Pinouts >  RS-232 and other serial ports and interfaces
9 pin D-SUB female connector layout
9 pin D-SUB female connector
electrically isolated RS422 communication interface to the PC serial port
 
25 pin D-SUB male connector layout
25 pin D-SUB male connector
Pinout status: +8 -1
According to 9 reports in our database (8 positive and 1 negative) the RS232 to RS422 cable pinout should be correct.

Is this pinout
NO DIY devices
Source(s) of this and additional information: chaokhun.kmitl.ac.th/~kswichit/
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