APPX
Appendix 4 List of Link Special Relay (SB)
303
A
SB00A1 Baton pass error status of master
station
Stores the baton pass status of the master station (master operating
station).
Off: Normal
On: Error
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• When 'Baton pass status of own station' (SB0047) is turned on,
data prior to error is held.
SB00AF Baton pass error status of station
No.0
Stores the baton pass status of the station No.0.
Off: Normal
On: Error
(Conditions)
• This relay is enabled when the submaster function is used.
SB00B0 Data link error status of each
station
Stores the data link status of each station.
Off: All stations normal
On: Faulty station exists
When this relay is turned on, the status of each station can be
checked with 'Data link status of each station' (SW00B0 to
SW00B7).
Depending on the link refresh timing, the update of 'Data link status
of each station' (SW00B0 to SW00B7) may be offset by one
sequence scan.
If the master station is powered on before slave stations, data link
may be reconfigured. During the reconfiguration (maximum three
seconds), 'Data link error status of each station' (SB00B0) is turned
on (error). Starting up the master station last can prevent data link
from being reconnected and 'Data link error status of each station'
(SB00B0) from being turned on (error).
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• When 'Baton pass status of own station' (SB0047) is turned on,
data prior to error is held.
• Reserved stations and stations higher than the maximum station
number are ignored.
SB00B1 Data link error status of master
station
Stores the data link status of the master station (master operating
station).
Off: Normal
On: Error
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• When 'Baton pass status of own station' (SB0047) is turned on,
data prior to error is held.
SB00B8 Network connection status of each
station
Stores whether a network connected station exists.
Off: No network connected station
On: Network connected station exists
When this relay is turned on, the status of each station can be
checked with 'Network connection status' (SW00B8 to SW00BF).
Depending on the link refresh timing, the update of 'Network
connection status' (SW00B8 to SW00BF) may be offset by one
sequence scan.
SB00BF Data link error status of station
No.0
Stores the data link status of the station No.0.
Off: Normal
On: Error
(Conditions)
• This relay is enabled when the submaster function is used.
No. Name Description Availability
Master station
(submaster
station)
Local station
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