700-SDI-RADAR-300WL-Man Rev 2 11 Apr Mar 2022
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Part# 21371
4.2.2
SERVICING PROTOCOL (RS-232)
The servicing protocol is used to retrieve and modify the device operating parameters. Various
device settings, such as unit system and filtering parameters are configured using this protocol.
Since NMEA protocol is one way (it only outputs the data), the servicing protocol is always active.
Easy configuration is done using the PC application, Configurator utility. Details can be found in
Chapter 6. The servicing protocol used between the Configurator Utility and the flow meter device is
transparent to users. The Configurator utility is described in Chapter 5.
The servicing protocol listens on RS-232 serial port for incoming requests, and on each received
request, it will answer back.
The following requests are recognized by the servicing protocol:
Change units type:
Sets the units type in which the target speed is reported.
#set_units=kmh
#set_units=mph
#set_units=fps
#set_units=fpm
#set_units=ms
#set_units=mms
Change radar sensitivity:
Changes the sensitivity of the radar sensor.
#set_thld=<0-100>
Change SNR threshold:
Changes the minimum threshold SNR. It is set as value in dBm * 256. If
the current SNR is below the defined threshold, the instrument will not report any velocity and
will assume there is no water movement.
#set_thld_snr=<0-5120>
Change detected targets direction:
Changes the parameter that specifies which flow direction
will be reported.
#set_direction=in
#set_direction=out
#set_direction=both
Change serial port baud rate:
Changes the parameter that specifies the baud rate speed used
by serial communication line; the same value is used for both RS-232 and RS-485.
#set_baud_rate=9600
#set_baud_rate=19200
#set_baud_rate=38400
#set_baud_rate=57600
#set_baud_rate=115200
