Memory Areas - WAGO 750-341 Manual

3.1.5.1

Memory areas

Fig. 3.1-6: Memory areas and data exchange for a fieldbus coupler
The coupler's process image contains the physical data of the I/O modules in
memory words 0 to 255 and 512 to 1275.
(1) The input module data can be read from the fieldbus side.
(2) In the same manner, writing on the output modules is possible from the
In addition, all output data of the ETHERNET TCP/IP coupler are mirror
imaged on a storage area with the address offset 0x0200 or 0x1000. This
allows to read output values back by adding 0x0200 or 0x1000 to the
MODBUS address.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Programmable Fieldbus Controller
memory area
fieldbus
master
for output data
fieldbus side.
for input data
word 0 1
input
modules
word 255
word 256
reserved
word 511
word 512
1
input
modules
word 1275
word 1276
reserved
word 1531
memory area
2
word 0
output
modules
word 255
word 256
reserved
word 511
word 512
2
output
modules
word 1275
word 1276
reserved
word 1531
Fieldbus Coupler 750-341
Data Exchange
I/O modules
I
O
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