App - 9 App - 9
MELSEC-Q
APPENDIX
Table 1 Special link relay (SB) list (Continued)
Use permitted/prohibited
Control
station
Normal
station
Remote
master
station
Remote I/O
station
No. Name Description
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
3
SB0095
(149)
Reverse loop status
Indicates the status of stations connected to the reverse loop.
Off: All stations normal
On: Faulty stations exist
Turns off when the SW0095 to SW0098 are all "0".
3
SB0096
(150)
Reverse loop status of
the remote master station
Indicate the reverse loop status of the remote master station.
Off: Normal
On: Error
3
SB0099
(153)
Forward loop loopback
Indicates the loopback status of the forward loop while the
system is operating.
Off: Not executed
On: Executing stations exist
(Executing stations are stored in the SW0099)
3
SB009A
(154)
Reverse loop loopback
Indicates the loopback status of the reverse loop while the
system is operating.
Off: Not executed
On: Executing stations exist
(Executing stations are stored in the SW009A)
3
SB009C
(156)
Send transmission path
mismatch status
Indicates the status of the transmission path used for sending by
other stations.
Off: All matched
On: Mismatching stations exist
3
SB00A0
(160)
RECV instruction
execution request flag (1)
Indicates the RECV instruction’s execution request status.
(Channel 1)
Off: No execution request
On: Execution requested
3
SB00A1
(161)
RECV instruction
execution request flag (2)
Indicates the RECV instruction’s execution request status.
(Channel 2)
Off: No execution request
On: Execution requested
3
SB00A2
(162)
RECV instruction
execution request flag (3)
Indicates the RECV instruction’s execution request status.
(Channel 3)
Off: No execution request
On: Execution requested
3
SB00A3
(163)
RECV instruction
execution request flag (4)
Indicates the RECV instruction’s execution request status.
(Channel 4)
Off: No execution request
On: Execution requested
3
SB00A4
(164)
RECV instruction
execution request flag (5)
Indicates the RECV instruction’s execution request status.
(Channel 5)
Off: No execution request
On: Execution requested
3
SB00A5
(165)
RECV instruction
execution request flag (6)
Indicates the RECV instruction’s execution request status.
(Channel 6)
Off: No execution request
On: Execution requested
3
SB00A6
(166)
RECV instruction
execution request flag (7)
Indicates the RECV instruction’s execution request status.
(Channel 7)
Off: No execution request
On: Execution requested
3
SB00A7
(167)
RECV instruction
execution request flag (8)
Indicates the RECV instruction’s execution request status.
(Channel 8)
Off: No execution request
On: Execution requested
SB00A8
(168)
Online test instruction
Indicates the online test instruction status.
Off: Not instructed
On: Instructed
SB00A9
(169)
Online test completion
Indicates the online test completion status.
Off: Not completed
On: Completed
3: Valid only when SB0047 is off. When it turns on (error), the last data are retained.