3.
Run VCOM software to set port mapping. Port 1 is related to COM4 port.
4.
Run the modbus master application (e.g. Modbus Poll) and set parameters as shown
5.
Modbus master application (e.g. Modbus Poll) reads data from modbus sensor susecssfully.
User's Manual of ICS-2x00T Serial Device Server Series
Figure 4-5-31: VCOM Software
Figure 4-5-32: Modbus application Configuration
Figure 4-5-33: Modbus Poll Connection
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below.