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5Router communication
You gain access to router for communication purposes by connecting either the router’s serial port to your computer or by using an Ethernet connection.
Do not use both the router’s Ethernet port and
5.1Serial connection
Connection can by be made through the serial port(s) of the router;
The communication parameters are configurable. Please refer to the protocol documentation of the appropriate communication/control protocol.
Example: The protocol parameters s are as follows:
−Bit rate 19200 bit/s
−Data bits 8 bits
−Stop bits 1
−Parity: No parity
The DB9 female connector for the serial port(s) of the router has the following
Pin # |
|
1 | Not in use |
2 | Tx |
3 | Rx |
4 | Not in use |
5 | GND |
6 | GND |
7 | RTS |
8 | CTS |
9 | Do Not Connect! |
Note that if the standard
A cable with Male+Male or Female+Female connectors at the cable ends is used for Rx/Tx crossed connection, and
A cable with Male+Female connectors at the cable ends is used for a straight through connection.
5.1.1 Maximum cable length (RS-232)
IEEE has specified the maximum cable length for an
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