Installation
2.6.4 4 x RS232/RS485/RS422 via RJ-45
The figure below shows the RS400 when equipped with four RS232/RS485/RS422 RJ-
45 ports.
Figure 20: RS400 equipped with four RS232/RS485/RS422 RJ-45 ports
Each port is individually selectable via software to be RS232, RS485 or RS422. The RJ-
45 port is shown below.
Figure 21: RJ45 Port pin-out
Pin
RS232 Mode
RS485 Mode
RS422 Mode
1 DSR - RX-
2 DCD -
-
3 DTR -
-
4
Common (Isolated Ground)
5 RX - RX+
6
TX
TX/RX +
TX +
7 CTS -
-
8
RTS
TX/RX -
TX -
Shield Chassis
Ground
Table 4: RJ45 Port pin-out
NOTES:
1
No internal termination is provided.
2
Pins 1, 2, and 3 are connected internally. Pins 7 and 8 are connected internally. In
RS232 mode, these pins enter a high impedance state. A DTE that asserts DTR
and expects DSR or CD will operate correctly. A DTE that asserts RTS will see CTS
asserted, although the RuggedServer will not perform hardware flow control.
3
The Common terminals are optically isolated; however, there is transient voltage
protection circuitry between the Common terminals and chassis ground.
22
RuggedCom
®
RuggedServer™
RS400 Family Installation Guide rev109