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(5) Replacing CC-Link IE Field Network devices without stopping the system
For star topology, slave stations can be replaced without powering off the whole system.
(6) RAS function when a communication error occurs
(a) During safety communication
When a communication error occurs between safety stations, communication is automatically disconnected in
order to prevent incorrect input/output from/to the faulty station. ( Page 100, Section 8.1.3)
Replacement
Star topology
Master station
(safety station)
Station No. 0
Local station
(standard station)
Station No. 1
Local station
(safety station)
Station No. 3
Local station
(standard station)
Station No. 2
Error
Master station
(safety station)
Station No. 0
Local station
(standard station)
Station No. 1
Local station
(safety station)
Station No. 3
Local station
(standard station)
Station No. 2
Communication
disconnection
and interlock
Safety
communication