Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 159)

Publication 1760-UM002B-EN-P - March 2005
Wiring with Pico GFX-70 4-49
BC01EQ to BC32EQ: output of the comparison result. Only valid if the
BC..EN enable has been triggered.
Status 0 = Comparison ranges not equal
Status 1 = Comparison ranges equal.
Coils
BC01EN to BC32EN: Enable coil of the data block comparator function
block.
Memory Requirement of the Data Block Comparator Function Block
The data block comparator function block requires 48 bytes of memory plus 4
bytes per constant on the function block inputs.
Function of the Data Block Comparator Function Block
The data block comparator function block compares two consistent data
blocks.
The comparison is active if the BC..EN (enable) is triggered.
The error outputs E1, E2 and E3 are evaluated regardless of the status of the
enable.
Example:
Comparison of marker blocks, definition of marker ranges direct
Two marker blocks are to be compared. Block 1 starts at MB10, Block 2 at
MB40. Each block is 10 bytes long.
Parameters of BC01 function block:
Comparison range 1:
>I1 MB10
Comparison range 2:
>I2 MB40
Number of bytes:
>NO 10
IMPORTANT
No data blocks are compared if an error is present.