Motrona UZ210, Руководство по эксплуатации, Страница: 13 / 27

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4.6. The Serial Interface
Both, a serial RS 232 interface and a RS 485 interface are available on the unit; however the
converter can only communicate by one or by the other interface, but not by both at a time.
Serial communication allows readout of internal measuring and conversion results and is also
required for setup and commissioning of the unit.via PC.
5
4
3
2
1
9
8
7
6
GND
TxD
RxD
RS232 T+
T-
R+
R-
RS485
Sub-D-9 (female on unit site)
Pin assignment of the serial connector
5
4
3
2
1
9
8
7
6
5
4
3
2
1
9
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
9
6
GND
TxD
RxD
PC UZ 210
TxD
RxD
Connection of a PC to the RS 232 interface **)
T+
T-
RS485- Bus
(4 wire)
R+
R-
5 4 3 2 1
9 8 7 6
UZ 210
First Bus
Participant Last Bus
Participant
*) *)
Communication with other control devices via RS485 bus (4-wire) *)
*) For recommendations about screening and signal termination please refer to the document
“General Rules for Wiring, Screening and Earthing” available under the Support section of our website.
**) Please connect only pins 2, 3 and 5 as shown. Connection of the other pins (e.g. by using a fully
occupied 9-conductor cable) will cause problems with communication.
Where both, RS232 and RS485 interface are in use, you can communicate by the one
or by the other, but not by both interfaces at the same time.