Vaisala WMT52 - Manual (Page 56)

User’s Guide ______________________________________________________________________
54 ___________________________________________________________________M210925EN-B
Service Cable Connection
The USB Service Cable has a snap-on connector for the M8 connector
of the service port. The service cable connection is recommended for
checking and changing the device settings. When making the changes,
use the Vaisala Configuration Tool or a standard PC terminal program.
The USB service cable is included in the Service Pack 2, see Table 18
on page 118 . For a picture of the service cable, see Figure 5 on page 19 .
When you connect the USB service cable between the service connector
and PC USB port, the service port settings are forced automatically to
RS-232 / 19200, 8, N, 1. At the same time, the main serial port at M12
connector and at screw terminals is disabled.
1. Make a connection between the USB port of your PC and the M8
service port connector on the bottom plate of the sensor by using
the USB service cable. See
Figure 3 on page 18 .
2. Open the Vaisala Configuration Tool, or a terminal program.
3. Select the COM port that has been reserved for the USB cable, and
select the following default communication settings:
19200, 8, N, 1.
4. Use the Vaisala Configuration Tool or a terminal program to make
the desired configuration changes. When working with a terminal
program, see section
Communication Setting Commands on page
56 .
5. When removing the service cable, support the sensor while pulling
on the snap-on connector. The connection is tight, and it is possible
to change the alignment of the sensor if you pull too hard.
NOTE Changes in the serial interface/communication protocol/baud settings
take place when disconnecting the service cable or when resetting the
sensor.
If these settings are not changed during the service connection session,
original main port settings (at M12 and screw terminals) are returned,
as soon as the service cable is disconnected from either end.