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communicate with PLC fx_1n via rs422 (programming port) need some help !!

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tarzan2404

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im trying to connect a fx-1n PLC with hyperterminal using USB-SC09 (rs-232<->rs-422 adaptor). im using computer link with a dedicated protocol (loop back mode). this is my plc program
M8002
--||-------[mov H0 D8121]
|-----[mov K0 D8129]
|-----[mov H6080 D8120]
-----------[end]
so i connect USB cable to PLC and program it. after that i turn the power off and turn on. On hyperterminal i config Br 9600,data bits=7,parity none, stop bit=1 and send a string:
"\ENQ00FFTT204ABCD34[/B]".
I expected to get the loopback data but i just get "\NAK\NAK\NAK\NAK.." maybe 14 NAK without error code. I m give it up today and i need some help from you, guys! pls.
Ps: thanks to every comment.
 

im trying to connect a fx-1n PLC with hyperterminal using USB-SC09 (rs-232<->rs-422 adaptor). im using computer link with a dedicated protocol (loop back mode). this is my plc program
M8002
--||-------[mov H0 D8121]
|-----[mov K0 D8129]
|-----[mov H6080 D8120]
-----------[end]
so i connect USB cable to PLC and program it. after that i turn the power off and turn on. On hyperterminal i config Br 9600,data bits=7,parity none, stop bit=1 and send a string:
"\ENQ00FFTT204ABCD34[/B]".
I expected to get the loopback data but i just get "\NAK\NAK\NAK\NAK.." maybe 14 NAK without error code. I m give it up today and i need some help from you, guys! pls.
Ps: thanks to every comment.

no one can help me ?
 

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