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APPX
Appendix 4 List of Link Special Relay (SB)
295
A
SB0003
System link stop
Stops data link (cyclic transmission) of the entire system. The
station where cyclic transmission is stopped is specified in 'Link
startup/stop direction' (SW0000) and 'Link startup/stop station
specification' (SW0001 to SW0008).
Off: Stop not requested
On: Stop requested (valid at rising edge)
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• For SB0000 to SB0003, only one of the areas can be turned on.
(Master
operating station
only)
SB0006
Clear communication error count
Clears the link special register areas related to communication
errors (SW0068 to SW006B, SW0074 to SW0077, SW007C to
SW007F, SW0120 to SW015F) to 0.
Off: Clear not requested
On: Clear requested (valid while on)
SB000F
Error clear
Clears the error for the slave station.
Off: No request
On: Request issued
(Conditions)
This relay is enabled only for slave stations supporting 'Error clear'
(SB000F).
(Master
operating station
only)
SB0010
Temporary error invalid station
setting request
Sets the station specified in 'Reserved station function disable/
temporary error invalid station setting' (SW0010 to SW0017) as a
temporary error invalid station.
Off: No request
On: Request issued
(When this relay is turned off, the error definition stored in
'Temporary error invalid station setting result' (SW0054) is cleared.)
(Master
operating station
only)
SB0011
Temporary error invalid station
setting cancel request
Cancels the temporary error invalid station setting for the station
specified in 'Reserved station function disable/temporary error
invalid station setting' (SW0010 to SW0017).
Off: No request
On: Request issued
(When this relay is turned off, the error definition stored in
'Temporary error invalid station setting cancel result' (SW0055) is
cleared.)
(Master
operating station
only)
SB0012
Reserved station function disable
request
Temporarily cancels the reserved station specification for the station
specified in 'Reserved station function disable/temporary error
invalid station setting' (SW0010 to SW0017).
Off: No request
On: Request issued
(When this relay is turned off, the error definition stored in 'Result of
reserved station function disable request' (SW0056) is cleared.)
(Master
operating station
only)
SB0013
Reserved station specification
enable request
Enables the reserved station specification for the station specified in
'Reserved station function disable/temporary error invalid station
setting' (SW0010 to SW0017). (This can only be requested for the
stations whose reserved station setting is temporarily canceled)
Off: No request
On: Request issued
(When this relay is turned off, the error definition stored in 'Result of
reserved station function enable request' (SW0057) is cleared.)
(Master
operating station
only)
SB0019
Forced master switching command
Switches the operation of the master station to master operation
when submaster station is operating as a master.
Off: Switch not requested
On: Switch requested (valid at rising edge)
(Conditions)
• This relay is enabled only when the submaster station is
operating as a master.
• This relay disabled in the case of the redundant system.
(Only for the
submaster
station operating
as a master)
No.
Name
Description
Availability
Master station
(submaster
station)
Local station
Summary of Contents for MELSEC iQ-R04ENCPU
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