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MELSEC-Q
11 TROUBLESHOOTING
11.3.4 Transmission request does not make the "SD" LED blink.
Symptom Cause
Corrective
action
MC
Bidirectional
N
on
pro
ced
ur
e
P
re-d
ef
in
ed
• Although a
transmission request
was made, "SD" does
not blink.
• Due to the OFF status of
the CS(CTS) signal, the Q
series C24 cannot transmit
data to the external
device.
• While the CS(CTS) signal is OFF, the Q series C24
does not transmit data to the external device.
It must be ON when the external device is ready to
receive data.
• Due to transmission
control (DTR or DC
control), the external
device cannot receive
data.
• Wait until the external device is ready to receive data.
• When the waiting time is too long, check the external
device or cable condition.
Содержание GX Configurator-SC
Страница 2: ......
Страница 103: ...3 42 3 42 MELSEC Q 3 SPECIFICATIONS MEMO ...
Страница 138: ...4 35 4 35 MELSEC Q 4 SETTINGS AND PROCEDURES PRIOR TO OPERATION MEMO ...
Страница 397: ...App 24 App 24 MELSEC Q APPENDICES Connection example 3 Connection example 4 ...
Страница 439: ...WARRANTY ...
Страница 441: ......