SR05-D1A3-PV manual v1801 35/83
5.8.2 Connecting SR05-D1A3-PV to a PC
SR05-D1A3-PV can be accessed via a PC. In that case communication with the sensor
can be done via the user interface offered by the Sensor Manager software (see the next
chapters) or by any other Modbus testing tool.
Depending on the available ports on the PC, either an RS-485 to USB converter or an RS-
485 to RS-232 converter is used. The figure below shows how connections are made. The
converter must have galvanic isolation between signal input and output to prevent static
electricity or other high-voltage surges to enter the data lines. An external power supply
is required to power the SR05-D1A3-PV (5 to 30 VDC). An RS-485 to USB converter is
usually powered via the USB interface in which case no external power is needed to feed
the converter. If an RS-485 to RS-232 converter is used the converter may need an
external power source. This may be the same supply used for the SR05-D1A3-PV.
Figure 5.8.2.1 Connecting SR05-D1A3-PV to an RS-485 to USB converter and a PC
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