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RS-422/485 Inline USB Converter - non-isolated, Locked Serial Number (USB cable included)

  • Adds a COM Port to Your PC
  • Locked Serial Number
  • LEDs for Transmit and Receive Data Lines
  • USB 1.0, 1.1 and 2.0 Compatible (12 Mbps)
  • High Retention USB Port
  • Powered by USB Port
  • USB cable included, 0.9 m (3 ft)
Model USPTL4 is a USB to one-port RS-422/485 converter that supports 2-wire RS-485 or 4-wire RS-422/485 communications. It is ideal for applications requiring long-range or multi-drop capabilities. Model USPTL4 uses pluggable terminal blocks on the RS-422/485 side.Two LEDs indicate data transmit or receive. The converter draws power from the USB port so no power supply is required. High retention USB port holds standard USB cables tight. Simply install the drivers supplied on CD ROM and plug the converter into an available USB port on your computer or USB hub. The device show ups as an additional COM port in the Windows Device Manager, and is compatible with Windows applications. USB cable included. Locked Serial Numbers Explained - We configure our single-port USB to serial converters in two ways. In standard format, each product has a unique serial number. "Locked serial" format uses the same serial number that is associated with a model type. If your converter will always be used with the same computer, the standard serialized model is all you need. If the converter is shared among several computers, like field service laptops, the locked serial number model lets you plug and play without having to worry about matching the two. Universal Serial Bus - USB has become the connectivity workhorse of today’s PCs, replacing classic serial ports. But, many commercial and industrial devices still use RS-422/485 interfaces. To connect these devices to modern PCs, you need robust and reliable conversion solutions. USB ports are becoming more common on commercial and industrial equipment such as point-of-sale peripherals, medical devices, scientific instrumentation, laboratory equipment and other devices or in environments where surges, spikes and ground loops are likely to occur. RS-485 Control - No special software is required to control the RS-485 receiver or transmit line driver. The driver is automatically enabled during each byte transmitted in RS-485 mode. The transmitter is always enabled in RS-422 mode. The receiver is tri-stated during each byte transmitted in the echo-off mode. The receiver is always enabled in the echo-on mode. There are 4.7k Ohm pull-up/pull-down resistors on the RDA and RDB lines. A termination resistor may be added to R16 if needed.

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