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142 • I/O Modules
Design of the Process Data for PROFIBUS-DP
WAGO-I/O-SYSTEM
750
Bus System
5.2.17 4 AO I/O Modules
750-551, 750-553, 750-555, 750-557, 750-559
Process Image Length in [Byte]
Register communication possible
Input
Output
Yes 12
12
No 0
8
Mapping with Register Communication
Data format
MOTOROLA
INTEL
I/O
area
Input Output Input Output
S0 C0 S0 C0
D1 D1 D0 D0
Channel 1
D0 D0 D1 D1
S1 C1 S1 C1
D3 D3 D2 D2
Channel 2
D2 D2 D3 D3
S2 C2 S2 C2
D5 D5 D4 D4
Channel 3
D4 D4 D5 D5
S3 C3 S3 C3
D7 D7 D6 D6
Channel 4
D6 D6 D7 D7
Mapping without Register Communication
Data format
MOTOROLA
INTEL
I/O
area
Input Output Input Output
- D1 - D0
Channel 1
- D0 - D1
- D3 - D2
Channel 2
- D2 - D3
- D5 - D4
Channel 3
- D4 - D5
- D7 - D6
Channel 4
- D6 - D7