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4.3 RAS Functions
4.3.6 Detection of duplicated control station or station No.
4
FUNCTIONS
4.3.6
Detection of duplicated control station or station No.
Duplication of the control station or station No. can be detected as a cause of loopback or
disconnection from the network.
The CC IE Control Network Diagnostics makes troubleshooting easy.
Section 10.4 Checking the Error Description with the CC IE Control Network
Diagnostics
When power is applied or when a disconnected station returns to the network, this function
checks whether the control station of the network and station No. are duplicated or not.
The following describes how each station behaves when duplication of the control station
or station No. is detected.
(1) When turning ON all stations simultaneously
(a) When duplication of the control station is detected
Figure 4.54 When duplication of the control station is detected
Table 4.15 When duplication of the control station is detected
Function
Operation
Cyclic transmission
Not performed on all stations.
Transient
transmission
Available for all stations.
No cyclic transmission performed
on all stations
Control station
No.1
Control station
No.2
Normal station
No.3
Normal station
No.4
Control station
duplication
Control station
duplication
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