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74 •
Fieldbus coupler/controller
Review
3.2.6.2 Addressing
The data of I/O modules, PFC-variables and CPs are absolute adressed for
processing internally in the controller through an IEC 61131-3 program. This
application program for the PLC functionality (CPU) of the PFC is created
with WAGO-I/O-PRO 32 in accordance with IEC 61131-3.
The direct display of individual memory cells (absolute addresses) in accor-
dance with IEC 61131-3 is made using special character strings in accordance
with the following table:
Position
1
2
3
4
* The character 'X' for single bits can be deleted.
Tab. 3-2
Character
%
I
Q
M
X*
B
W
D
: Absolute addresses
Nomination
Apply an absolute address
Input
Output
Flag
Single bit
Byte (8 Bits)
Word (16 Bits)
Double word (32 Bits)
Address
Comment
Data width
®
L
W
ON
ORKS
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