APPENDICES
Appendix 1 Link Special Relay (SB) List
App
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SB0042
Power supply status of
host
Stores the external power supply status of the CC-Link IE controller network
module of the own station.
OFF: External power not supplied (EXT.PW LED is OFF.)
ON: External power supplied (EXT.PW LED is ON.)
This relay is always OFF when the CC-Link IE controller network module does
not have the external power supply function.
SB0043
Online switch
(own station)
Stores the mode of own station.
(
OFF: Online
ON: Other than online
SB0044
Station setting
(own station)
Stores the network type that is set by parameters of own station.
OFF: Normal station
ON: Control station
SB0047
Baton pass status
(own station)
Stores the baton pass status (transient transmission availability) of the own
station.
OFF: Normal
ON: Error
When an error is identified, the cause of the error can be checked in Baton
pass status (own station) (SW0047) and Cause of baton pass interruption
(SW0048).
SB0048
Control station status
(own station)
Stores network type (current status) of own station.
OFF: Normal station
ON: Control station (when SB0044 is turned ON)
Sub-control station (when SB0044 is turned OFF)
(Condition)
• Valid when Baton pass status (own station) (SB0047) is OFF.
When Baton pass status (own station) (SB0047) is turned ON (error), data
prior to error is held.
SB0049
Data link status of own
station
Stores the data link status of own station.
OFF: Normal
ON: Error
When an error is identified, the cause of the error can be checked in Cause of
data link stop (SW0049).
SB004A
Own station's CPU
status (1)
Stores the continuation error status of the CPU module of the own station.
OFF: Normal
ON: Continuation error
SB004B
Own station's CPU
status (2)
Stores the stop error status of the CPU module of the own station.
OFF: Normal
ON: Stop error
SB004C
Cyclic transmission
start accept status (own
station)
Turned ON when startup request for cyclic transmission due to Link startup
(own station) (SB0000) is received.
OFF: Not received (SB0000 is OFF)
ON: Startup received (SB0000 is ON)
(Condition)
• Valid when Baton pass status (own station) (SB0047) is OFF.
When Baton pass status (own station) (SB0047) is turned ON (error), data
prior to error is held.
Table App.2 Link special relay (SB) list (Continued)
No.
Name
Description
Availability
Control
station
Normal
station
Link special relay (SB): SB0042 to SB004C
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