Eaton easy800

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:
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:
The error message “The specified offset of the comparison ranges is outside
of the permissible range” is output.
BC01E3 is 1.
• Comparison range 1: I1 MW60
• Comparison range 2: I2 MW64
• Number of bytes: NO 12
￫
The comparison is in byte format. MW60 to MW64 is 8 bytes.
The number of bytes is 12 bytes.
• Comparison range 1: I1 MW40
• Comparison range 2: I2 MW54
• Number of bytes: NO C 01QV
￫
The value of C 01QV is 1024. This value is too big.
The value at >NO can be between 1 and +383.