Owner's manual

QDR – QTech Digital Radio – Owners Manual – v1.3 – August 2012 7
www.qtech.co.nz Tel: [phone]
5.0 Applications
5.1 RS232 Mode
This is used for serial data communications.
A typical use of this mode would be:
The serial cable is connected from the RS232 port of the QDR to an RS232 port of
the RTU.
Pinout of RS232 Port and interface cable connections.
D9 Pin Signal Input/Output Description RJ45
Pin
1 DCD Output Data Carrier Detect
2 RxD Output Receive Data 2
3 TxD Input Transmit Data 6
4 DTR Input Data Terminal
Ready
5 GND - Ground 5
6 - - Not Connected
7 RTS Input Request To Send
8 CTS Output Clear To Send
9 RI Input Ring Indication
5.2 RS485 – Half Duplex Mode
A typical use of this mode would be:
The serial cable is connected from the RS485 port of the QDR to the RS485/IPB port
of the RTU at a comms speed of 9600bps.
DATRAN RTU Remote I/O
Q23 or Q26
RS485
-
IPB
DATRAN
Master RTU
Slave RTU
RS232