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model 3000 PROFIBUS Module User’s Manual
Chapter 4 Operation and Function
4
A conceptual diagram of cyclic transmission is shown below.
The I/O address of the slave is set from the configurator.
Figure 4-1 Cyclic transmission
Figure 4-2 Cyclic transmission (PF311 and PF312 combination)
Output
Area
Input
Area
Output
module
Output
module
Output
module
Input
module
Input
module
Input
module
Slave
Master
100h
200h
0h
2h
4h
0h
2h
4h
Output
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Output
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Input
Input
Output
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Controller
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Area
PROFIBUS-DP
Output
Area
Input
Area
Slave (PF312)
Master (PF311)
100h
200h
200h
100h
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Controller
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Area
PROFIBUS-DP
Input
Area
Input
Area
Controller
Output
Area
Output
Area