BiteBytesButes
Member
Hi All,
This topic it is really interesting indeed.
Hi have a doubt that is inside this kind of questions:
RSLogix 5k V28, 1756-L73CPU value update.
I came across a ladder program with a line with something that for me is a doubtful functioning.
What do you think about this at below, this works fine?
****
The ladder line have a REAL value that is MOV to an REAL Word1, (with a MOV instruction).
In the same ladder line (so..in series), the same REAL Word1 it is CLR. (with CLR instruction).
In my opinion the value that it is moved first ''REAL value that is MOV to an REAL Word1'' never it is updated and processed in the REAL Word1, because the last instruction (CLR) will clear the content.
I mean, this lines does not nothing and the result will be always ZERO....right?
Of course that during the PLC cycle, I cannot see the value to be updated in the Real Word1.
***
What do you think?
Any tips?
Thank you gents!
3B
This topic it is really interesting indeed.
Hi have a doubt that is inside this kind of questions:
RSLogix 5k V28, 1756-L73CPU value update.
I came across a ladder program with a line with something that for me is a doubtful functioning.
What do you think about this at below, this works fine?
****
The ladder line have a REAL value that is MOV to an REAL Word1, (with a MOV instruction).
In the same ladder line (so..in series), the same REAL Word1 it is CLR. (with CLR instruction).
In my opinion the value that it is moved first ''REAL value that is MOV to an REAL Word1'' never it is updated and processed in the REAL Word1, because the last instruction (CLR) will clear the content.
I mean, this lines does not nothing and the result will be always ZERO....right?
Of course that during the PLC cycle, I cannot see the value to be updated in the Real Word1.
***
What do you think?
Any tips?
Thank you gents!
3B