User's Guide _______________________________________________________________________
72 _______________________________________________________________________________
1 2 3 4 5
6 7 8 9
+
–
RxD
GND
TxD
Ch1+
Ch1–
Ch2+
Ch2–
A
N
A
LO
G
O
U
TPU
TS
U
SER
PO
R
T
PO
W
ER
R
S-
23
2
10
…
36
V=
24
V~
IOIOI
0506-033
Figure 47
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.
TRANSMITTER/5.00
>
In RUN mode a measurement output starts immediately after power-
up.
In POLL mode, the transmitter does not output anything after power-
up (see section SMODE Seite 121).
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 or the USB-RJ45 Serial Connection
Cable. 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.
