Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 75
1 2 3 4 5
6 7 8 9
+
–
RxD
GND
TxD
Ch1+
Ch1–
Ch2+
Ch2–
ANALOG OUTPUTS USER PORT POWER
RS-232 10…36 V=
24 V~
IOIOI
0506-033
Figure 49 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.
Service Port Connection
Connection Cables
To connect to the service port, you need a suitable cable with an RJ45
connector. Depending on the connections of your PC, you can either use
the Serial Connection Cable (optional accessory 19446ZZ) or the USB-
RJ45 Serial Connection Cable (optional accessory 219685). The USB
cable enables you to connect the transmitter to a PC via a standard type A
USB port. Note that the USB cable does not enable high speed data
transfer, since the bit rate is limited by the serial interface of the service
port.
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