Mitsubishi Electric MELSEC Q Series Reference Manual page 299

8 TROUBLESHOOTING
Is the
send and receive
data within the system
specifications?
Value of SW0047
Value 3: No host send area
Value 4: Abnormal parameters detected
Value 5: Parameters not received
<Corrective action>
Check the contents of
the common parameters
and station inherent
parameters.
: If SW0047=3, consider the following as a possible cause.
Only the station number has been set in the common parameters and there is no link device assignment.
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C
Yes
No
Value 0:
The host
transmitting
normally
<Corrective action>
Check the contents of each
parameter that has been set
in the refresh parameters
and remote I/O station that
have been set by the CPU
of the remote master station.
Is the send/
receive data according
Yes
to system
specifications?
No
<Corrective action>
Check the contents of each
parameter that has been set
in the refresh parameters
and remote I/O station that
have been set by the CPU
of the remote master station.
MELSEC-Q
Normal communication
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