Studio 5000 Indirect Addressing
- Thread starter RobWad
- Start date
rdrast
Lifetime Supporting Member
They are masks.
15 = 0000 0000 0000 1111
-16 = 1111 1111 1111 0000
In one case, looking at only the low 4 bits of the word, in the other case, looking at only the high 12 bits of the word.
15 = 0000 0000 0000 1111
-16 = 1111 1111 1111 0000
In one case, looking at only the low 4 bits of the word, in the other case, looking at only the high 12 bits of the word.
drbitboy
Lifetime Supporting Member
Sidebar: in some environments (e.g. MicroLogix 1xxx/RSLogix 500), that is equivalent to
Code:
B18[0].[N57_34]
OR
B18[0].[N57_34 AND 2147483647]- I doubt B18 has 16Melements, or even 8Melements.
- Dividing a negative number, which is what N57_34 will be if its MSBit is 1, by 16 will cause a fault, I think.
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