92
Function Description
WAGO-I/O-SYSTEM 750
750-880, 750-880/025-000 ETHERNET Programmable Fieldbus Controller
Manual
Version 1.0.1
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7.3.2.3
Absolute Addressing
Direct presentation of individual memory cells (absolute addresses) based on IEC-
61131-3 is performed using character strings:
Table 34: Absolute Addressing
Position Prefix
Designation
Comment
1
%
Introduces an absolute address
2 I
Q
M
Input
Output
Flag
3
X*
B
W
D
Single bit
Byte (8 bits)
Word (16 bits)
Doubleword (32 bits)
Data width
4
Address
such as word-by-word: %QW27 (28th word), bit-by-bit: %IX1.9 (10th bit in the
2nd word)
* The designator "X" for bits can be omitted
Note
Enter character strings without spaces or special characters!
The character strings for absolute addresses must be entered connected, i.e.
without spaces or special characters!
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Addressing example:
Table 35: Addressing example
Inputs
Bit
%IX14.0 ... 15
%IX15.0 ... 15
Byte
%IB28 %IB29 %IB30 %IB31
Word
%IW14 %IW15
Double word
%ID7
Outputs
Bit
%QX5.0 ... 15
%QX6.0 ... 15
Byte
%QB10 %QB11 %QB12 %QB13
Word
%QW5 %QW6
Double word
%QD2 (top section)
%QD3 (bottom section)