Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 475

APPENDICES
No. Name
9
Transient transmission
SW00EE
error
(238)
9
Transient transmission
SW00EF
error pointer
(239)
2
SW00F0
(240) Transient transmission
to error history
SW00FF
(255)
2
Remote sub-master
SW01C4
station switching result
(452)
2
SW01C8 Send LY device number
(456)
2
Receive LX device
SW01C9
number
(457)
2
SW01CC Send LB device number
(460)
2
Receive LB device
SW01CD
number
(461)
2
Send LW device
SW01CE
number
(462)
2
Receive LW device
SW01CF
number
(463)
2: Valid only when the SB0047 is off. When it turns on (error), the last data are retained.
9: To reset the SW00EE to SW00EF, turn on the SB000A.
App - 36
Table 4 Link special register (SW) list (continued)
Description
Accumulates and stores the number of transient transmission
errors.
Other than 0: Number of errors
Turning ON Clear transient transmission errors (SB000A) clears
the stored value.
Stores the pointer that sets the data for the next transient
transmission error.
Turning ON Clear transient transmission errors (SB000A) clears
the stored value.
Stores the error codes of the transient transmission errors (Refer
to the error codes in Section 8.3).
Stores the result of a shift from master operation to sub-master
operation.
0 : Normal completion
1 or later : Abnormal completion (refer to Section 8.3 for
error codes)
(Valid only when SB01C8 is ON)
For remote master station
For remote sub-master station : The send LY device number to
(Valid only when SB01C8 is ON)
For remote master station
For remote sub-master station : The receive LX device number
(Valid only when SB01C8 is ON)
For remote master station
For remote sub-master station : The send LB device number to
(Valid only when SB01C8 is ON)
For remote master station
For remote sub-master station : The receive LB device number
(Valid only when SB01C8 is ON)
For remote master station
For remote sub-master station : The send LW device number to
(Valid only when SB01C8 is ON)
For remote master station
For remote sub-master station : The receive LW device number
: The send LY device number to
the remote sub-master station is
stored. In 1 point units.
the remote master station is
stored. In 1 point units.
: The receive LX device number
from the remote sub-master
station is stored. In 1 point units.
from the remote master station is
stored. In 1 point units.
: The send LB device number to
the remote sub-master station is
stored. In 1 point units.
the remote master station is
stored. In 1 point units.
: The receive LB device number
from the remote sub-master
station is stored. In 1 point units.
from the remote master station is
stored. In 1 point units.
: The send LW device number to
the remote sub-master station is
stored. In 1 point units.
the remote master station is
stored. In 1 point units.
: The receive LW device number
from the remote sub-master
station is stored. In 1 point units.
from the remote master station is
stored. In 1 point units.
[Availability column] Loop: optical loop, Bus: coaxial/twisted bus
MELSEC-Q
Use permitted/prohibited
Remote
Control Normal
master
station station
station
Loop Bus Loop Bus Loop
: Available,
Remote I/O
station
Bus Loop Bus
: Not available
App - 36