S5-115U Manual
Introduction to STEP 5
7.5
Processing Blocks
Section 8 describes how to use blocks. In addition, Chapter 7 describes all operations necessary to
work with blocks.
Of course, blocks that have already been programmed can be changed. Possibilities for changing
blocks are described here only briefly. The operating instructions for the particular programmer
used explain the necessary steps in detail.
7.5.1
Modifying the Program
You can modify the program, regardless of block type, with the following programmer functions:
•
INPUT
•
OUTPUT
•
STATUS (see Chapter 4)
With the above functions, you can make the following changes:
•
insert, delete, or overwrite statements
•
insert or delete segments.
7.5.2
Modifying Blocks
Program modifications relate to the contents of a block. You can also delete or overwrite entire
blocks. However, this does not delete the blocks in the program memory. Instead, it simply
invalidates the blocks. The memory locations of these blocks cannot be written to again. As a
result, new blocks might not be accepted. The programmer reports the error message "No
memory space"
.
Eliminate this by compressing the PLC memory.
7.5.3
Compressing the Program Memory
Figure 7-10 explains compressing. Internally one block is shifted per cycle.
Figure 7-10. Compression Process
Available
memory
locations
Input
possible
Input not
possible
Program memory
RAM
Program memory
RAM
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
Compression
Valid
Blocks
Invalid
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
PB
PB
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a
EWA 4NEB 811 6130-02b
7-25
Summary of Contents for SIMATIC S5-115U
Page 6: ...EWA 4NEB 811 6130 02b ...
Page 16: ...EWA 4NEB 811 6130 02b ...
Page 18: ...EWA 4NEB 811 6130 02b ...
Page 26: ......
Page 62: ...EWA 4NEB 811 6130 02b ...
Page 64: ...EWA 4NEB 811 6130 02b ...
Page 67: ......
Page 74: ......
Page 79: ......
Page 80: ......
Page 81: ......
Page 82: ......
Page 83: ......
Page 84: ......
Page 97: ......
Page 98: ......
Page 99: ......
Page 114: ...EWA 4NEB 811 6130 02b ...
Page 280: ...EWA 4NEB 811 6130 02b ...
Page 372: ...EWA 4NEB 811 6130 02b ...
Page 432: ...EWA 4NEB 811 6130 02b ...
Page 442: ......
Page 528: ...EWA 4NEB 811 6130 02b ...
Page 590: ......
Page 591: ......
Page 592: ......
Page 593: ......
Page 594: ......
Page 600: ...EWA 4NEB 811 6130 02b ...
Page 602: ...EWA 4NEB 811 6130 02b ...
Page 604: ...EWA 4NEB 811 6130 02b ...
Page 624: ...EWA 4NEB 811 6130 02b ...
Page 632: ...EWA 4NEB 811 6130 02b ...
Page 644: ...EWA 4NEB 811 6130 02b ...
Page 646: ...EWA 4NEB 811 6130 02b ...
Page 652: ...EWA 4NEB 811 6130 02b ...
Page 654: ...EWA 4NEB 811 6130 02b ...
Page 660: ...EWA 4NEB 811 6130 02b ...
Page 662: ...EWA 4NEB 811 6130 02b ...
Page 666: ...EWA 4NEB 811 6130 02b ...
Page 668: ...EWA 4NEB 811 6130 02b ...
Page 674: ...EWA 4NEB 811 6130 02b ...