help me change to LAD these codes

smiles · Jul 14, 2007

I just start with S7300, here is the code I saw in help document about timer

01. A I 2.0
02. FR T 1
03. A I 2.1
04. L S5T#10S
05. SE T 1
06. A I 2.2
07. R T 1
08. A T 1
09. = Q 4.0
10. L T 1
11. T MW 10
12. LC T 1
13. T MW 12

I look up, compare

but not find out the ladder for codes from 10 to 13, could you save a little time help me !!!
Thanks !!!

dchartier · Jul 15, 2007

Hello Smiles;

03. A I 2.1
04. L S5T#10S
05. SE T 1
06. A I 2.2
07. R T 1
08. A T 1
09. = Q 4.0
10. L T 1
11. T MW 10
12. LC T 1
13. T MW 12

Tranlstes to:

Hope this helps,
Daniel Chartier

smiles · Jul 15, 2007

That helps much !!!
In the library, I also see the term timer coil like SP, SE .... I remember that in S7200 not have this term, do you know what are they used for, stand for output Q of timer ???
Thanks

dchartier · Jul 15, 2007

Hello smiles;

The following 2 rungs are equivalent as far as logic is concerned:

Just check the online help for more details.
But you have less functionalities if you use the coil form of the timer, no reset bit, no binary or BCD countdown values available.

Hope this helps,
Daniel Chartier

smiles · Jul 15, 2007

Thanks friend

smiles · Jul 16, 2007

how can I make it right

My coding is about when your input I0.0 =1 then you transfer the content 2#1111111 to MB0
begining
A I0.0
L 2#11111111
T MB0
not work
Second way
A I0.0 (or L IW0 then compare with 1)
L 1
==I
JC test
test: L 2#11111111
T MB0
still not work

(MB0 always contents 11111111 before I turn on I0.0)
what wrong with my code ???
thanks

Taffy · Jul 16, 2007

Try this:-AN I0.0
JC Test
L 2#11111111
T MB 0
Test:

The load command in siemens is unconditional i.e. it does not rely on the RLO to carry out this command

smiles · Jul 16, 2007

Thanks but your code still not work

You see in the picture, I still not turn on I0.0 but 8 bits of MB is turned on ???
http://img2.freeimagehosting.net/uploads/9d9326df95.jpg

dchartier · Jul 16, 2007

Hello smiles;

What in your program resets the bits in MB0?
Once they have been set, they will remain set...
A suggestion: start by moving 0 to MB0, then test your original logic.

Hope this helps,
Daniel Chartier

smiles · Jul 17, 2007

Hi Daniel !
You say Move instruction, I did it in LAD and run well, change to STL, this is the last

A I 0.0
JNB xng
L W#16#FF
T MB 0
xng: NOP 0
Thank you !!!

help me change to LAD these codes

smiles

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dchartier

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smiles

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dchartier

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smiles

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smiles

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Taffy

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smiles

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dchartier

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smiles

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