Mitsubishi Electric AJ71QC24 Manual page 87

5. NON PROCEDURE PROTOCOL COMMUNICATION MELSEC QnA
If you have any situations as follows, please read the explanations
After the data was set to the PC CPU, the Re-
quest to Send signal was turned ON and the data
was sent to the external device.
The following was displayed even though the
AJ71 QC24 turned ON the End of Transmission
signal:
Was the sequence program (Section 5.5.1) written
to the PC CPU?
Are the QC24 mode switch (Section 5.2), cable con-
nections (Section 3.3), and other settings correct?
After checking the QC24 LEDs (Section 5.3), check
the settings.
*
Reception from PC in non procedure mode
**
Wait to receive data!
Send data from PC.
The data sent from the PC CPU and the data
received at the external device are not the same.
'*
Reception from PC in non procedure mode
*'
Read data
=
.........
Receive again
PIN)
?
. . . . . . .
,
Are the external device settings (Section 3.4), QC24
switch settings (Section 5.2), and external device pro-
gram (RS-232C setting) settings (Section 5.5.2)
cor-
rect?
After checking the QC24 LEDs (Section 5.3), check
the settings.
After resetting the settings, reset the PC CPU and communicate again.