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15. Modbus RTU rotary switch addresses
Example: To set the slave address to the value 142, set the rotary switches SW6 and SW7 to "8" and "E", respectively. Note that 0 is not
a valid slave address as this is used for broadcasting.
Modbus
address
SW6 SW7
Modbus
address
SW6 SW7
Modbus
address
SW6 SW7
Modbus
address
SW6 SW7
Modbus
address
SW6 SW7
1 0 1 51 3 3 101 6 5 151 9 7 201 C 9
2 0 2 52 3 4 102 6 6 152 9 8 202 C A
3 0 3 53 3 5 103 6 7 153 9 9 203 C B
4 0 4 54 3 6 104 6 8 154 9 A 204 C C
5 0 5 55 3 7 105 6 9 155 9 B 205 C D
6 0 6 56 3 8 106 6 A 156 9 C 206 C E
7 0 7 57 3 9 107 6 B 157 9 D 207 C F
8 0 8 58 3 A 108 6 C 158 9 E 208 D 0
9 0 9 59 3 B 109 6 D 159 9 F 209 D 1
10 0 A 60 3 C 110 6 E 160 A 0 210 D 2
11 0 B 61 3 D 111 6 F 161 A 1 211 D 3
12 0 C 62 3 E 112 7 0 162 A 2 212 D 4
13 0 D 63 3 F 113 7 1 163 A 3 213 D 5
14 0 E 64 4 0 114 7 2 164 A 4 214 D 6
15 0 F 65 4 1 115 7 3 165 A 5 215 D 7
16 10 66 42 116 74 166 A6 216 D8
17 11 67 43 117 75 167 A7 217 D9
18 12 68 44 118 76 168 A8 218 DA
19 13 69 45 119 77 169 A9 219 DB
20 1 4 70 4 6 120 7 8 170 A A 220 D C
21 1 5 71 4 7 121 7 9 171 A B 221 D D
22 1 6 72 4 8 122 7 A 172 A C 222 D E
23 1 7 73 4 9 123 7 B 173 A D 223 D F
24 1 8 74 4 A 124 7 C 174 A E 224 E 0
25 1 9 75 4 B 125 7 D 175 B F 225 E 1
26 1 A 76 4 C 126 7 E 176 B 0 226 E 2
27 1 B 77 4 D 127 7 F 177 B 1 227 E 3
28 1 C 78 4 E 128 8 0 178 B 2 228 E 4
29 1 D 79 4 F 129 8 1 179 B 3 229 E 5
30 1 E 80 5 0 130 8 2 180 B 4 230 E 6
31 1 F 81 5 1 131 8 3 181 B 5 231 E 7
32 2 0 82 5 2 132 8 4 182 B 6 232 E 8
33 2 1 83 5 3 133 8 5 183 B 7 233 E 9
34 2 2 84 5 4 134 8 6 184 B 8 234 E A
35 2 3 85 5 5 135 8 7 185 B 9 235 E B
36 2 4 86 5 6 136 8 8 186 B A 236 E C
37 2 5 87 5 7 137 8 9 187 B B 237 E D
38 2 6 88 5 8 138 8 A 188 B C 238 E E
39 2 7 89 5 9 139 8 B 189 B D 239 E F
40 2 8 90 5 A 140 8 C 190 B E 240 F 0
41 2 9 91 5 B 141 8 D 191 B F 241 F 1
42 2 A 92 5 C 142 8 E 192 C 0 242 F 2
43 2 B 93 5 D 143 8 F 193 C 1 243 F 3
44 2 C 94 5 E 144 9 0 194 C 2 244 F 4
45 2 D 95 5 F 145 9 1 195 C 3 245 F 5
46 2 E 96 6 0 146 9 2 196 C 4 246 F 6
47 2 F 97 6 1 147 9 3 197 C 5 247 F 7
48 3 0 98 6 2 148 9 4 198 C 6
49 3 1 99 6 3 149 9 5 199 C 7
50 3 2 100 6 4 150 9 6 200 C 8
It is very important to ensure that two devices do not
have the same address on the network. If two
devices have the same address, the result will be an
abnormal behaviour of the whole serial bus.