timer

[balouji]

hi guys
how are you?
I set the input of timer in simatic manager to MW0
but when the amount of MW0 became more than 1000ms it cause SF in my CPU314
what should I do please guide me
thanks before

 

[L D[AR2P#0.0]]

Are you using the s5 timer format correctly ?

 

[balouji]

dear LD
you know I want to insert for exampel 2h20min to timer not directly, by MW0 or other ...
how can I do that?
thanks for your reply

 

[moggie]

dear LD
you know I want to insert for exampel 2h20min to timer not directly, by MW0 or other ...
how can I do that?
thanks for your reply

S5T#2h20m =
2#0011_1000_0100_0000

S5T#1h35m10s =
2#0011_0101_0111_0001


please compare the above with the image L D[AR2,P#0.0] posted.

 

[L D[AR2P#0.0]]

2h20m = 140m = 8400s therefore 10s time base required (3) and timer value = 840 in bcd, thus value in MW0= 3840 Hex

 

[L D[AR2P#0.0]]

You can use FC40 from the library to convert from #time to #s5time, e.g.

 

[balouji]

appreciate LD
for your complete reply
it help me a lot

 

[interlock]

Dear L D[AR2,P#0.0],
This's my 1st post on this forum.
Thanks for the reply as it helped me as well(alongwith the originator of this thread) to get the "insight" of the S5TIME format ...... actually into binary bits !!
Siemens says , the maximum time this syntax can hold is 2H_46MIN_30SEC.
Is this beacause the max BCD digits run upto 999 and considering the maximum time base of 10s(bits 12 and 13 = 1 and 1), it will come to 9990 sec which is eventually 2h_46min_30sec?
OR Am I going wrong?
Regards

 

[L D[AR2P#0.0]]

You are correct.

 

[interlock]

Thanks L D[AR2,P#0.0],

Just 1 more thing ....... in case if you have to use a timer for longer than 2h_46m_30s ?

Regards

 

[TurpoUrpo]

Learn to use IEC timers.

 

[interlock]

Thanks TurpoUrpo.