Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 157)

Publication 1760-UM002B-EN-P - March 2005
Wiring with Pico GFX-70 4-47
Data Block Comparator
Pico GFX-70 provides 32 function blocks BC01 to BC32 for comparing
values of two consistent marker ranges. The comparison is in byte format. The
following marker types can be compared:
• MB
• MW
• MD
The function block is enabled in the circuit diagram.
Figure 4.27 Pico GFX-70 circuit diagram with enabling of data block comparator
function block
Parameter display and parameter set for a data block comparator:
Only constants can be modified in the parameter display of a function block.
According to the operands at the inputs
>I1
and
>I2
the following operating
modes are possible:
Inputs
The function block inputs
>I1, >I2
and
>NO
can have the following operands:
I 05--------------------------[ BC27EN
BC27E1- |
BC27E2-|
BC27E3- | ----------------------[ M 48
BC27EQ-BC27EN-----------------[ M 49
BC27 +
>I1
>I2
>NO
BC27 Data block comparator function block number 27
+ Appears in the parameter display
>I1 Start of comparison range 1
>I2 Start of comparison range 2
>NO Number of elements to be compared in bytes per range. Value range 1 to + 383