Download MAN - QTP 16 - 5.20 - UK

grifo®
ITALIAN TECHNOLOGY
RS 485 CONNECTION
TX / RXTX / RX+
1
6
2
7
3
8
4
9
5
TX / RX -
RX / TX -
TX / RX +
RX / TX +
GND
GND
1
2
Master Remote System
9 Pin Connector
CN4 QTP 16
GND
5
FIGURE 12: RS 485 PIN-OUT AND CONNECTION EXAMPLE
Signals description:
TX / RX - =
I/O - Receive/Transmit Data Negative: Negative receive or transmit signal
for RS 485 differential communication
TX / RX - =
I/O - Receive/Transmit Data Negative: Negative receive or transmit signal
for RS 485 differential communication
GND
=
- Ground signal
NOTE
Only 9 bits Master-Slave communication is available in RS 485 mode.
Page 14
QTP 16
Rel. 5.20