74 •
Fieldbus coupler/controller
Review
L
ON
W
ORKS
®
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
Character
Nomination
Comment
1
%
Apply an absolute address
2
I Input
Q Output
M Flag
3
X*
Single bit
Data width
B
Byte (8 Bits)
W
Word (16 Bits)
D
Double word (32 Bits)
4
Address
* The character 'X' for single bits can be deleted.
Tab. 3-2
: Absolute addresses
