9 Pin To 25 Pin Null Modem Cable Pinout

This cable may be used to connect any rs 232 equipped device to computer connect two computers via com serial port and so on.

9 pin to 25 pin null modem cable pinout.

The e refers to the shell size. A db 25 connector has a b size shell but the common nine pin connector is smaller and has an e size shell. The null modem s universal cable supports both 9 and 25 pin connectors enabling you to transmit data between your two machines. Use this cable between two dte devices for instance two computers.

There is an answer to this dilemma. Two common applications are rs 232 eia 232 serial connections and the parallel printer interface on the ibm pc. 25 pin d sub female to computer 2. Serial rs232 null modem cable db9 db25.

Null modem communication refers to using a crossed over rs 232 cable to connect the teleprinters directly to one. Here s a good set of figures for db 25 male and female connectors as viewed from the pin side not the solder side. Db 9 pin db 9 pin. The db 25 connector is also used for scsi connections.

Db 25 pin fg frame ground 1. The de 9 d sub 9 pin connector is often mistakenly referred to as the db 9 connector. The db 25 connector is used for a variety of purposes. Kentek 25 feet ft db9 female to db25 male null modem serial printer cable adapter cord 28 awg f m molded d sub rs 232 crossover 9 to 25 pin for pc mac serial device 4 6 out of 5 stars 3 11 34 11.

Null modem is a communication method to directly connect two dtes computer terminal printer etc using an rs 232 serial cable the name stems from the historical use of rs 232 cables to connect two teleprinter devices or two modems in order to communicate with one another. Use this cable between two dte devices for instance two computers. Rs 232 pinouts for db25 and db9 connectors last updated. This connector regardless what you call it is used for a variety of purposes.

Commonly used rs232 null modem pin out for db25 and db 9 connectors. In general it will work with some software packages such as those that only use rts cts hardware flow control. Pinout and signals for building a serial rs232 nullmodem cable. Save as pdf pins commonly used for rs 232 serial.

We don t think that a null modem cable built to the above pinout will work quite as well but a lot of folks appear to have success with it. A standard null modem cable is the solution. D sub 9 d sub 25. Using com ports you can set up communication between two computers.