Serial line communication, User port connection, Figure 49 – Vaisala PTU300 User Manual
Page 83: Table 16, On serial line communication on pa
Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 81
Serial Line Communication
Connect the serial interface by using either the user port or the service
port.
For permanent interfacing to host system, use the user port. You can
change the serial settings and operate in RUN, STOP, SEND, POLL, and
MODBUS modes.
For temporary connections use the service port. Service port is always
available with fixed serial settings.
0605-039
Figure 49
Service Port Connector and User Port Terminal on
Motherboard
The following numbers refer to Figure 49 above:
1
=
Service port connector
2
=
User port terminals
User Port Connection
Use suitable serial cable between the user port RxD, GND and TxD
screw terminals and the PC serial port, see Figure 50 on page 82.
Table 16
Default Serial Communication Settings for the User
Port
Parameter
Value
Bits per second
4800
Parity
Even
Data bits
7
Stop bits
1
Flow control
None