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Standard function blocks
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02/16 MN05013001Z EN
Example 4:Comparison of marker blocks, range
violation error.
Two marker blocks are to be compared. Block 1 starts at
MD60, Block 2 starts at MD90. Each block is 30 bytes long.
• Parameters of function block BC01:
– Comparison range 1: >I1 MD60
– Comparison range 2: >I2 MD90
– Number of bytes:
>NO 30
The error message “Number of comparison elements
exceeds one of the comparison ranges” is output.
BC01E1 is 1.
Example 5: Comparison of marker blocks, range
overlap error.
Two marker blocks are to be compared. Block 1 starts at
MW60, Block 2 starts at MW64. Each block is 12 bytes.
• Parameters of function block BC01:
– Comparison range 1: >I1 MW60
– Comparison range 2: >I2 MW64
– Number of bytes:
>NO 12
The error message “Comparison ranges overlap” is output.
BC01E2 is 1.
h
The comparison is in byte format. MD90 to MD96 is 28
bytes. The number of bytes is 30 bytes.
h
The comparison is in byte format. MW60 to MW64 is 8
bytes. The number of bytes is 12 bytes.
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