No output on serial

RouterOS Beginner Basics
1

Hi all,

I am trying to get a serial console working on my RB411. I don’t own a computer with a serial port, but I have a USB to serial adaptor, installed correctly and using COM3. When I plug it in to the router and reboot, I see no output, and no data flows according to Eltima RS232 logger. This leads me to believe it is the mikrotik that is the problem. Here are my relevant config files:

[admin@Knox] > system console export 
# jan/02/1970 00:03:57 by RouterOS 4.6
# software id = XXXX-XXXX
#
/system console
add disabled=yes port=serial0 term=MyConsole

[admin@Knox] > port export 
# jan/02/1970 00:04:11 by RouterOS 4.6
# software id = XXXX-XXXX
#
/port
set 0 baud-rate=115200 data-bits=8 flow-control=none name=serial0 parity=none \
    stop-bits=1

Can anyone see why this might not be working?

Thanks

2

I would try this

/system console
set 0 disabled=no

3

I disabled it while following a wiki article… Enabling makes no difference :frowning:

4

The serial cable for the MT routers must be a null modem type. The data lines are crossed. If you are using a standard cable, that would cause your problem.

5

Ok… well how can I tell? And can I get a null modem to usb adaptor?

6

In your case, it may be easier to get an adapter that goes between the rs232 port on the MT router and your current rs-232 to usb adapter. You can get them online for around $5 US. Google “rs232 null modem adapter”.

ADD: Get the correct gender ports. If your connector fits into the serial port on the router, then you need a DB9 Male Female.

7

Ah ok, that’s probably the best thing to do. I have a gender changer for the usb-serial adaptor, so any null modem adaptor I buy should do.

Thanks