Pinouts >  RS-232 and other serial ports and interfaces
9 pin D-SUB female connector layout
9 pin D-SUB female connector
electrically isolated RS485 communication interface to the PC serial port

EIA-485 cable usually made with twisted pair (like EIA-422) and may span up to 1200 metres. The recommended arrangement of the wires is as a connected series of point-to-point nodes, a line or bus. Ideally, the two ends of the cable will have a termination resistor connected across the two wires and two powered resistors to bias the lines apart when the lines are not being driven. The value of each termination resistor should be equal to the cable impedance (typically, 120 ohms for twisted pairs).

 
Pinout status: +12 -2
According to 14 reports in our database (12 positive and 2 negative) the RS232 to RS485 cable pinout should be correct.

Is this pinout
NO DIY devices
Source(s) of this and additional information: chaokhun.kmitl.ac.th/~kswichit/, wikipedia.org
Copyright © 2000-2024 by pinouts.ru team, except user uploaded images.
No portion of this webpage may be reproduced in any form without visible link to pinouts.ru .
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.
Change privacy settings