WAGO 750 Series - Example for an Input Process Image

128 • Process Image
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
6.2 Example for an Input Process Image
The following figure is an example of an input process image.
The configuration comprises 16 digital and 8 analog inputs.
The input process image thus has a data length of 16 bytes for the analog
modules and 2 bytes for the digital modules, i.e 18 bytes in total.
Bit 1
Bit 4
Byte1
1
4
1
4
11
4
1
DI
DI DI
DI
AI
AI
AI
AI
0x0001
0x0000
LINK
MS
NS
ETHERNET
TxD/RxD
I/O
750-341
Byte2
0x0003
0x0002
DI: Digital Input
AI: Analog Input
Addresses
Process input image
(Byte)
Input modules 750- 402 402 472 472 402 476 402 476
Byte1
Byte2
Byte 3
Byte 4
Byte 2
Byte 1
Byte1
Byte2
Byte 3
Byte 4
Byte 2
Byte 1
Byte1
Byte2
Byte 3
Byte 4
Byte 2
Byte 1
Byte1
Byte2
Byte 3
Byte 4
Byte 2
Byte 1
Byte1
Byte2
Byte 3
Byte 4
Byte 2
Byte 1
Byte1
Byte2
Byte 3
Byte 4
Byte 2
Byte 1
…
…
…
…
0x000F
0x000E
0x000D
0x000C
0x0010
0x0011
Fig. 6-1: Example of an input process image g086015d