How to install a Sx2WEB system
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1.5 How to connect the energy meters
COM port 2 of the Sx2WEB24 is an RS-485 port with Modbus master capability. COM port 1 can be
configured as Modbus master or Modbus slave.
The Sx2WEB24 is a data logger that collects data from the energy meters.
Up to 128 energy meters can be connected to one Sx2WEB24:
Up to 64 can be connected to COM2 port;
Up to 64 can be connected to COM1
only if
it is configured as Modbus master;
The data is saved in an .XLSX or .CSV file and can be downloaded by using the Sx tool or the
webserver of the Sx2WEB24, accessing it with a PC.
An example of the connection between an energy meter and the Sx2WEB24 is shown below:
Different types of energy meter can be mixed, and they can also have different baud rate (see the Sx
tool software manual for more details about how to configure the Sx2WEB24 to manage them).
N.B. The energy meters should be configured and connected to the load as described in the
relevant instruction manuals. No configuration nor discovery can be carried out using the Sx
tool software.
For more details about the wiring of the RS-485, please refer to appendix A.
