need help

wilc2g10 · Jul 19, 2010

I'm looking at an example of a ladder logic of an elevator in logix pro and what does it mean when there is a B3:0/X for ex

B3:0/10, or B3:0/11) please help me understand.

rdrast · Jul 19, 2010

Those are just address locations for binary (digital) bits.
B - File Type (B = Binary)
3 - File number (B3 is a default, others can be created)
0 - 16 bit word index into the file (Word 0)
/X- Bit number of the word.

B3:0/10 = the tenth bit in word 0 of binary file 3.

wilc2g10 · Jul 19, 2010

Thanx and I did look 1st, but I new to this I ask the question to get a better understanding of what I was looking at that's all.

Mickey · Jul 19, 2010

For examples see link below then scroll down

http://www.plcs.net/downloads/index.php?&direction=0&order=&directory=Allen_Bradley

OZEE · Jul 19, 2010

rdrast said:
Those are just address locations for binary (digital) bits.
B - File Type (B = Binary)
3 - File number (B3 is a default, others can be created)
0 - 16 bit word index into the file (Word 0)
/X- Bit number of the word.

B3:0/10 = the tenth bit in word 0 of binary file 3.

Well, technically, it would be the 11th bit. B3:0/0 would be the first; B3:0/1 the second; etc.

wilc2g10 · Jul 19, 2010

Ok do I look at the data table to find this? I'm trying to get a better understanding.

Mickey · Jul 19, 2010

wilc2g10 said:
Ok do I look at the data table to find this? I'm trying to get a better understanding.

Yes, that's a good place to look at. It will show you status,usage,properties..

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