IAI America XSEL-S - Manual (Page 35)

Chapter 3 Operation (Construction for Network)
29
IA Net
XSEL-R/S
(1) Station Numbers and Shared Words
The table below shows the relationship between the XSEL or extension I/O unit station number
assignment and the word numbers of the shared memory area.
The station number assigned to any XSEL unit depends upon which words of the shared
memory area the XSEL will occupy. The station number is assigned to an XSEL unit through a
parameter setting.
Station No. Shared Word
No.
Station No. Shared Word
No.
Station No.
Shared Word
No.
Station No. Shared Word
No.
0 0 to 3 16 64 to 67 32 128 to 131 48 192 to 195
1 4 to 7 17 68 to 71 33 132 to 135 49 196 to 199
2 8 to 11 18 72 to 75 34 136 to 139 50 200 to 203
3 12 to 15 19 76 to 79 35 140 to 143 51 204 to 207
4 16 to 19 20 80 to 83 36 144 to 147 52 208 to 211
5 20 to 23 21 84 to 87 37 148 to 151 53 212 to 215
6 24 to 27 22 88 to 91 38 152 to 155 54 216 to 219
7 28 to 31 23 92 to 95 39 156 to 159 55 220 to 223
8 32 to 35 24 96 to 99 40 160 to 163 56 224 to 227
9 36 to 39 25 100 to 103 41 164 to 167 57 228 to 231
10 40 to 43 26 104 to 107 42 168 to 171 58 232 to 235
11 44 to 47 27 108 to 111 43 172 to 175 59 236 to 239
12 48 to 51 28 112 to 115 44 176 to 179 60 240 to 243
13 52 to 55 29 116 to 119 45 180 to 183 61 244 to 247
14 56 to 59 30 120 to 123 46 184 to 187 62 248 to 251
15 60 to 63 31 124 to 127 47 187 to 191 63 252 to 255
(2) Station No. of Extension I/O Unit
Extension I/O units occupy four stations for each unit, and the station number is to be set on the
rotary switches on the front panel.
The relation of the rotary switches and the station numbers is as shown in the table below. This
relation also cannot be changed. The relation of the station numbers and the shared word
numbers is as shown in the table above.
Rotary Switch Station No. Shared Word No.
0 0 to 3 0 to 15
1 4 to㧣 16 to 31
2 8 to 11 32 to 47
3 12 to 15 48 to 63
4 16 to 19 64 to 79
5 20 to 23 80 to 95
6 24 to 27 96 to 111
7 28 to 31 112 to 127
8 32 to 35 128 to 143
9 36 to 39 144 to 159
A 40 to 43 160 to 175
B 44 to 47 176 to 191
C 48 to 51 192 to 207
D 52 to 55 208 to 223
E 56 to 59 224 to 239
F 60 to 63 240 to 255