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MELSEC-Q
APPENDICES
Table 3 Link special register (SW) list (Continued)
No. Name Description
Availability
Control
station
Normal
station
Remote
master
station
Remote I/O
station
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
SW0055
(85)
Parameter setting status
At the PLC to PLC network.
Stores the status of the parameters.
0 : Normal parameter
1 or more : Abnormal parameter (refer to the error codes in
Section 8.3)
2
SW0056
(86)
Current control station
At the PLC to PLC network.
Stores the number of the station that actually operates as the
control station (including a sub-control station).
Range: 1 to 64
Current remote master
station
When remote I/O network
Stores the station number controlling the current baton pass.
7DH
: Remote master station or multiplexed
remote master station
1 to 64 : Multiplexed remote sub-master station
SW0057
(87)
Designated control station
At the PLC to PLC network.
Stores the number of the station that is set as the control station.
Range: 1 to 64 0: Designated control station error
Designated remote
master station
When remote I/O network.
7DH : Remote master station
Other than 7DH : Remote master station error.
SW0059
(89)
Total number of link
stations
Stores the total number of link stations that is set with the
parameters.
Range: 1 to 64 (64 when there is no parameter.)
2
SW005A
(90)
Maximum baton pass
station
Stores the maximum station number among the stations
executing the baton pass.
Range: 1 to 64
2
SW005B
(91)
Maximum cyclic
transmission station
Stores the maximum station number among the stations
executing the cyclic transmission.
Range: 1 to 64
SW005C
(92)
I/O master station
(block 1)
Stores the station number of the I/O master station of block 1
with PLC to PLC network.
0 : None
1 to 64 : Station number
Valid when the SB0049 is off.
SW005D
(93)
I/O master station
(block 2)
Stores the station number of the I/O master station of block 2
with PLC to PLC network.
0 : None
1 to 64 : Station number
Valid when the SB0049 is off.
SW0064
(100)/
SW0065
(101)/
SW0066
(102)/
SW0067
(103)
Reserved station
designation
Stores the stations that are set as reserved stations.
0: Other than reserved station
1: Reserved station
Valid when the SB0049 is off.
16
32
48
64
15 14 13 5 4 3 2 1
31 30
47 46
63 62
29
45
61
21 20 19 18 17
37 36 35
34
33
53 52 51 50 49
to
to
to
to
b15 b14 b13 b12 b4 b3 b2 b1 b0
SW0064
SW0065
SW0066
SW0067
Numbers 1 to 64 in the above table
indicate the station numbers.
to
SW0068
(104)
Communication mode
Stores the status of the constant link scan settings.
0 : No storage
1 to 500 : Setting time (ms)
Valid when the SB0049 is off.
2: Valid only when SB0047 is off. When it turns on (error), the last data are retained.