Siemens RUGGEDCOM RS416PF Installation Manual page 38

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For specifications on serial ports, refer to
The following is the pin-out description for ST, DB9 and RJ45 serial ports:
Fiber Serial Port
1
1
2
Figure 4.8
Serial DB9 Port
Figure 4.9
a
The DSR, DCD and DTR pins are connected together internally.
b
In RS232 DCE mode, ports transmit to DTE devices on pin 2 and receive from DTE on pin 3.
c
RI is not connected.
Note
Pins 1, 4 and 6 and pins 7 and 8 are connected internally. In RS232 mode, these pins
enter a high impedance state. A DTE that asserts RTS will see CTS asserted. However,
the device will not perform hardware flow control.
RUGGEDCOM RS416PF
Installation Manual, 04/2021, C79000-G8976-1355-04
State
Tx Connector
Rx Connector
ST Port
5 1
9 6
Serial DB9 Port Pin
Configuration
No link detected
"Serial Port Specifications (Page
2
Pin
RS232 DCE
1
2
3
4
5
6
7
8
9
Shield
Communication Ports
4.4 Serial Ports
Description
37)".
Mode
RS485
a
DCD
b
TX TX/RX+
b
RX
a
DTR
Common (Isolated) Ground
a
DSR
RTS TX/RX-
CTS
c
RI
Chassis Ground
RS422
TX+
RX+
RX-
TX-
29