Chapter 4 PLC Features
4.2 Commands
ME0416-1A 4-17
[4] Fieldbus Communication Command
Fieldbus Communication Command should assign the input and output domains available for
communication with a host device (e.g. PLC) to the bit OM domains.
Shown below is an example of how to describe the command.
DFC NWXCHG M512 0
Example of How to Describe Fieldbus Communication Command
The input and output domain assignment for the fieldbus communication is as shown below.
Fieldbus Communication Command Available Parameters and Available Range
Bit Word Constant Label
WL
Indication
index
X Y M SM
AM
T C D SD
T C IX DEC HEX L
S1 〇 〇
S2 〇 〇
* S2 does not have any function.
The input and output assignment for the fieldbus communication is as shown below.
Input and Output Domain Assignment for Fieldbus Communication: CC-Link, CC-Link IE
FB→LC
RY0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RY1 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RWw0 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RWw1 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48
RWw2 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64
RWw3 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80
LC→FB
RX0 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96
RX1 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112
RWr0 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128
RWr1 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144
RWr2 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160
RWr3 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176
For CC-Link and CC-Link IE Field, the assignment should be made in the order of RY, RWw, RX
and RWr.
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