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Communication problems when using RS-232 with RTS/CTS

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A common problem when using Hardware Flow control with RS-232 readers is with the operation of the RTS/CTS lines. Microscan products use the RS-232C specification for hardware flow control operation to maintain compatibility with most interfacing products. Most computers today have settled on RS-232D or later. The specification for Revision D changed the operation of the RTS/CTS lines, making the two interfaces incompatible. This is why some Terminal or communication programs will not communicate when RTS/CTS is enabled. The attached document explains the operation of RTS/CTS.


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