Wiring with the display system
172
1SVC 440 795 M1100
The error message “Number of elements exceeds the
destination range” is output.
BT01E1 is 1.
Example:
Transfer of marker bytes, invalid offset error.
The value of marker byte MB40 is to be transferred to MW54
and subsequent marker words. The block length is specified
by the value of the counter C 01QV.
Parameters of BT01 function block:
Comparison range 1:
>I1 MB40
Comparison range 2:
>I2 MW54
Number of bytes:
>NO C 01QV
The message “The specified offset of the destination range
is outside of the permissible range” is output.
BT01E3 is 1.
CPY mode, copy marker ranges
There is one source range and one destination range. The
source range is specified at
>I1
. The destination range is
specified at
>I2.
The length of the source and destination
range is specified by the number of bytes at the
>NO
input.
The content of the source range is copied to the marker bytes
in the destination range.
The function block executes the copy operation if there is a
rising edge from 0 to 1 at the BT..T_ (Trigger) coil.
The error outputs E1, E2 and E3 are evaluated regardless of
the status of the trigger.
Example:
Copy of marker blocks, definition of marker ranges direct
The content of marker bytes 10 to 19 is to be transferred to
marker bytes 20 to 29.
h
The value of C 01QV is 788. This value is too big.
The value at
>NO
can be between 1 and +383.
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