Technical data

70 • BACnet/IP Controller 750-830
Data Exchange
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
3.1.6.2.4 Absolute Addressing
Direct presentation of individual memory cells (absolute addresses) based on
IEC 1131-3 is performed using character strings:
Tab. 3-13: Absolute addresses
Position Prefix Designation Commentary
1
% Introduces 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
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
The character strings for absolute addresses must be entered connected, i.e.
without spaces or special characters!
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)
Flag
Bit %MX11.0 ... 15 %MX12.0 ... 15
Byte %MB22 %MB23 %MB24 %MB25
Word
%MW11 %MW12
Double word %MD5 (top section) %MD6 (bottom section)