Mitsubishi Electric MELSEC iQ-R Series User Manual page 148

No. Name
SB0011 Data link operation
designation
SB0018 System switching
monitoring time setting
valid flag
SB0020 Communication status with
CPU module
SB0040 Network type of own
station
SB0041 Redundant function
information of own station
SB0043 Mode of own station
SB0044 Station setting of own
station
SB0046 Data link operation
designation result of own
station
SB0047 Baton pass error status of
own station
SB0048 Station status of own
station
SB0049 Data link error status of
own station
SB004A CPU minor error status of
own station
SB004B CPU moderate to major
error status of own station
SB004C Link start request accept
status of own station
APPX
146
Appendix 3 List of Link Special Relay (SB) Areas
Description
Requests data link operation.
Off: Switch not requested
On: Switch requested (valid at rising edge)
When ON is detected, the operation switches from online (normal data link) operation to
online (debug) operation, or from online (debug) operation to online (normal data link)
operation.
Enables or disables 'System switching monitoring time setting' (SW0018).
Off: Disabled
On: Enabled (valid at rising edge)
Stores the communication status between the RJ71LP21-25 and CPU module.
Off: Normal
On: Error
Stores the network type of the own station.
Off: PLC to PLC network (fixed)
Stores the redundant system support information of the own station.
Off: Redundant function not supported
On: Redundant function supported
(Conditions)
Enabled only when the own station is online.
Stores the module operation mode of the own station.
Off: Online
On: Other than online
Stores the station type of the own station.
Off: Normal station
On: Control station
Stores the data link operation specification status of the network module of the own
station.
Off: Normal data link in operation
On: Operating in debug mode
Stores the baton pass status (transient transmission availability) of the own station.
Off: Normal
On: Error
When this relay is turned on, the cause of the error can be checked with 'Baton pass
status of own station' (SW0047) and 'Cause of baton pass interruption' (SW0048).
Depending on the link refresh timing, the update of 'Baton pass status of own station'
(SW0047) and 'Cause of baton pass interruption' (SW0048) may be offset by one
sequence scan.
Stores the current station type status of the own station.
Off: Normal station
On: Control station (when SB0044 is turned on)/sub-control station (when SB0044 is
turned off)
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
Stores the data link status of the own station.
Off: Normal
On: Error
When this relay is turned on, the cause of the error can be checked with 'Cause of data
link stop' (SW0049).
Depending on the link refresh timing, the update of 'Cause of data link stop' (SW0049)
may be offset by one sequence scan.
Stores the minor error occurrence status of the CPU module on the own station.
Off: No minor error
On: Minor error
Stores the moderate/major error occurrence status of the CPU module on own station.
Off: No moderate/major error
On: Moderate/major error
Stores the acceptance status of 'Link startup of own station' (SB0000).
Off: Not accepted (SB0000 is off.)
On: Accepted (SB0000 is on.)
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Availability
Control Normal
station Station
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