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96
Allocated CIO Area Words
Section 4-2
4-2-8
Slave Data_Exchange Active Flags (Word n+9 to Word n+16)
The Slave Data_Exchange Active flags indicate for each slave station if it is in
Data_Exchange mode with the PROFIBUS-DP Master Unit. The flags are
allocated to a block of eight CIO words, and each bit in the block corresponds
to a station address.
When a slave station is in Data_Exchange with the PROFIBUS-DP Master
Unit to which it has been allocated, it is exchanging I/O Data with the PROFI-
BUS-DP Master Unit.
If the PROFIBUS-DP Master Unit is in CLEAR mode, it will read the slave’s
input data, but send zeros or an empty message as output data.
If the PROFIBUS-DP Master Unit is in OPERATE mode, it will read the
slave’s input data, and send any output data provided by the PLC CPU
Word n+9 to n+16 [n = CIO 1,500 + (25 x unit number)]]
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word n+9
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Word n+10
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
Word n+11
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
Word n+12
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
Word n+13
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
Word n+14
111 110 109 108 107 106 105 104 103 102 101 100
99
98
97
96
Word n+15
125 124 123 122 121 120 119 118 117 116 115 114 113 112
Word n+16
Slave station 00 ~ 15
Slave station 16 ~ 31
Slave station 32 ~ 47
Slave station 48 ~ 63
Slave station 64 ~ 79
Slave station 80 ~ 95
Slave station 96 ~ 111
Slave station 112 ~ 125
Bit
Name
Status
Controlled
by
Unit operation
–
Slave
Data_Exchange
Active flags
ON
Unit
If the bit corresponding to a slave station address is ON, it indicates that
this slave station
• is allocated to the PROFIBUS-DP Master Unit, and
• is exchanging I/O Data with PROFIBUS-DP Master Unit.
In this case, the PROFIBUS-DP Master Unit must be in the CLEAR
mode or the OPERATE mode.
OFF
Unit
If the bit corresponding to a slave station address is OFF, it indicates
that the slave is not in Data_Exchange with this PROFIBUS-DP Master
Unit, due to the fact that
• the slave station is not allocated to this PROFIBUS-DP Master Unit,
or
• the slave station has been allocated to this PROFIBUS-DP Master
Unit, but is forced out of Data_Exchange mode, due to a communica-
tion error, or
• the slave station has been allocated to this PROFIBUS-DP Master
Unit, but is not responding,
• the slave station has been allocated to this PROFIBUS-DP Master
Unit, but is it has temporarily been disabled,
• the PROFIBUS-DP Master Unit is not in CLEAR or OPERATE mode
Содержание SYSMAC CJ1W-PRM21
Страница 2: ...iv...
Страница 36: ...22 Basic Operating Procedure Section 1 5...
Страница 52: ...38 Defining PROFIBUS DP in the Software Section 2 5...
Страница 112: ...98 Allocated CIO Area Words Section 4 2...
Страница 122: ...108 Command Response Reference Section 5 2...
Страница 160: ...146 Replacing the Unit Section 7 8...
Страница 174: ...160 Appendix...
Страница 180: ...166 I O Data Conversions Appendix D...
Страница 186: ...172 Configurator Error and Warning Messages Appendix E...
Страница 187: ...173 Index...
Страница 188: ...174 Index...
Страница 190: ...176 Revision History...