List Of Problems; When Disconnecting A Slave Station - Mitsubishi LJ61BT11 User Manual

15.2 List of Problems

15.2.1 When disconnecting a slave station

Description of problem
A1-2
A1-3
A1-4
Unable to link the
entire system.
A1-5
A1-6
15 - 9
(1) Problems on slave station disconnection (when creating a new CC-
Link system or modifying the existing system)
Check item
Is the setting within the
transmission speed setting
range?
Transmission speed
Do the settings of the master
station and slave stations differ
from each other?
Is the master station in other than
Mode
online mode?
• Are the network parameters
(such as unit number or
station information) correct?
• Is some error occurring at the
master station?
Parameter setting
• Network parameter of the GX
Works2
Is not the setting wrong?
(Automatic CC-Link startup)
Is there any disconnection, short-
circuit, incorrect wiring, faulty
connection, or status out of
specifications (transmission
distance, distance between
Cables stations, transmission cable,
coexistence of different cables or
FG connection)?
Are the terminating resistors
connected?
Is the programmable controller
CPU in the RESET status? (when
setting the network parameter)
Link start
Does CC-Link startup
automatically?
Check contents
Check the setting of the
transmission speed for each
station.
Check the mode setting of the
master station.
Check the contents of the
network parameters for the
programmable controller CPU of
the master station.
Check the station number
(SW0061), transmission speed
(SW005B) and mode (SW0060)
settings.
Check SW0068, SW0069,
SW0070, SW0071, SW0072,
SW0074 to SW0077, SW0098 to
SW009B, SW009C to SW009F
and SW0144 to SW0147.
Check if any value is set to the
intelligent function module switch
setting.
Check if the cable between the
master station and slave station is
not disconnected.
Check if the terminating resistors
are connected to the both
terminals of the CC-Link system.
Check if the RESET switch of the
programmable controller CPU is
not at the RESET position.
Check if any value is set to the
intelligent function module switch
setting.
15 TROUBLESHOOTING
Check procedure
Set the transmission speed
properly.
Set the online mode.
Set the network parameter
properly.
Execute the memory format of
the programmable controller CPU
and then write the network
parameter.
Disable the intelligent function
module switch settings in GX
Works2.
Connect the cable properly.
Connect the terminating resistors
to the both terminals of the CC-
Link system.
Set the RESET switch to the
center position.
Disable the intelligent function
module switch settings in GX
Works2.
Corrective action
(To the next page)
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