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MELSEC-
3 SPECIFICATIONS
3.7.7 Remote I/O error data (2 occupied stations: Address RWrn 2, common to 4 and 8
occupied stations (4 occupied stations 2 modules): Address RWrn 3, RWrn 4)
The remote I/O error occurrence statuses of the CC-Link/LT remote stations during
data link are stored.
For the error definition, refer to the manual of the corresponding CC-Link/LT remote
station.
• When 2 stations are occupied, the remote I/O errors of CC-Link/LT are stored into
RWrn
2.
• When 4 or 8 stations (4 occupied stations
2 modules) are occupied, the remote
I/O errors of CC-Link/LT are stored into RWrn
3, RWrn 4.
(1) When 2 stations are occupied
Address b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RWrn 2
Station
12
Station
11
Station
10
Station
9
Station
8
Station
7
Station
6
Station
5
Station
4
Station
3
Station
2
Station
1
0: No remote I/O error occurred
1: Remote I/O error occurred
(2) When 4 stations are occupied
Address b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RWrn 3
Station
16
Station
15
Station
14
Station
13
Station
12
Station
11
Station
10
Station
9
Station
8
Station
7
Station
6
Station
5
Station
4
Station
3
Station
2
Station
1
RWrn 4
Station
28
Station
27
Station
26
Station
25
Station
24
Station
23
Station
22
Station
21
Station
20
Station
19
Station
18
Station
17
0: No remote I/O error occurred
1: Remote I/O error occurred
(3) When 8 stations (4 occupied stations 2 modules) are occupied
(first module: 1 to 32 stations, second module: 33 to 56 stations)
Address b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RWrn 3
Station
16
Station
15
Station
14
Station
13
Station
12
Station
11
Station
10
Station
9
Station
8
Station
7
Station
6
Station
5
Station
4
Station
3
Station
2
Station
1
RWrn 4
Station
32
Station
31
Station
30
Station
29
Station
28
Station
27
Station
26
Station
25
Station
24
Station
23
Station
22
Station
21
Station
20
Station
19
Station
18
Station
17
RWr(n 1) 3
Station
48
Station
47
Station
46
Station
45
Station
44
Station
43
Station
42
Station
41
Station
40
Station
39
Station
38
Station
37
Station
36
Station
35
Station
34
Station
33
RWr(n 1) 4
Station
56
Station
55
Station
54
Station
53
Station
52
Station
51
Station
50
Station
49
0: No remote I/O error occurred
1: Remote I/O error occurred