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MELSEC-Q
8 TROUBLESHOOTING
10) Reason for Transmission Stop (SW0049)
The cause of the data link (cyclic transmission) failure of the host station is
displayed.
Item Description
Normal Communications being executed normally
There is a stop instruction (All)
Cyclic transmission to all stations is stopped
from the host or other stations.
There is a stop instruction (Host)
Cyclic transmission of the host station is
stopped.
Stop instruction present ( )
Cyclic transmission of the host station is
stopped from another station (station No.
).
No Parameter No parameter can be received.
Illegal Parameter Set parameters are not correct.
Host PLC Error
A moderate or major error has occurred in the
CPU module on the host station.
Suspend Communication
Data link error has occurred on the host
station.
[Status of Self Station]
11) Inteli-Parameter Setting (SW0054)
The status of the intelligent function module parameters written to the remote
I/O station is displayed.
• Available
• None
12) Reserved Station Setting (SB0064)
The specification status of the reserved station is displayed.
• Exists
• Does not exist
13) Transmission Mode (SB0068)
The status of the link scan is displayed.
• Normal
• Constant link scan
14) Duplex Transmission Setting (SB0069)
The specification status of the multiplex transmission is displayed.
• None
• Multiplex transmission
"----" is displayed for the bus type system.
15) Duplex Transmission Status (SB006A)
The status of the multiplex transmission is displayed.
• Normal
• Multiplex transmission
"----" is displayed for the bus type system.