from the Automation List department...
RS232/TTY converter for Siemens S5 PLCs
PLCs and related questions. topic
Posted by tecnog on 4 November, 2002 - 4:29 pm
Hello all,

As agreed with the author, Mike Virgiliev's RS232-TTY converter schematics is now available for download at "":http://www.

best regards
Luca Gallina

Posted by Mike on 6 November, 2002 - 10:02 am
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.

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