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CHAPTER 5 SYSTEM CONFIGURATION
5
5.1 CC-Link IE Field Network Configuration
5.1.1 Single network system
(f) Connecting/disconnecting a cable and powering off/on a device
When the operations listed below are performed, all stations on the network may be reconnected.
At that time, a data link error or a baton pass error may momentarily occur in all the stations, and outputs of the
connected slave stations may turn off.
To hold the outputs as a measure when a data link error occurs, configure the following settings:
• Master/local module
Set input data to be used from the faulty station.
Project data list [Parameter] [Network param] [Ethernet/CC IE/MELSECNET]
button
Note that data input by safety communication is cleared even if the above setting is configured.
Network configuration Operation
Star topology
• Powering a slave station or switching hub off and on
• 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 the 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, ring topology
• Simultaneously powering off/on systems 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
Insertion/removal
or power-off/power-on
Momentary
error in all
the stations