RS232/TTY converter for Siemens S5 PLCs

Hello List,

Thanks all guys here, who asked me for circuit diagram, and about performance details. It was nice chance to correct some small problems with Signal Ground/Earth designation. I corrected SG/Earth designation and have added some comments, hopefully important for all, who are not
circuit designers by nature or profession.

Mike Virgiliev.
mailto:[email protected]
 
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