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USER MANUAL ref 9011509-01
AFO485 and RFO485
3.2. Failsafe ring
One RFO485 unit must be designated as a « ring master » ;This must be
the unit which is connected to the master PLC of the network.
The role of Master PLC can only be given to one PLC.
Any frame is transmitted over the ring in both of the two possible
directions.
RS232
RS485
RS422
Failsafe ring
RS232
RS485
RS422
RS232
RS485
RS422
RS232
RS485
RS422
Master PLC
ringmaster repeater
Slave repeater
Slave PLC
Slave repeater
Slave repeater
Содержание AFO485
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