User Manual

Wiring with easy800
132
08/04 AWB2528-1423GB
Data block comparator
This function block is available from device version 04.
easy800 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 69: easy800 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:
I 05--------------------------Ä BC27EN
BC27E1o
BC27E2s
BC27E3j-----------------------Ä M 48
BC27EQ-BC27EN-----------------Ä 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