Siemens RUGGEDCOM RS416PF, Installation Manual

Page: 38 / 56

Communication Ports
4.4 Serial Ports
State Description
Off No link detected
For specifications on serial ports, refer to "Serial Port Specifications (Page 37)" .
The following is the pin-out description for ST, DB9 and RJ45 serial ports:
Fiber Serial Port
2 1
1
Tx Connector
2
Rx Connector
Figure 4.8 ST Port
Serial DB9 Port
6 9
5 1
Figure 4.9 Serial DB9 Port Pin
Configuration
Mode Pin
RS232 DCE RS485 RS422
1 DCD
a
2 TX
b
TX/RX+ TX+
3 RX
b
RX+
4 DTR
a
5 Common (Isolated) Ground
6 DSR
a
RX-
7 RTS TX/RX- TX-
8 CTS
9 RI
c
Shield Chassis Ground
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
29