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TIP866-TM-20 User Manual Issue 1.3
Page 9 of 10
4 RJ45 Pin Assignment
Pin No.
RJ45
RS232 DTE
( Jn1 )
RS232 DCE
( Jn2 )
RS422 DTE
( Jn3 )
RS422 DCE
( Jn4 )
RS485
( Jn3 )
1 DCD DTR
2 RTS CTS
TXD+
RXD+
DX+
3 GND GND
GND GND
GND
4 TXD RXD
TXD-
RXD-
DX-
5 RXD TXD
RXD-
TXD-
6 GND GND
GND GND
GND
7 CTS RTS
RXD+
TXD+
8 DTR DCD
Figure 4-1 : Pin Assignment of RJ45 Connector TIP866-TM-20 Channel 1 and 2
Pin No.
RJ45
RS232 DTE
( Jn1 )
RS232 DCE
( Jn2 )
RS422 DTE
( Jn3 )
RS422 DCE
( Jn4 )
RS485
( Jn3 )
1 (+5V) (+5V)
(+5V)
(+5V)
(+5V)
2 RTS CTS
TXD+
RXD+
DX+
3 GND GND
GND GND
GND
4 TXD RXD
TXD-
RXD-
DX-
5 RXD TXD
RXD-
TXD-
6 GND GND
GND GND
GND
7 CTS RTS
RXD+
TXD+
8
Figure 4-2 : Pin Assignment of RJ45 Connector TIP866-TM-20 Channel 3 to 8
Jn1 to Jn4: n = 1 to 8 identifies jumper fields for serial channel 1 to 8.
Default configuration for TIP866-TM-20: jumper installed on Jn1 =>
RS232 DTE
.
Channel 1 and 2 of the TIP866-TM-20 additionally support DCD and DTR for the TIP866-10.
Support of +5V on pin 1 of the RJ45 connector for channel 3 to 8 is jumper selectable (Jn5: 9-
10) and re5V connected to connector X9 (2 pin screw terminal).
Do not use the on board termination of the TIP866-TM-20 when connecting a TIP866-20 (RS422)
because there are termination resistors on the TIP866-20 !
Figure 4-3 : RJ45 Pinning