Connect Tech Blue Heat/Net Manual do Utilizador Página 87

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Connect Tech Blue Heat/Net User Manual
Revision 0.17 87
Pinouts
RS-232 and RS-485
RS-232
RS-485
Signal
DB-9
RJ-45
Signal
DB-9
DCD
1
3
RXD+
1
RXD
2
4
RXD-
2
TXD
3
5
TXD+
3
DTR
4
7
TXD-
4
GND
5
6
GND
5
DSR
6
2
CTS-
6
RTS
7
1
RTS+
7
CTS
8
8
CTS+
8
RI
9
N/A
RTS-
9
Figure 50: RS-232 and RS-485 pinouts
Cabling Examples:
Typical RS-232 null modem connection:
This is used to connect to DTE type devices.
The Blue Heat/Net is a DTE type device.
Used when Hardware RTS->CTS flow control is required.
This cable is also called a cross over cable and is commonly available at any Electronics
retailer/distributor.
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