Eaton easy800 Manual page 152

5 Function blocks
5.3 BC, data block comparator
148
Control Relay easy800 11/11 MN04902001Z-EN www.eaton.com
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:
• Comparison range 2:
• Number of bytes:
￫
The comparison is in byte format. MW60 to MW64 is 8 bytes.
The number of bytes is 12 bytes.
The error message "Comparison ranges overlap" is output.
BC01E2 is 1.
Example 6:
Comparison of marker blocks, invalid offset error
Two marker blocks are to be compared. Block 1 starts at MW40, block 2 at
MW54. The block length is determined by the value of counter C 01QV.
• Parameters of function block BC01:
• Comparison range 1:
• Comparison range 2:
• Number of bytes:
￫
The value of C 01QV is 1024. This value is too big.
The value at >NO can be between 1 and +383.
The error message "The specified offset of the comparison ranges is outside
of the permissible range" is output.
BC01E3 is 1.
I1 MW60
I2 MW64
NO 12
I1 MW40
I2 MW54
NO C 01QV