Serial Port Pinout And Use; Wiring For Remote Access - Digi 6350-SR User Manual

Serial port setup

Serial port pinout and use

The RS232 standard requires support for baud rates up to 9600 baud on shielded multicore cable up
to 50 feet (15 meters) long. For the 635x-SR, the use of standard CAT 5 cables enables serial
communication at all baud rates up to 50 feet. CAT5 unshielded twisted pair cable lengths much
longer than 50 feet have been verified at 9600 baud but are non-standard and are not guaranteed.
The Digi 6350-SR/6355-SR RS232 serial port is DTE and has the following pin configuration.
Pin 1 CTS
Pin 2 DTS
Pin 3 TXD
Pin 4/5 —
Pin 6 RXD
Pin 7 DCD
Pin 8 RTS
Note Ring indicate (RI) and data set ready (DSR) are not implemented.
The serial ports use a female RJ45 jack to enable connection using UTP Ethernet cabling.

Wiring for remote access

The serial port of the Digi 6350-SR/6355-SR has the same pinout as most common router console
ports. Therefore, it is recommended to use a rollover Ethernet cable if the Digi 6350-SR/6355-SR serial
mode is set to Remote access, since the pins have to be reversed in order to provide remote access
into a secondary router's console port.
Digi 6350-SR/6355-SR LTE Router User Guide
Clear to send
Data terminal ready
Transmit data
Ground
Receive data
Data carrier detect
Request to send
Serial port pinout and use
Input to Digi 6350-SR/6355-SR
Input to Digi 6350-SR/6355-SR
Output from Digi 6350-SR/6355-SR
Signal ground
Input to Digi 6350-SR/6355-SR
Outpu from Digi 6350-SR/6355-SR
Outpu from Digi 6350-SR/6355-SR
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