Mitsubishi Electric MELSEC Q Series Reference Manual page 346

APPENDICES
No. Name
1 3
SB0000 Link startup (host)
(0)
1 3
SB0001 Link stop (host)
(1)
1 3
SB0002 System link startup
(2)
1 3
SB0003 System link stop
(3)
SB0005
Clear retry count
(5)
1
Clear communication
SB0006
error count
(6)
1: Used in the network tests of peripheral devices.
2: SB0000 to SB0003 become valid when only one point turns on.
3: Valid only when SB0047 is off. When it turns on (error), the last data are retained.
App - 4
(3) List of link special relay (SB) areas
The following lists the link special relay (SB) areas (SB0000 to SB01FF).
POINT
(1) Do not turn ON the area which does not exist in the list.
Doing so may cause malfunction of the programmable controller system.
(2) For how to use the link special relay (SB), refer to Section 6.6.
Table 2 Link special relay (SB) list
Description
Restarts the host's cyclic transmission.
Off: Start not instructed
On: Start instructed (valid at rise)
Stops the host's cyclic transmission.
Off: Stop not instructed
On: Stop instructed (valid at rise)
Restarts the cyclic transmission according to the contents of
SW0000 to SW0004.
Off: Start not instructed
On: Start instructed (valid at rise)
Stops the cyclic transmission according to the contents of
SW0000 to SW0004.
Off: Stop not instructed
On: Stop instructed (valid at rise)
Clears the retry count (SW00C8 to SW00C9) to 0.
Off: Clear not instructed
On: Clear instructed (valid when on)
Clears the communication error (SW00B8 to SW00C7) to 0.
Off: Clear not instructed
On: Clear instructed (valid when on)
Control
station
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
2
2
2
2
2
2
[Availability column] Optical: optical loop, Coaxial: coaxial bus
MELSEC-Q
Availability
Remote
Normal Remote I/O
master
station station
station
: Available, : Not available
App - 4