RS485 to PC Serial Communication FREE cabling and networking Helpdesk
 Question by Jim AUSTIN posted 02 Jun 2004
 RS485 to PC Serial Communication
Would you kindly assist me by providing the pin-out for an RS485 to PC serial interface (using a DB9 connector).
 Answer by Joseph Golan posted 04 Jun 2004
Dear Jim,

There is no "standard" answer for this as the PC serial port is RS-232 which would require more then a direct pin-out conversion. What you need is a converter. I would suggest looking at Black Box see link below and copy to your browser.
Use their search catalog engine with "RS-485 Converter" as the search text. There are a number of choices there and they have on-line tech support. You will most likely also need a serial cable/adapter to change from the 9 pin to a 25 pin serial port.

Joseph Golan, RCDD

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