FX2N-16CCL-M CC-Link System Master Block
Functions 5
5-20
5.11
RAS Function
The term "RAS" stands for "reliability, availability and serviceability", and refers to the total
operability of an automated facility.
5.11.1
Automatic return function
This function allows a module which was disconnected from the data link by power OFF, etc. to
automatically join the data link again when it recovers the normal status.
Set the automatic return function using the mode setting switch.
5.11.2
Slave station cutoff function
This function cuts off only remote stations in which data link is disabled by power OFF, etc.,
and continues the data link using only normal remote stations.
Table 5.2:
Mode setting switch
Setting description
Remarks
0
Online (automatic return allowed)
⎯
1
Unusable
⎯
2
Offline
Data link disabled (disconnected status)
Point
When a cable is broken, the data link is disabled in the entire system because
terminal resistors do not function any more.
Master
station
Remote I/O
station
Remote I/O
station
Down
Remote
device
station
Remote
device
station
Terminal resistor
Terminal resistor
Continues data link excluding the down station.
Master
station
Remote I/O
station
Remote I/O
station
Down
Remote
device
station
Remote
device
station
Terminal resistor
Terminal resistor
Wire breakage
Содержание FX2N-16CCL-M
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