S5-100U Connecting the S5-100U to SINEC L1
13.3 Coordinating Data Exchange in the Control Program
After you set the parameters, the control program for data exchange has to be created. The control
program relies on the coordination information that the operating system makes available in the
coordination bytes (see Figure 13-3).
Figure 13-3. Data Exchange between Sender and Receiver (Principle)
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RAM
Sender (source)
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L1 bus
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Control program
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KBS
KBE
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Control program
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KBS
KBE
In the following paragraphs, you will learn how to control the sending and receiving of data after you
have set the parameters in DB1.
There is an example in section 13.3.3 of how you must program the data exchange in a function
block.
EWA 4NEB 812 6120-02
13-7
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