S5-95F STEP 5 Operations
Generating a Data Block
STL ExplanationExample
Generate a data block with 128 data
words without the aid of a pro-
grammer.
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L KF + 128
GDB5
The constant fixed-point number
+127 is loaded into ACCU 1. At
the same time, the old contents
of ACCU 1 are shifted to ACCU 2.
Data block 5 is generated with a
length of 128 data words (0000)
in the RAM of the PLC and
entered in the block address list.
The next time the “G DB5”
operation is processed, it has no
effect if the contents of
ACCU 1 are not 0.
Deleting a Data Block
STL ExplanationExample
Delete a data block that is no longer
needed.
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L KF + 0
GDB5
The constant fixed-point number
+0 is loaded into ACCU 1. At the
same time, the old contents of
ACCU 1 are shifted to ACCU 2.
Data block 5, which must be in
the RAM of the PLC, is declared
invalid and removed from the
block address list.
EWA 4NEB 812 6210-02
8-35
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