Omron CQM1H - 08-2005 Operation Manual page 243

Absolute Encoder Interface Board
Precautions when
Selecting an Absolute
Encoder
Input value 0 1
Output value 0° 1°
Input value 16 17
Output value 22° 24°
Input value 32 33
Output value 45° 46°
Input value 48 49
Output value 67° 69°
Input value 64 65
Output value 90° 91°
Input value 80 81
Output value 112° 114° 115° 117° 118° 120° 121° 122° 124° 125° 127° 128° 129° 131° 132° 134°
Input value 96 97
Output value 135° 136° 138° 139° 141° 142° 143° 145° 146° 148° 149° 150° 152° 153° 155° 156°
Input value 112 113
Output value 157° 159° 160° 162° 163° 165° 166° 167° 169° 170° 172° 173° 174° 176° 177° 179°
Input value 128 129
Output value 180° 181° 183° 184° 186° 187° 188° 190° 191° 193° 194° 195° 197° 198° 200° 201°
Input value 144 145
Output value 202° 204° 205° 207° 208° 210° 211° 212° 214° 215° 217° 218° 219° 221° 222° 224°
Input value 160 161
Output value 225° 226° 228° 229° 231° 232° 233° 235° 236° 238° 239° 240° 242° 243° 245° 246°
Input value 176 177
Output value 247° 249° 250° 252° 253° 255° 256° 257° 259° 260° 262° 263° 264° 266° 267° 269°
Input value 192 193
Output value 270° 271° 273° 274° 276° 277° 278° 280° 281° 283° 284° 285° 287° 288° 290° 291°
Input value 208 209
Output value 292° 294° 295° 297° 298° 300° 301° 302° 304° 305° 307° 308° 309° 311° 312° 314°
Input value 224 225
Output value 315° 316° 318° 319° 321° 322° 323° 325° 326° 328° 329° 330° 332° 333° 335° 336°
Input value 240 241
Output value 337° 339° 340° 342° 343° 345° 346° 347° 349° 350° 352° 353° 354° 356° 357° 359°
218
One of the following three kinds of Absolute Encoders must be used in order
to take advantage of all of the Absolute Interface Board's functions without
restrictions.
8 bit (256 resolution) gray binary
10 bit (1,024 resolution) gray binary
12 bit (4,096 resolution) gray binary
The resolution of the encoder that is being used with the Absolute Encoder
Board must be set in the PC Setup (bits 00 to 07 of DM 6643 or DM 6644) as
shown below.
8-bit resolution: 00
10-bit resolution: 01
12-bit resolution: 02
When an 8-bit encoder is used in 360 ° Mode, the 256 resolution is converted
to 360 ° Mode, so the values are converted as shown in the following table.
(The upper row shows the input value from the Encoder and the lower row
shows the output value after conversion to degrees.)
2 3 4 5
3° 4° 6° 7°
18 19 20 21
25° 27° 28° 30°
34 35 36 37
48° 49° 51° 52°
50 51 52 53
70° 72° 73° 75°
66 67 68 69
93° 94° 96° 97°
82 83 84 85
98 99 100 101
114 115 116 117
130 131 132 133
146 147 148 149
162 163 164 165
178 179 180 181
194 195 196 197
210 211 212 213
226 227 228 229
242 243 244 245
6 7 8 9
8° 10° 11° 13°
22 23 24 25
31° 32° 34° 35°
38 39 40 41
53° 55° 56° 58°
54 55 56 57
76° 77° 79° 80°
70 71 72 73
98° 100° 101° 103° 104° 105° 107° 108° 110° 111°
86 87 88 89
102 103 104 105
118 119 120 121
134 135 136 137
150 151 152 153
166 167 168 169
182 183 184 185
198 199 200 201
214 215 216 217
230 231 232 233
246 247 248 249
Section 8-3
10 11 12 13
14° 15° 17° 18°
26 27 28 29
37° 38° 39° 41°
42 43 44 45
59° 60° 62° 63°
58 59 60 61
82° 83° 84° 86°
74 75 76 77
90 91 92 93
106 107 108 109
122 123 124 125
138 139 140 141
154 155 156 157
170 171 172 173
186 187 188 189
202 203 204 205
218 219 220 221
234 235 236 237
250 251 252 253
14 15
20° 21°
30 31
42° 44°
46 47
65° 66°
62 63
87° 89°
78 79
94 95
110 111
126 127
142 143
158 159
174 175
190 191
206 207
222 223
238 239
254 255