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3. PROCEDURE UP TO DATA COMMUNICATIONS DESCRIBED IN
THIS GUIDEBOOK MELSEC
QnA
If you have any situations as follows, please read the explanations
\
Cannot communicate
Are the hardware settings (Section 3.1.2) and cable
connections (Section 3.3) correct ?
Check the QC24 LEDs (Section 4.3), then check the
settings.
The data sent from the computer and the Are the transmission specifications settings (Section
3.
data send from the QC24 are
not
the
1,2), cable connections (Section 3.3), and external de-
same.
vice settings (Section 3.4) correct ?
Check the QC24 LEDs (section 4.3), then check the
settings.
After resetting the settings, reset the PC CPU and repeat the loopback test.
3 - 1 2
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