Where did RS232 come from?

What is RS232 and what is the term’s history?

In the early 1960’s, a standards committee, today known as the Electronic Industries Association, developed a common interface standard for data communications equipment. At that time, data communications were thought to mean digital data exchange between a centrally located mainframe computer and a remote computer terminal, or possibly between two terminals without a computer involved.

These devices were linked by telephone voice lines and consequently required a modem at each end for signal translation. While simple in concept, the many opportunities for data error that occur when transmitting data through an analog channel, as it requires a relatively complex design.

It was thought that a standard was needed first to ensure reliable communication, and second to enable the interconnection of equipment produced by different manufacturers, thereby fostering the benefits of mass production and competition. From these ideas, the RS232 standard was born. It specified signal voltages, signal timing, signal function, a protocol for information exchange, and mechanical connectors.

If a proprietary or special high-speed transfer method is required by the CNC control, the customer may have to be upgraded to Predator DNC. Unlike the Editor, Predator DNC is designed to support proprietary and special high-speed transfer methods. Refer to our DNC Objects section for more details.

About RS232 Serial solutions we offer:

Our Serial Connect line is perfect for shop floor workers inclined to use a traditional RS232 cabling connection to machine tools. These products are compatible with new & legacy RS232 CNCs, serial equipment, point of sale applications, & other mobile devices.

With options to link up via CAT5/6 Ethernet cables or direct ports to PCs, & even for new laptops with only USB connections, we can connect you. The USB-to-Serial converter is the perfect accessory for laptops computers that do not have a traditional 9pin RS232 port. Connect your CNC control to your computer using our RS232 serial cables & adapters – they are pinned & available in various lengths.