[CentOS] is it possible to login to a switch via RS232 / serial port from the shell?

> I have changed the comms in minincom to use /dev/tty0 & the baud rate to
> 9600, yet I can't seem to connect with minicom. Does anyone know how to
> connect to a serial device from the console?

This works for me with our Cisco console cables:
sudo yum install picocom
sudo picocom /dev/ttyS0

BR Bent