Serious About All Things Serial

Apr 6, 2015 9:01:12 AM / by Brittney Borowicz posted in coverters, Ethernet, General, Grid Connect, Products, RS422, RS485, Serial Communications, serial converters, Serial to Ethernet Adapter, Serial & USB, usb, USB to Serial, USB to Serial adapter, Wireless Serial, wireless serial adapter


USB to Serial

At Grid Connect we are experts in all things serial. We are committed to providing the best serial products. Our wide selection includes devices from USB to Serial and more.

Grid Connect has USB to Serial Adapter for you. We offer RS232 to USB, RS422 to USB, and RS485 to USB solutions. If you have tried a low cost USB to Serial Adapter and had issues in the past, check out our USB232. It features an advanced EXAR chipset which works in many scenarios where lower cost adapters fail.

Serial to Ethernet
Grid Connect has a huge selection of best in class Serial to Ethernet Adapters. Whether you have a serial port that is external or embedded, RS232, RS422, or RS485, 9 Pins, 25 Pins, or a Terminal Block, we have the way for you to get your Serial to Ethernet. Don’t see exactly what you need? Contact us about our Custom Serial to Ethernet Hardware Solutions.

RS485 & RS422
Need to convert RS232 to RS485 or RS422? We have the device for you! Grid Connect offers a wide selection of RS485 and RS422 converters and adapters.

Wireless Serial
Serial Communications are no longer limited to cable runs and distance issues with our Wireless Serial Adapters. Grid Connect offers Bluetooth, WiFi/802.11b/g, 900MHz, and other wireless serial connectivity options.

Other Converters
Our expert serial engineers know what it takes to work with serial devices. So we have put together a great selection of serial converters, adapters, null modems and other serial products.

For more information and to view all USB and Serial products designed to fit your needs, click here or call the Grid Connect office at +1 (630) 245-1445.

Read More

Serial Simplified: Serial Communications (1 of 3)

Jun 1, 2010 2:05:31 PM / by Adam Justice posted in General, Products, RS-232, RS-422, RS-485, Serial, Serial Communications

1 Comment

Serial Port

Serial data is still being sent today, one bit at a time, just as it has always been for over 50 years. While serial ports may not be as prevalent on new PCs these days, serial is still in use everywhere. The new PC standard USB has more software overhead and requires more advanced processors to implement, so serial will live on!


RS-232 can support data rates of up to 920 kbps (normally 9600 and 115.2K are the maximum rates) and is commonly found in 9 or 25 pin configurations, however only three pins are required. Most applications drop many of the less commonly used pins, though some configurations such as a data modem connect every pin for full handshaking capabilities. An RS-232 is a point to point connection made between a Data Terminal Equipment (DTE) device and a Data Communications Equipment (DCE) device. RS-232 has a maximum cable length of 50 Ft at 9600 baud. This limitation can be overcome by transmitting serial data over another medium.  RS-232 ports/cables can be found in factory automation and metering, medical equipment, consumer products, and many other devices.

Advantages of RS-232:

  • Simple wiring and connectors
  • Widely available
  • Low cost
  • Most embedded processor include this interface
  • Software to implement a serial port is easy

Disadvantages of RS-232:

  • Incompatibilities in wiring and configuration between devices
  • Short cable lengths
  • Subject to noise interference
  • Low data rates
  • Many different software protocols


RS-422 offers one of the fastest serial data rates at 10Mbps. RS-422 is a multi-drop configuration, allowing for up to 10 unit loads. Its use of voltage differences makes it ideal for noisy environments. RS-422 can support cable lengths of up to 4000 feet, however its data rate lessens as distance increases.

Advantages of RS-422:

  • High data rates
  • Less subject to noise
  • Longer cable lengths

Disadvantages of RS-422:

  • Not as commonly used
  • Unidirectional
  • For most applications, only one transmitter is used


RS-485 provides similar speed advantages as RS-422, allowing for data rates up to 10Mbps. It differs in that it is a multipoint configuration, allowing for support of multiple drivers and multiple receivers. RS-485 can support up to 32 unit loads due to its bi-directional interface.

Advantages of RS-485

  • Low cost
  • Immune to noise
  • Multipoint applications
  • Operates on a single pair of wires

Disadvantages of RS-485

  • Not as commonly used
  • Less standardized connectors and terminology
  • Half-duplex master-slave operation

Grid Connect’s Engineering Staff offers deep technical knowledge in all things serial. In addition to offering a wide selection of Serial Products, we can also provide custom solutions to meet your every need. Visit our Website to find that perfect serial product that meets your needs.

Coming in future posts in this series on serial we will discuss Serial to Ethernet , Other Serial Transport Methods, RTS/CTS, Null Modems, Gender Changers, Loopback and more!

Read More

Subscribe to Email Updates

Lists by Topic

see all