11 - 2 11 - 2
MELSEC
11 PROGRAMMING
Assignment of link special relays (SB) and link special registers (SW) when multiple
boards are installed
Device status
Device Name
Description
Off (0)
On (1)
SB20 Module
status
Indicates the communication status between
MELSECNET/H board and personal computer.
Normal Abnormal
SB47
Baton pass status of
host
Indicates the baton pass status of the host.
It is in a status that the cyclic transmission and
transient transmission can be performed when it is
normal.
Normal
(Data link enabled)
Abnormal
(Host disconnected)
SB49
Data link status of
host
Indicates the data link status (cyclic transmission
status) of the host.
Data link being executed
(Executing cyclic
transmission)
Data link being stopped
(Set after refresh
completion)
SB70
Baton pass status of
each station
Indicates the baton pass status of each station
(including the host).
Reserved stations and stations having numbers
higher than the maximum station number are not
included.
This device turns off when SW70 to 73 are all "0".
All stations normal
One or more stations are
abnormal
SB74
Data link status of
each station
Indicates the data link (cyclic transmission) status of
each station (including the host).
Reserved stations and stations having numbers
higher than the maximum stations number are not
included.
This device turns off when SW74 to 77 are all "0".
All stations executing
data link
(All stations executing
cyclic transmission)
One or more stations are
not executing data link
Stores the baton pass status of each station
(including the host).
SW70
to
73
Baton pass status of
each station
(per station number)
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
b15 b14 b13 b12
b4
b3
b2
b1
b0
SW70
SW71
SW72
SW73
Numbers 1 to 64 in the table denote station numbers.
to
to
to
to
to
Baton pass normal
(including reserved
stations during online
and stations having
numbers higher than the
maximum station
number)
Baton pass abnormal
(including reserved
stations during offline
test and stations having
numbers higher than the
maximum station
number)
Stores the data link (cyclic transmission) status of
each station. (Including the host)
SW74
to
77
Data link status of
each station
(per station number)
SW74
SW75
SW76
SW77
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
b15 b14 b13 b12
b4
b3
b2
b1
b0
Numbers 1 to 64 in the table denote station numbers.
to
to
to
to
to
Executing data link
(including reserved
stations and stations
having numbers higher
than the maximum
station number)
Station not executing
data link
11
Summary of Contents for Q80BD-J71BR11
Page 2: ......
Page 24: ...A 22 A 22 MEMO ...
Page 50: ...4 6 4 6 MELSEC 4 FUNCTION MEMO ...
Page 92: ...6 36 6 36 MELSEC 6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION MEMO ...
Page 132: ...10 2 10 2 MELSEC 10 MELSEC DATA LINK LIBRARY MEMO 10 ...
Page 138: ...11 6 11 6 MELSEC 11 PROGRAMMING MEMO ...
Page 164: ...12 26 12 26 MELSEC 12 APPLICATION FUNCTIONS MEMO ...
Page 166: ...13 2 13 2 MELSEC 13 ERROR CODE MEMO 13 ...
Page 223: ......
