Kžížený seriový kabel - crossover cable RS232

Jak zapojit seriový křížený kabel (kabel do COM portu)
How to do crossover cable RS232
pinout (wire diagram)
2-3
3-2
5-5


schema-popis zapojení RS232 COM portu
serial port pinout


RS232 loopback


Null modem - nulový modem
(female - female, samice-samice)

is - was using for example to connection between (DTE-DTE) two computers without modems or computer and serial modem




Null modem pinout
DB9

Download RS232 software utilities testovací aplikace ke stažení
Virtual serial port driver
rs232 data logger
rs232 monitor