GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual
(Version 1.60, May/2017)
PAGE: 24
Figure 22 GW-7552-B / GW-7552-M output data to modbus slave devices
Figure 23 GW-7552-B / GW-7552-M receive data from modbus slave devices
When the GW-7552-B / GW-7552-M acts as a Modbus slave device, it can
receive query message from Modbus master device and then saving to internal
DO
、
AO memory space. It can also send response message to Modbus master
device through internal DI
、
AI data
,
as shown in
figure 24
、
25
.