Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 449

APPENDICES
No. Name
SB0043 Online switch
(67) (host)
SB0044 Station setting
(68) (host)
SB0045 Setting information
(69) (host)
Data link operation
SB0046
designation result
(70)
(host)
SB0047 Baton pass status
(71) (host)
Control station status
(host)
3
SB0048
(72)
Remote master station
status (host)
SB0049
Host data link status
(73)
4
SB004A Host CPU status (1)
(74)
5
SB004B Host CPU status (2)
(75)
3 Cyclic transmission start
SB004C acknowledgment status
(76) (host)
3 Cyclic transmission start
SB004D completion status
(77) (host)
3: Valid only when the SB0047 is off. When it turns on (error), the last data are retained.
4: Minor errors are the type of errors that do not affect the CPU operation.
5: Serious errors are the type of errors that stop the CPU operation.
Fatal errors are also the type of errors that stop the CPU operation.
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Table 3 Link special relay (SB) list (continued)
Description
Indicates the mode set by the switch of the host's network
module.
Off: Online "Parameter setting mode becomes valid"
On: Other than online
When PLC to PLC network
Indicates the station type set with the parameter of the host's
network module.
Off: Normal station
On: Control station
When remote I/O network
Indicates the station type set with the parameter of the host's
network module.
Off: Remote I/O station or multiplexed remote sub-master
station
On: Remote master station or multiplexed remote master
station
Indicates the switch setting information (including parameter
settings) of the host's network module.
Off: Normal
On: Abnormal setting
Indicates the switch setting information (including parameter
settings) of the host's network module.
Off: Normal data linking
On: Operating in debug mode
Indicates the host's baton pass status (transient transmission
enabled).
Off: Normal
On: Abnormal
When an error is identified, the cause of the error can be
checked in Baton pass status (host) (SW0047) and Cause of
baton pass interruption (SW0048).
When PLC to PLC network
Indicates the host's status.
Off: Normal station
On: Control station (SB0044 is on)
Sub-control station (SB0044 is off)
When remote I/O network
Indicate the host status
Off: Remote I/O station
On: SB0044=On Remote master station or multiplexed
remote master station
SB0044=Off Remote I/O station or multiplexed
remote sub-master station
Indicates the host's data link operation status.
Off: Normal
On: Abnormal
When an error is identified, the cause of the error can be
checked in Cause of data link stop (SW0049).
Indicates the host's CPU status.
Off: Normal
On: Minor error occurred
Indicates the host's CPU status.
Off: Normal
On: A serious or fatal error occurred
Indicates the startup acknowledgment status of the cyclic
transmission.
Off: Not acknowledged (SB0000 is off)
On: Start acknowledged (SB0000 is on)
Indicates the completion status of the cyclic transmission.
Off: Not completed (SB0000 is off)
On: Start completed (SB0000 is on)
Use permitted/prohibited
Control Normal
station station
Loop Bus Loop Bus
[Availability column] Loop: optical loop, Bus: coaxial/twisted bus
MELSEC-Q
Remote
Remote I/O
master
station
station
Loop Bus Loop Bus
: Available, : Not available
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