Figure 16 Data exchange between PROFIBUS master device and GW-7557
The GW-7557 downloads the parameter and configuration from PROFIBUS
master device to be the module parameters. The GW-7557 and PROFIBUS master
device have different data type and data address, the GW-7557 can transfer
different data format to PROFIBUS master device through module parameters.
3.2 HART data exchange
HART protocol belongs to Master-Slave communication and it uses query and
response message to arrive at data exchange and device control, as shown in
Figure 17
.
GW-7557 PROFIBUS/HART Gateway User Manual
(Version 1.00, Dec/2011)
PAGE: 19
