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Mitsubishi PLC FX-3u Programming cable diagram

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engineerpervez1

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I required Mitsubishi PLC FX-3 U programming cable diagram.
I think it uses no components may be simple RS 232 communication.
but still required pin to pin connections.

thanks
 

dv_sa559

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I am not sure but i think connection and circuit is:
sc09.jpg
Melsec FX 8W Mini-DIN: 7:+TXD, 4:-TXD, 2:+RXD, 1:-RXD (TTL levels). Convert to/from RS232 with e.g. MAX202 (Mini-DIN pin 5 has +5V, pin 3 has 0V).

RS232 TXD -> PC serial connector pin 2 (=PC RXD), RS232 RXD -> PC serial connector pin 3 (=PC TXD), PC connector pin 5 = 0V.

Link PC connector pins 7 & 8 (CTS->RTS).
 

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