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What is the difference between RS232 and RS485?

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What is the difference between RS232 and RS485?

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To connect devices with a Serial RS232/RS485 port you need an adapter cable called a USB to RS232 adapter or USB to RS485 adapter, depending on if your device is using the RS232 protocol or the RS485 protocol. ... The major reason for this is that the low-cost adapter is made with a low-cost processor chip.

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