Communication protocol transfer theorem – B&B Electronics GW-7552 - Manual User Manual

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GW-7552 PROFIBUS/MODBUS GATEWAY User Manual (Version 1.40, Apr/2012) PAGE: 19

3. Communication protocol transfer theorem

3.1 Profibus data exchange

The GW-7552 is a Profibus DP slave device. The GW-7552 is first parameterized
then configured and finally it goes into the data exchange mode (Figure 15).

Figure 15 State machine of Profibus DP slave device

The GW-7552 exchanges data cyclically between internal DI、DO、AI、AO
data and Profibus master device in data exchange mode, as shown in figure 16.