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Standard function blocks
190
02/16 MN05013001Z EN
Coil
The coil of the function block is used in the standard circuit
diagram.
Contacts
The contacts of the function block are evaluated in the
standard circuit diagram. A closed contact indicates:
Memory requirement
The data comparator function block requires 48 bytes of
memory plus 4 bytes per constant at the function block
inputs.
Operation of the function block
The data block comparator function block compares two
contiguous data blocks.
The comparator is active if coil BC..EN (enable) is triggered.
The error outputs E1, E2 and E3 are evaluated regardless of
the status of the enable.
Parameters
Function
BC..EN
Selective activation of the function block
Parameters
Function
BC..EQ
Compared ranges are identical
BC..E1
The number of compared elements for a marker
range are exceeded.
BC..E2
Compared ranges overlap
BC..E3
Offset of compared blocks outside of the
permitted range.
h
No data blocks are compared if an error is present.
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