ecm-1240 command issue with Labview

[DiegoBonilla]

Hi, can you help me?. I can not communicate with my ecm-1240 energy meter through rs232, I send the following, and ecm 1240 have to answer but Visa doesnt show any response.

PC sends FC (hex)
ECM-1240 responds with FC (hex)
PC sends three ASCII bytes “S” “E” “T” (must be upper case characters)

ECM-1240 responds with FC (hex)

Thanks a lot

[Dennis_Knutson]

You aren't sending hex. You are sending the ASCII characters 'F' and 'C'. Just right click on the string constant and select Hex Display. Wire that directly to the VISA Write.

[DiegoBonilla]

Thanks, but still no working i canot receive anything

[Dennis_Knutson]

And what if you type in FC into the constant? It's unclear what the value is supposed to be. You have the hex values of the ASCII characters F and C, not 0xFC.

[Hatef.fouladi]

Before start to use labview for hardware communication first test your connection and comment by some software like hyper terminal
and if you find any thing is ok start to use labview visa

[Dennis_Knutson]

Since hyperterminal no longer ships with Windows, you'll need to use something else unless you want to pay for it. Try putty or versaterm. Hyperterminal was a poor choice for hex anyway.

[Hatef.fouladi]

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@Dennis_Knutson wrote:
Since hyperterminal no longer ships with Windows, you'll need to use something else unless you want to pay for it. Try putty or versaterm. Hyperterminal was a poor choice for hex anyway.

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yes for hex it is better to use software like x-ctu

also i have hyper for win7 Dennis 

I try to send it here 
both  x-ctu and hyper but 
I couldn't (some error happened?
I can mail you if you want 

[DiegoBonilla]

OK,  im getting better. Now i can send FC in hex but still cant send 3 ascii bytes. can you please look at the picture to help me