Mitsubishi Electric MELSEC iQ-R Series User Manual page 195

■If the RJ71GN11-T2 with a firmware version of "03" or earlier is used
If the RJ71GN11-T2 with a firmware version of "03" or earlier is used, also check the following items.
Check item
When "Connection Device
Information" under "Basic
Settings" of the master station is
set to "Mixture of CC-Link IE
TSN Class B/A or CC-Link IE
TSN Class A Only"
Other than the master station, is a dedicated instruction executed for the station
with a communication speed different from the master station?
Are multiple dedicated instructions simultaneously executed for the station with a
communication speed different from the master station?
Are 32 stations or more in total connected?
Are CC-Link IE TSN Class A devices in line
topology?
In line topology plus star topology, are CC-Link
IE TSN Class A devices connected in the
device that is connected to the master station in
line topology?
Is a CC-Link IE TSN Class A device connected
between the master station and CC-Link IE
TSN Class B devices?
Are the master station and CC-Link IE TSN
Class A devices in line topology?
Are CC-Link IE TSN Class A devices
connected to other CC-Link IE TSN Class A
devices?
Are a CC-Link IE TSN Class A device and a
standard Ethernet device in line topology?
Action
Check the connected device and reduce the maximum number of
connectable stations to 31 stations (master station: 1, slave station: 30)
or less.
• Check the connected device and do not connect the CC-Link IE TSN
Class A device in line topology.
• When connecting a CC-Link IE TSN Class B device and a CC-Link IE
TSN Class A device, connect them via a general-purpose hub.
Check the connected device, and, if the master station is connected in
line topology, only connect CC-Link IE TSN Class B devices.
• Check the connected device, and connect the master station and a
CC-Link IE TSN Class B device without a general-purpose hub.
• When connecting CC-Link IE TSN Class A devices, connect them via
a general-purpose hub.
Check the connected devices, and if connecting the master station and a
CC-Link IE TSN Class A device, connect them with a general-purpose
hub.
Check the connected devices, and connect only one CC-Link IE TSN
Class A device to each port of a general-purpose hub.
Check the connected device and do not connect a CC-Link IE TSN
Class A device and a standard Ethernet device.
Execute it on the master station.
Shift the execution timing of the dedicated instructions.
4.4 Troubleshooting by Symptom
4 TROUBLESHOOTING
193
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