The ATC-840 module is a cost-effective way to convert RS422 industrial buses to a USB interface. When connected to a PC USB port the ATC-840 module is automatically detected and is installed as a native COM port which is compatible with any existing serial communication application. Muliple modules can be installed when using USB hubs thus allowing a hassle-free configuration of a multi serial system without any IRQ or DMA configuration.
They have 600W protect between the USB port and RS422 protects the PC from spykes or possible misconnections in the communication bus.
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