SARAD GmbH
15
Manual_Smart-Radon-Sensor_EN_12-03-2020.docx
IEEE 745 float values (4 Byte) are transmitted as two sequential 16 bit registers. The number of
registers to be read must be two. That means, only one value can be transmitted per frame. Other
values and not stated register addresses will cause an exception response.
USB
The additional communication interface, conform to USB standard, allows user to read out the
measurement data and to adjust the operating parameters of the Smart Radon Sensor. The interface
requires a software driver which can be downloaded from the SARAD company website. Within the
Radon Vision software the USB communication path appears as a new COM port. During USB
communication with the instrument the RS-485 terminal of the device is disabled. On the other hand
the analogue output (current loop) and the alert switch are still available and active.
Warning: In case of the USB transmission only SARAD protocol will be supported independent from
„protocol switch”. After detaching the USB cable from the instrument the RS-485 interface will be
reactivated with protocol selection according to the position of the slide switch.
The device cannot be powered via the USB port.