Mitsubishi Electric MELSEC iQ-R Series User Manual page 57

Devices connected to the same network
Do not connect the devices as described below. Doing so may cause the disconnection of all stations.
• A module on CC-Link IE TSN and a device having different network types (such as CC-Link IE Controller Network or CC-
Link IE Field Network) other than an Ethernet device are connected to the same network.
• A module on CC-Link IE TSN and an Ethernet device such as a personal computer, both of which are on different networks,
are connected to one switching hub.
Adding a slave station with no IP address setting
In a line topology, do not connect the slave station with no IP address setting at a place other than the end of the network. A
data link may not be performed in the slave stations after the slave station with no IP address setting.
CC-Link IE TSN/CC-Link IE Field diagnostics
If the following operations are performed, the actual network configuration and the network map of the CC-Link IE TSN/CC-
Link IE Field diagnostics may be a mismatch.
Network Operation
configuration
Star topology • Powering off and on a slave station or switching hub
• Connecting/disconnecting an Ethernet cable connected to the switching hub
• Disconnecting an Ethernet cable from a slave station and connecting it to another slave station or a switching hub
• Disconnecting more than nine stations, or half the number of slave stations or more in the system
• Changing the network topology when adding a slave station
Line topology • Simultaneously powering off or on multiple stations
• Simultaneously connecting/disconnecting Ethernet cables to/from multiple stations (When a data link faulty station returns, a data
link error will occur in all the stations.)
• Disconnecting more than nine stations, or half the number of slave stations or more in the system
• Changing the network topology when adding a slave station
The actual network configuration and network map can be matched by executing the network map update of
the CC-Link IE TSN/CC-Link IE Field diagnostics. ( MELSEC iQ-R CC-Link IE TSN User's Manual
(Application))
Calculation of the total cyclic data size
The following shows the calculation formula of the total cyclic data size. The part of the variable surrounded by double quotes
(" ") is the setting value of "Network Configuration Settings" under "Basic Settings".
Total cyclic data size = 256 + (146  Number of local stations) + (106  Number of remote stations) + (Number of "RX setting"
points  8) + (Number of "RWr setting" points  2) + (Number of "LB setting" points  8) + (Number of "LW setting" points  2)
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5 SYSTEM CONFIGURATION
5.5 Precautions for System Configuration
5
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