Mitsubishi Electric QJ71LP21 Reference Manual page 321

APPENDIX
No. Name
2
SW006B Maximum link scan time
(107)
2
SW006C Minimum link scan time
(108)
2
SW006D Current link scan time
(109)
2
Low-speed cyclic scan
SW006E
time
(110)
2
SW0070
(112)/
SW0071
Baton pass status of each
(113)/
station
SW0072
(114)/
SW0073
(115)
2: Valid only when SB0047 is off. When it turns on (error), the last data are retained.
App - 17
Table 2 Link special register (SW) list (Continued)
Description
Stores the maximum/minimum/current values of the link scan
time (unit (ms)).
The values for the control station and normal stations vary.
(PLC to PLC network)
0
Sequence scan
Link scan
Control station/
normal station
When the constant scan is set, the values are as follows:
Control station
Measured link scan value + KB of the link scan
(Setting value) <
time equation
Measured link scan value + KB of the link scan time equation
Measured link scan value + KB of the link scan
(Setting value) <
time equation
Measured link scan value
Normal station Constant link scan that has been set
(Remote I/O network)
Sequence scan 0
Link scan
Remote master station
Remote I/O station
Stores the number of link scans in the send interval of the low-
speed cyclic transmission.
Low-speed cyclic
send request
1 2 3 4
Link scan
Low-speed cyclic
Send interval
transmission
Stores the baton pass status of each station (Including the host).
<Online>
0: Normal (including the stations with the maximum station
number and smaller numbers as well as reserved stations)
1: Abnormal
<Offline test>
0: Normal
1: Abnormal (including the stations with the maximum station
number and smaller numbers as well as reserved stations)
b15 b14 b1 3 b12
SW0070 16 15 14 13
SW0071 32 31 30 29
48 47 46 45
SW0072
SW0073 64 63 62 61
END 0 END
END 0 END
5 6 2 3 4
1
to b4 b3 b2 b1 b0
to 5 3
4 2 1
to 21 20 19 18 17
to 37 36 35 34 33
to
53 52 51 50 49
Numbers 1 to 64 in the above table
indicate the station numbers.
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 - 17