10226-2200PE

D-Shaped Connectors - Centronics

The 10226-2200PE application field and working principle cover a wide range of applications, particularly in the realm of connecting multiple computers and networks. It is part of what is known as a Centronics bus, which operates through a simple, daisy chain architecture.

Overview

Centronics was developed by Centronics Data Computer Corporation of Glendale, California in 1969, and is still widely used today. Centronics bus (sometimes referred to simply as "Centronics") is a relatively simple but robust protocol, routinely used for connecting one or more printers to a single computer. It was originally intended to be a method of connecting dot matrix printers, such as the 2250/2200PE and 10226, but over time it has evolved to include a variety of other peripheral devices and systems.

Cable

The cable commonly used in Centronics bus applications is an 8-pin (or occasionally a 10 or 20-pin) straight-through cable, also known as a D-shaped connector. The 8-pin version is the most common and consists of a flat plug head fitting into a circular port. The plugs and ports are keyed, so they can only be connected one way, in order to minimize the risk of connection mistakes.

Data Transfer

The data transfers over the Centronics bus are done on a parallel basis, meaning that each bit of data travel simultaneously, over a single pin. This parallel data transfer allows for an increased rate of data transmission between the devices connected to the bus. This is a great advantage over serial data buses like RS-232, which send data one bit at a time.

Control Lines

The Centronics bus also contains five control lines, which are used to direct the flow of data to and from the devices in the network. These control lines are used to signal the various devices on the bus when it’s time for them to send or receive data.

Power

The 10226-2200PE and the 10226 series of devices require a certain amount of power to operate properly, so the Centronics bus also provides two lines over which DC power can be supplied to the connected devices. This feature allows for greater flexibility in connecting multiple devices to the bus.

Conclusion

The 10226-2200PE and 10226-PE series of Centronics buses are relatively easy to install, inexpensive, and offer a great deal of flexibility in connecting multiple devices to a network. This makes Centronics a great choice for a wide range of applications, and is particularly useful for connecting printers and other peripheral devices.