Chapter 6 ________________________________________________________  Connection Options
VAISALA_______________________________________________________________________ 51
CHAPTER 6
CONNECTION OPTIONS
This chapter contains instructions for configuring the communication 
with the sensor.
Communication Protocols
As soon as WMT52 has been properly connected and powered the data 
transmission can be started. The communication protocols available in 
each of the serial interfaces are shown in the following table.
You have chosen the communication protocol (ASCII, NMEA 0183 or 
SDI-12) when placing the order. In case you want to check and/or 
change the protocol or other communication settings, see the following 
sections.
Table 3 Available Serial Communication Protocols
Serial Interface Communication Protocols Available
RS-232 ASCII automatic and polled
NMEA 0183 v3.0 automatic and query
SDI-12 v1.3 and SDI-12 v1.3 continuous measurement
RS-485 ASCII automatic and polled
NMEA 0183 v3.0 automatic and query
SDI-12 v1.3 and SDI-12 v1.3 continuous measurement
RS-422 ASCII automatic and polled
NMEA 0183 v3.0 automatic and query
SDI-12 v1.3 and SDI-12 v1.3 continuous measurement
SDI-12 SDI-12 v1.3 and SDI-12 v1.3 continuous measurement