Vaisala PTU300, Руководство пользователя

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User's Guide ______________________________________________________________________
74 _______________________________________________________________ M210796EN-C
User Port Connection
Use suitable serial cable between the user port RxD, GND and TxD
screw terminals and the PC serial port, see Figure 46 below.
Table 14 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
1 2 3 4 5
6 7 8 9
+
–
RxD
GND
TxD
Ch1+
Ch1–
Ch2+
Ch2–
ANALOG OUTP
UTS
US
ER
PO
RT
POW
ER
RS
-2
32
10
…
36 V
=
24
V~
IOIOI
0506-033
Figure 46 Connection Example Between PC Serial Port and
User Port
Connections to pins 4,6,7 and 8 on PC serial port are required only if
you are using software requiring hardware handshaking.
After power-up the transmitter (in STOP-mode) outputs the software
version and the command prompt.
PTU300 / 3.01
>
In RUN mode a measurement output starts immediately after power-
up.
NOTE User port cannot be used when the RS-485 module is connected.