80
Function Description
WAGO-I/O-SYSTEM 750
750-880, 750-880/025-000 ETHERNET Programmable Fieldbus Controller
Manual
Version 1.0.1
7.2.3
Example of an Output Data Process Image
The following example for the output process image comprises 2 digital and 4
analog outputs. It comprises 4 words for the analog outputs and 1 word for the
digital outputs; i.e., 5 words in total.
In addition, the output data can also be read back with an offset of 200
hex
(0x0200)
added to the MODBUS address.
Note
Data > 256 words can be read back by using the cumulative offset!
All output data greater than 256 words and, therefore located in the memory range
6000
hex
(0x6000) to 66F9
hex
(0x66F9) can be read back with an offset of 1000
hex
(0x1000) added to the MODBUS address.
Bi
t 1
Bi
t 2
Wor
d2
Wor
d1
Wor
d2
Wor
d1
Wor
d2
Wor
d1
Wor
d2
Wor
d1
Wor
d2
Wor
d1
Wor
d2
Wor
d1
0x000
3
/ 0x0
2
0
3
%QW
3
0x000
2
/ 0x0
2
0
2
%QW
2
0x000
1
/ 0x0
2
0
1
%QW
1
0x0000 / 0x0
2
00 %QW0
0x000
4
/ 0x0
2
0
4
%QW
4
0x0
2
0
3
%QW
3
0x0
2
0
2
%QW
2
0x0
2
0
1
%QW
1
0x0
2
00 %QW0
0x0
2
0
4
%QW
4
0x0000 / 0x0
2
00 %QX
4
.0
0x000
1
/ 0x0
2
0
1
%QX
4
.
1
0x0
2
00 %QX
4
.0
0x0
2
0
1
%QX
4
.
1
AO
DO
AO
Hi
ghbyte
Lowbyte
Hi
ghbyte
Lowbyte
MO
D
BU
S add
r
esses
MO
D
BU
S add
r
esses
MO
D
BU
S add
r
esses
MO
D
BU
S add
r
esses
P
ro
cess
o
utput
i
ma
g
e
(Wor
d)
P
ro
cess
in
put
i
ma
g
e
(Wor
d)
P
ro
cess
o
utput
i
ma
g
e
(Bi
t)
P
ro
cess
in
put
i
ma
g
e
(Bi
t)
DO: D
i
g
i
ta
l
Output
AO: Ana
l
og Output
O
utput m
o
du
l
es
75
0 -
5
0
1
55
0
55
0
Figure 39: Example of process image for output data