Filter
Top Products
8 - 8 8 - 8
MELSEC-Q
8 TROUBLESHOOTING
2) Data-Link status of each station (SW0074 to SW0077)
The cyclic transmission status is displayed.
• Light blue : Normal station or reserved station
• Red : Error station (data link not being performed)
3) Parameter status of each station
The parameter communication status of each station is displayed (SW0078
to SW007B).
• Light blue : Parameters not being transferred, reserved station,
or unconnected station
• Red : Parameters being transferred
The parameter error status of each station is displayed (SW007C to
SW007F).
• Light blue : Parameters correctly set, reserved station, or
unconnected station
• Red : Parameter error
4) CPU operation status of each station (SW0080 to SW0083, SW0088 to
SW008B)
The operation status of the remote I/O module is displayed.
The status is displayed for stations whose communication status is normal.
• Light blue : Normal operation, reserved station, or unconnected
station
• Yellow : Minor error
• Red : Moderate error (such as watchdog timer error),
Major error (such as hardware error)
5) Loop status of each station (SW0091 to SW0094, SW0095 to SW0098)
For the optical loop system, the forward/reverse loop status is displayed.
• Light blue : Normal loop operation, reserved station, or
unconnected station
• Red : Error
6) Reserved station designation each station (SW0064 to SW0067)
The reserved station setting status is displayed.
• Light blue : Connected station
• Red : Reserved station
7) PSU operation status of each station extension (SW008C to SW008F)
The status of the 24VDC external power supply built in the network module
is displayed.
The status is displayed for stations whose communication status is normal.
• Green : Power (24 V DC) not being supplied or network
module without supply terminal
• White : Power (24 V DC) being supplied