Slave Data_Exchange Active Flags (Word N+9 To Word N+16) - Omron CS1W-PRM21 Operation Manual

Allocated CIO Area Words
4-2-8

Slave Data_Exchange Active Flags (Word n+9 to Word n+16)

Word n+9 to n+16 [n = CIO 1,500 + (25 x unit number)]]
Bit Name
– Slave
Data_Exchange
Active flags
96
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.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word n+9
15 14 13 12
Word n+10
31 30 29 28
Word n+11
47 46 45 44
Word n+12
63 62 61 60
Word n+13
79 78 77 76
Word n+14
95 94 93 92
Word n+15
111 110 109 108 107 106 105 104 103 102 101 100 99
Word n+16
125 124 123 122 121 120 119 118 117 116 115 114 113 112
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
Status Controlled
by
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
11 10 9 8 7 6 5 4
27 26 25 24 23 22 21 20
43 42 41 40 39 38 37 36
59 58 57 56 55 54 53 52
75 74 73 72 71 70 69 68
91 90 89 88 87 86 85 84
Unit operation
Section 4-2
Slave station 00 ~ 15
3 2 1 0
Slave station 16 ~ 31
19 18 17 16
Slave station 32 ~ 47
35 34 33 32
Slave station 48 ~ 63
51 50 49 48
Slave station 64 ~ 79
67 66 65 64
Slave station 80 ~ 95
83 82 81 80
Slave station 96 ~ 111
98 97 96
Slave station 112 ~ 125