June 2022 – TD 320 OPERATING MANUAL – TURBIDITY SENSOR 4296
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Stand-alone Sensor configuration using Terminal Software
This chapter describes how to communicate with the Turbidity Sensor using the RS-232
connection and Terminal Software. The sensor can be set to any mode but the mode setting and
setting of the different properties will influence on the output from the sensor.
5.1
Sensor versions and interface
The 4296 sensors can be used on a SeaGuardII and SmartGuard (AiCaP) Dataloggers or
connected to a RS-232 com-port (PC or other devices with RS232 com-port or a serial to USB
konverter).
5.2
Communication setup
Most terminal programs can be used for
RS-232
communication with the sensor when connected
to a PC, e.g. TeraTerm.
The following setup should be used:
9600 Baud
8 Data bits
1 Stop bit
No Parity
Xon/Xoff Flow Control
IMPORTANT! The terminal program must send a Line Feed after each Carriage Return.
Note! If using Tera Terminal Pro, after setting up the com port according to settings above
please select “Terminal” in the “Set up” menu and click “Local echo” also select “CR+LF”
for both “Receive” and “Transmit” under “New line”.
Note! If using Hyper Terminal the options “Send line ends with line feeds” and “Echo line
ends with line feeds” in the HyperTerminal ASCII setup must be selected.
5.3
Sensor startup
You will be able to communicate with the sensor via the Terminal software regardless of which
mode the sensor is set to. However, the output string from the sensor will depend on the mode
setting. The final structure of the output string will also depend on settings like Enable Text,
Enable Decimal Format, Enable Raw Data, and so on. In Smart Sensor Terminal and AADI Real-
Time mode the sensor will continue to output measurements after the first startup info. The output
frequency will be according to the interval setting. Some properties will not have any effects in all
modes but they will still be available. Some properties may also have different effects depending
on the mode.