Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 466

APPENDICES
No. Name
2
SW0074
(116)/
SW0075
Cyclic transmission status
(117)/
of each station
SW0076
(118)/
SW0077
(119)
2
SW0078
(120)/
SW0079 Parameter
(121)/ communication status of
SW007A each station
(122)/
SW007B
(123)
2
SW007C
(124)/
SW007D
Parameter error status of
(125)/
each station
SW007E
(126)/
SW007F
(127)
2: Valid only when the SB0047 is off. When it turns on (error), the last data are retained.
App - 27
Table 4 Link special register (SW) list (continued)
Description
Stores the cyclic transmission status of each station (including
the host).
0: Executing cyclic transmission (including the station with
the maximum station number and smaller number as well
as reserved stations)
1: Cyclic transmission not executed
b15 b14 b13 b12
SW0074 16 15 14 13
SW0075
32 31 30 29
SW0076
48 47 46 45
SW0077 64 63 62 61
If a CPU module installed together with QJ71LP21S-25 is turned
OFF, detection of a data link error may take more time than
usual.
For immediate detection of a data link error, program an interlock
using the link relay (LB) in each station's send range. (Refer to
Section 6.2.3.)
Stores the parameter communication status of each station.
0: Executing communication other than parameter
communication (including the stations with the maximum
station number and smaller numbers as well as reserved
stations)
1: Executing parameter communication
b15 b14 b13 b12
SW0078 16 15 14 13
SW0079 32 31 30 29
48 47 46 45
SW007A
SW007B 64 63 62 61
Stores the parameter status of each station
0: Normal parameter (including the maximum station number
and smaller numbers as well as reserved stations)
1: Abnormal parameter
b15 b14 b13 b12
SW007C
16 15 14 13
SW007D
32 31 30 29
SW007E
48 47 46 45
SW007F
64 63 62 61
to b4 b3 b2 b1 b0
5 4 3 2 1
to
to 21 20 19 18 17
34
to 37 36 35 33
to 53 52 51 50 49
Numbers 1 to 64 in the above table
indicate the station numbers.
to b4 b3 b2 b1 b0
to 5 4 3 2 1
to 21 20 19 18 17
34
to 37 36 35 33
to 53 52 51 50 49
Numbers 1 to 64 in the above table
indicate the station numbers.
to b4 b3 b2 b1 b0
to 5 4 3 2 1
to 21 20 19 18 17
34
to 37 36 35 33
53 52 51 50 49
to
Numbers 1 to 64 in the above table
indicate the station numbers.
[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 - 27