GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual
(Version 1.60, May/2017)
PAGE: 43
7552-M will return to wait parameterization.
4.8 Data exchange example
In this example a Modbus master device simulated by a PC program sends query
message and receives response message from a Profibus master via the GW-7552-
B gateway.
In the following example the SIEMATIC S7-300 CPU313C-2 DP is used. The
configuration and communication is done by the program “Step 7 Manager”
provided by SIEMENS.
Step 1: Copy the GSD file and assign the GW-7552-B a valid station
address (Please refer to the section 4.2 GSD file).
Step 2: Connect the RS-232 port of the GW-7552-B module to a COM port
of the PC and the Profibus port to a Profibus master (
Figure 37
).
Figure 37 Wiring diagram between PC and GW-7552-B
Step 3: Set GW-7552-B parameter “Modbus type” to slave, as to other
parameters please remain as default. Please refer to section 4.3 the
Configuration of the common parameters for setting instructions.
Shown as the diagram below.