B&B Electronics GW-7553 - Manual - Manual (Page 20)

GW-7553 PROFIBUS/Modbus TCP Gateway User Manual (Version 1.00, Dec/2008) PAGE: 20
When the GW-7553 acts as a Modbus Master device, it can get query message
through module parameter and DO、AO data and send query message to Modbus
Slave device. It can also receive response message form Modbus Slave device and
then saving to internal DI、AI memory space, as shown in figure 18
、
19.
Figure 18 GW-7553 output data to Modbus Slave devices
Figure 19 GW-7553 receive data from Modbus Slave devices