Mitsubishi Electric QJ71LP21 Reference Manual page 309

APPENDIX
No. Name
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)
3
Cyclic transmission start
SB004D
completion status
(77)
3
Cyclic transmission stop
SB004E
acknowledgment status
(78)
3
Cyclic transmission stop
SB004F
completion status
(79)
3
Cyclic transmission start
SB0050
acknowledgment status
(80)
3: Valid only when SB0047 is off. When it turns on (error), the last data are retained.
4: Minor errors (battery error, etc.) are the type of errors that do not affect the CPU operation.
5: Serious errors (WDT error, etc.) are the type of errors that stop the CPU operation.
Fatal errors (RAM error, etc.) are also the type of errors that stop the CPU operation (error code 11
App - 5
Table 1 Special link relay (SB) list (Continued)
Description
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 PLC to PLC network
Indicates the host's status. (Valid when the SB0047 is off.)
Off: Normal station
On: Control station (SB0044 is on)
Sub-control station (SB0044 is off)
When remote I/O network
Indicate the host status (Enabled when SB0047 is off.)
Off: Remote I/O station
On: Remote master station
Indicates the host's data link operation status.
Off: Normal
On: Abnormal (Set after refreshing completes.)
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)
Indicates the stop acknowledgment status of the cyclic
transmission.
Off: Not acknowledged (SB0001 is off)
On: Stop acknowledged (SB0001 is on)
Indicates the stop completion status of the cyclic transmission.
Off: Not completed (SB0001 is off)
On: Stop completed (SB0001 is on)
Indicates the startup acknowledgment status of the cyclic
transmission.
Off: Not acknowledged (SB0002 is off)
On: Start acknowledged (SB0002 is on)
MELSEC-Q
Use permitted/prohibited
Remote
Control Normal
master
station station
station
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
).
Remote I/O
station
App - 5