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Standard function blocks
192
02/16 MN05013001Z EN
Example 2:Comparison of marker blocks, definition
of a marker range with offset
Two marker blocks are to be compared. Block 1 starts at
MB15, Block 2 starts at MB65. Each block is 4 bytes long.
• Parameters of function block BC01:
– Comparison range 1: >I1 MB15
– Comparison range 2: >I2 64
– Number of bytes:
>NO 4
– Marker MB01:
1
The comparison result of the function block BC01 is: BC01EQ
= 0, the data block ranges do not have the same content.
MB18 and MB68 are not identical.
h
Comparison range 2: Constant 64:
MB01 plus offset: 1 + 64 = 65
r
MB65.
Compar-
ison range
1
Value of
marker
range 1
(decimal)
Compar-
ison range
2
Value of
marker
range 2
(decimal)
MB15
45
MB65
45
MB16
62
MB66
62
MB17
102
MB67
102
MB18
65
MB68
57
Содержание easySafety
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