Db25 Rs232 Cable Pinout

Commonly used rs232 null modem pin out for db25 and db 9 connectors.

Db25 rs232 cable pinout.

Save as pdf pins commonly used for rs 232 serial. Rs 232 pinouts for db25 and db9 connectors last updated. Wiring pinout and signals for full rs232 connector. Rs232 v 24 alt a connector.

Whenever rs232 is used rs232 cables will be needed to provide the required electrical connection. A computer s serial com port dte is usually a male port as shown below and any peripheral devices you connect to this port usually has a female connector dce. Rs232 port db25 serial port. Most of the pins on db 25 connectors are not connected since only nine pins are used for rs 232 rs 422 and rs 485 communication.

Pinout of epson serial rs 232 cable db9 to db25 and layout of 9 pin d sub male connector and 25 pin d sub female connectorfor epson thermal impact receipt printer cable pinouts. The maximum cable length for rs 232 is 50ft but in practise depends on baud rate cable specific capacitance and ambient noise. The original pinout for rs232 was developed for a 25 pins sub d connector. Rs232 pinout below is the pinout of a typical standard male 9 pin rs232 connector this connector type is also referred to as a db9 connector.

To perform a loopback test with no hardware flow control with a db 25 connector connect pins 2 to 3 for rs 232. These cable can take a variety of forms in terms of the physical methods used for construction as well as the number of connections that are incorporated within the overall rs232 cable. Db25 v 24 pinout and signals alt a connector fig 5. Rs 232 maximum cable length.

Since the introduction of the smaller serial port on the ibm at 9 pins rs232 connectors are commonly used. Db25 v 24 pinout and signals. Each pin in a 9 or 25 serial connector pinout has its own distinct function. Com port pinout and configuration.

For rs 422 485 connect pins 5 to 20 and 7 to 22. Rs232 db25 to db9 converter. These d sub connectors can terminate with an rs232 female pinout or db25 or db9 male connector pins. The table below contains some rules of thumb from experiments done by texas instruments years ago.