Mitsubishi Electric MELSEC Q80BD-J71GF11-T2, User Manual

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164
16 TROUBLESHOOTING
16.7 Checking method
Checking network status with CC-Link IE Field Network
diagnostics
Check the network condition on the "CC IE Field Diagnostics" screen.

Page 119 Displaying diagnostics screen
Checking network status with monitoring link special relays (SB)
and link special registers (SW)
Check link special relays (SB) and link special registers (SW) with Device Monitor Utility.
For Device Monitor Utility, refer to the following manual.

MELSEC Data Link Library Reference Manual
For link special relays (SB) and link special registers (SW), refer to the following section.

Page 188 Link Special Relay (SB) List, Page 199 Link Special Register (SW) List
Item Corrective action
Are all installed boards displayed on the "Select Diagnostics Destination"
screen? (

Page 119 Selecting diagnostics target board)
Check the channel numbers. (

Page 160 Checking channel numbers)
Is an error displayed on the network configuration diagram? Check the details of the communication error on the "Selected Station
Communication Status Monitor" screen.
(Perform the troubleshooting described on the "Error details" screen.)
(

Page 127 Selected station communication status monitor)
Are details of the error station selected on the network configuration
diagram displayed on the "Selected Station Communication Status
Monitor" screen? Click the button displayed when an error occurs on the "Selected Station
Communication Status Monitor" screen and perform the troubleshooting described
on the "Error details" screen. (

Page 127 Selected station communication status
monitor)
The following are the causes for when details of the error station are not displayed.
• Master station duplication
• Station number duplication
• Slave station type error
Check the "Board Diagnostics" screen and identify the cause of the error.
(
 Page 117 Diagnosing Board)
If the error station is a module, identify the cause of the error with System Monitor of
GX Works2.
Is there any error log on the "Network Event History" screen?
(
 Page 132 Network event history)
Check the detailed information and identify the cause of the error.
Item Corrective action
Is SB0047 (Baton pass status (own station)) faulty (ON)? Perform the troubleshooting for when the transient transmission cannot be
performed at own station. (

Page 155 Transient transmission cannot be
performed)
Is SW00A0 to SW00A7 (Baton pass status (each station)) faulty (ON)? Perform the troubleshooting for when the transient transmission cannot be
performed at station in which baton pass error has occurred. (

Page 155
Transient transmission cannot be performed)
Is SB0049 (Data link status (own station)) faulty (ON)? Perform the troubleshooting for when the cyclic transmission cannot be performed
at own station. (
 Page 154 Cyclic transmission cannot be performed)
Is there a cyclic transmission error station in SW00B0 to SW00B7 (Data
link status (each station))? Perform the troubleshooting for when the cyclic transmission cannot be performed
at station in which data link error has occurred. (
 Page 154 Cyclic transmission
cannot be performed)
Is SB004A/SB004B (Own station's CPU status (1)/Own station's CPU
status (2)) faulty (ON)? Check the Windows event viewer. (

Page 159 Checking operations with event
viewer)
Is there an error station in SW0100 to SW0107/SW0110 to SW0117
(Operation status (each station) (1)(2))? Refer to the CPU module manual regarding the CPU of the station in which a CPU
Stop error/Continuation error has occurred, perform the troubleshooting of the CPU
module.