts
41
Hello all,

I have one step 7 simatic program in which I noticed that one bit is constantly changing every two sec, but I cannot find any timers in the program.
How is that made? Can you give me some guidelines?
Thanks
 
Thank you L D[AR2,P#0.0], I have set this byte MB 0.
Now I can see that all bits M0.0 to M0.7 blinking at different frquency.
I'm pretty much sure about M0.7. It is blinking in such way that 1 is present for 1 sec and pause is also 1 sec,so overall period is 2 sec.
How to determine the rate blinking of other (faster) bits?

Thanks
 
Look at help, it gives all of bits blink rates, they are always same amount off and on. Mx.0 = 100ms, Mx.1 = 200ms. Rest look at help.
 
can you please email me the program or guide me step by step,
i need to toggle a bit in 100Hz frequency
how could i ?
thanks
 

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