9 Pin Null Modem Cable Pinout

Null modem cable with handshake.

9 pin null modem cable pinout.

Using com ports you can set up communication between two computers. A db 25 connector has a b size shell but the common nine pin connector is smaller and has an e size shell. The e refers to the shell size. 9 pin d sub female to computer 2.

You can use. 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. There are a lot of details to consider when arranging the pins between male and female connectors on a serial cable or serial device. This solution is not perfect as it does not provide high speed data transfer.

The purpose of a null modem cable is to permit two rs 232 dte devices to communicate with each other without modems or other communication devices i e dce s between them. The de 9 d sub 9 pin connector is often mistakenly referred to as the db 9 connector. Db 25 pin fg frame ground 1. Db 9 pin db 9 pin.

Simple null modem cable. The pinout of the db 9 connector can be confusing when cabling an rs232 line. D sub 1 d sub 2. Here s a good set of figures for db 9 male and female connectors as viewed from the pin side not the solder side.

The startech mxt100ff is an example of a straight through cable. A standard null modem cable is the solution. This connector regardless what you call it is used for a variety of purposes. The null modem s universal cable supports both 9 and 25 pin connectors enabling you to transmit data between your two machines.

This cable may be used to connect any rs 232 equipped device to computer connect two computers via com serial port and so on. For this to work the transmit txd pin of one device needs to be connected to the receive rxd pin of the other device and vice versa. Use this cable between two dte devices for instance two computers. Db9 pin d sub female to pc1.

Use this cable to connect two devices equipped with serial rs 232 interface. If you re using a serial cable or null modem cable for local serial connectivity or for modem replacement you might consider looking at the traversix network connectivity solutions. The two main things to be concerned about are the pinout and the gender. Null modem cable pinouts.

A null modem or crossover cable is used to connect to dte devices together. Pinout of null modem cables and layout of 9 pin d sub female connector and 25 pin d sub female connectorde 9 to de 9 de 9 to de 25 cables. 9 pin d sub female to computer 1.