Communication Protocol Transfer Theorem; Profibus Data Exchange - ICP DAS USA GW-7553-B User Manual

3. Communication protocol transfer theorem

3.1 PROFIBUS data exchange

The GW-7553-B / GW-7553-M is a PROFIBUS DP Slave device. The GW-7553-
B / GW-7553-M is first parameterized then configured and finally it goes into the
data exchange mode (Figure 11).
Figure 11 State machine of PROFIBUS DP Slave device
The GW-7553-B / GW-7553-M exchanges data cyclically between internal DI、
DO、AI、AO data and PROFIBUS Master device in data exchange mode, as
shown in Figure 12.
GW-7553-B / GW-7553-M PROFIBUS/Modbus TCP Gateway User Manual (Version 1.35, May/2017)
PAGE: 17