Example Of A Process Input Image - WAGO -I/O-SYSTEM 750 User's Installation And Configuration

3.2.4.1

Example of a process input image

The following figure is an example of a process input image.
The configuration comprises of 16 digital and 8 analog inputs.
The process image thus has a data length of 8 words for the analog and 1 word
for the digital inputs, i.e. 9 words in total.
MODBUS PFC
0x0002 %IW2
0x0003 %IW3
0x0004 %IW4
0x0005 %IW5
0x0006 %IW6
0x0007 %IW7
0x0008 %IW8
Fig. 3-24: Example of a process input image
Modular I/O System
ETHERNET TCP/IP
Ethernet
ON
LINK
TxD/RxD
ERROR
I/O
Input modules
Process input image
(Word)
addresses
Word1
0x0000 %IW0
Word2 Word2
0x0001 %IW1
Word1
Word2
Word1
Word2
Word1
Word2
Highbyte Lowbyte
Process input image
(Bit)
addresses
MODBUS PFC
0x0000 %IX8.0
0x0001 %IX8.1
0x0002 %IX8.2
0x0003 %IX8.3
0x0004 %IX8.4 0x0004 %IX8.4
0x0005 %IX8.5 0x0005 %IX8.5
0x0006 %IX8.6 0x0006 %IX8.6
0x0007 %IX8.7 0x0007 %IX8.7
0x0008 %IX8.8
0x0009 %IX8.9
0x000A %IX8.10
0x000B %IX8.11
0x000C %IX8.12
0x000D %IX8.13
0x000E %IX8.14
0x000F %IX8.15
DI DI AI AI
750- 402 402 472
Bit 1 1
Word1 Word1
Word2 Word2
Bit 4 4
Fieldbus controller 750-842 • 57
Example of process input image
DI
DI AI
AI
472 402 476 402 476
1 1 1 1
Word1 Word1
Word2 Word2
4 4
DI: Digital Input
AI:Analog Input
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