Appendix 4.3 Link Special Relays (Sb) And Link Special Registers (Sw) - Mitsubishi Electric MELSEC Q Series Reference Manual

Appendix 4.3
This section compares link special relays (SB) and link special registers (SW) between CC-Link IE Controller Network
and MELSECNET/H.
Some link special relays (SB) and link special registers (SW) have been changed for the CC-Link IE Controller
Network.
Verify the link special relays (SB) and link special registers (SW). (
(1) Comparison of link special relay (SB)
Change the link special relay (SB) in a sequence program referring to the following chart.
In addition, the link special relay (SB) shown below is a list for a case when an assignment range is SB0000 to
SB01FF.
(a) Comparison with the MELSECNET/H module
MELSECNET/H
No. Name
SB0000 Link startup (host)
SB0001 Link stop (host)
SB0002 System link startup
SB0003 System link stop
SB0005 Clear retry count
Clear communication error
SB0006
count
Clear forward loop
SB0007
transmission errors
Clear reverse loop
SB0008
transmission errors
SB0009 Clear loop switching counter
Clear transient transmission
SB000A
error counter
Transient transmission error
SB000B
area setting
Data link operation
SB0011
designation
SB000F Minor error clear
Remote sub-master station
SB0014
switching command
System switching monitoring
SB0018
time setting valid flag
SB0020 Module status
SB0040 Network type (host)
Host station's redundant
SB0041
function support information
SB0042 Power supply status of host
Link special relays (SB) and link special registers
(SW)
CC-Link IE Controller Network
No. Name
SB0000 Link startup (own station)
SB0001 Link stop (own station)
SB0002 System link startup
SB0003 System link stop
— —
Clear communication error
SB0006
count
Clear IN-side transmission
SB0007
error counter
Clear OUT-side
SB0008
transmission error counter
SB0009 Clear loop switching counter
Clear transient transmission
SB000A
error counter
— —
— —
— —
— —
— —
SB0020 Module status
SB0040 Network type (own station)
Host station's redundant
SB0041
function support information
SB0042 Power supply status of host
Page 639, Appendix 4.5)
: compatible, : partially changed, —: incompatible
Precautions for
Compatibility
replacement
Delete the sequence
— program for the
corresponding part.
The area for clear target is
different in the CC-Link IE
(Content
Controller Network module.
changed)
Delete the sequence
— program for the
corresponding part.
APPENDICES
A
None
None
None
None
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