Hi,
I'm using your DALI RS485 gateway and I'm setting percentages through KNX objects (scale).
Scale goes from 0-100%, which in byte is 0-255 (00-FF). So 50% = 127 (or 128).
However, it doesn't seem like DALI is using a proportional dimming curve. When I open DALI Cockpit, which I use to program addresses on DALI networks, there's an option to send commands manually. When I opt to send a dimming value, I can select either byte value (0-255) og percentage (0-100%). However, when I increment the byte value, it doesn't increment the percentage proportionally. You can see the dimming curve at the bottom of this post. The 255 (FF) value is invalid dimming value in DALI.
Basically, the first 10 byte values (0-10) varies from 0-0.128%, but the last 10 (244-254) varies from 76.11-100%.
So whenever I write the code underneath, I'm not actually setting the lamp to 50%, but 3,12%. Is this a correct assumption? Or are you guys doing the math inside the user.dali script?
This is the code example inside your DALI RS485 manual:
50% * 2.54 = 127. So are you guys converting 127 to 229 for DALI's dimming profile (229 = 50,53%)?
I'm using your DALI RS485 gateway and I'm setting percentages through KNX objects (scale).
Scale goes from 0-100%, which in byte is 0-255 (00-FF). So 50% = 127 (or 128).
However, it doesn't seem like DALI is using a proportional dimming curve. When I open DALI Cockpit, which I use to program addresses on DALI networks, there's an option to send commands manually. When I opt to send a dimming value, I can select either byte value (0-255) og percentage (0-100%). However, when I increment the byte value, it doesn't increment the percentage proportionally. You can see the dimming curve at the bottom of this post. The 255 (FF) value is invalid dimming value in DALI.
Basically, the first 10 byte values (0-10) varies from 0-0.128%, but the last 10 (244-254) varies from 76.11-100%.
So whenever I write the code underneath, I'm not actually setting the lamp to 50%, but 3,12%. Is this a correct assumption? Or are you guys doing the math inside the user.dali script?
Code:
dalicmd('internal', 'arc', { addrtype = 'broadcast', value = 127 })This is the code example inside your DALI RS485 manual:
Code:
require('user.dali')
value = event.getvalue()
value = math.floor(value * 2.54)
dalicmd('internal', 'arc', { addrtype = 'group', address = 7, value = value })50% * 2.54 = 127. So are you guys converting 127 to 229 for DALI's dimming profile (229 = 50,53%)?
Code:
| Byte | HEX | Percentage |
|------|-----|------------|
| 0 | 00 | 0% |
| 1 | 01 | 0.1% |
| 2 | 02 | 0.103% |
| 3 | 03 | 0.106% |
| 4 | 04 | 0.109% |
| 5 | 05 | 0.112% |
| 6 | 06 | 0.115% |
| 7 | 07 | 0.118% |
| 8 | 08 | 0.121% |
| 9 | 09 | 0.124% |
| 10 | 0A | 0.128% |
| 11 | 0B | 0.131% |
| 12 | 0C | 0.135% |
| 13 | 0D | 0.139% |
| 14 | 0E | 0.143% |
| 15 | 0F | 0.147% |
| 16 | 10 | 0.151% |
| 17 | 11 | 0.155% |
| 18 | 12 | 0.159% |
| 19 | 13 | 0.163% |
| 20 | 14 | 0.168% |
| 21 | 15 | 0.173% |
| 22 | 16 | 0.177% |
| 23 | 17 | 0.182% |
| 24 | 18 | 0.187% |
| 25 | 19 | 0.193% |
| 26 | 1A | 0.198% |
| 27 | 1B | 0.203% |
| 28 | 1C | 0.209% |
| 29 | 1D | 0.215% |
| 30 | 1E | 0.221% |
| 31 | 1F | 0.227% |
| 32 | 20 | 0.233% |
| 33 | 21 | 0.24% |
| 34 | 22 | 0.246% |
| 35 | 23 | 0.253% |
| 36 | 24 | 0.26% |
| 37 | 25 | 0.267% |
| 38 | 26 | 0.275% |
| 39 | 27 | 0.282% |
| 40 | 28 | 0.29% |
| 41 | 29 | 0.298% |
| 42 | 2A | 0.306% |
| 43 | 2B | 0.315% |
| 44 | 2C | 0.324% |
| 45 | 2D | 0.332% |
| 46 | 2E | 0.342% |
| 47 | 2F | 0.351% |
| 48 | 30 | 0.361% |
| 49 | 31 | 0.371% |
| 50 | 32 | 0.381% |
| 51 | 33 | 0.392% |
| 52 | 34 | 0.402% |
| 53 | 35 | 0.414% |
| 54 | 36 | 0.425% |
| 55 | 37 | 0.437% |
| 56 | 38 | 0.449% |
| 57 | 39 | 0.461% |
| 58 | 3A | 0.474% |
| 59 | 3B | 0.487% |
| 60 | 3C | 0.501% |
| 61 | 3D | 0.515% |
| 62 | 3E | 0.529% |
| 63 | 3F | 0.543% |
| 64 | 40 | 0.559% |
| 65 | 41 | 0.574% |
| 66 | 42 | 0.59% |
| 67 | 43 | 0.606% |
| 68 | 44 | 0.623% |
| 69 | 45 | 0.64% |
| 70 | 46 | 0.658% |
| 71 | 47 | 0.676% |
| 72 | 48 | 0.695% |
| 73 | 49 | 0.714% |
| 74 | 4A | 0.734% |
| 75 | 4B | 0.754% |
| 76 | 4C | 0.775% |
| 77 | 4D | 0.796% |
| 78 | 4E | 0.819% |
| 79 | 4F | 0.841% |
| 80 | 50 | 0.864% |
| 81 | 51 | 0.888% |
| 82 | 52 | 0.913% |
| 83 | 53 | 0.938% |
| 84 | 54 | 0.964% |
| 85 | 55 | 0.991% |
| 86 | 56 | 1.018% |
| 87 | 57 | 1.047% |
| 88 | 58 | 1.076% |
| 89 | 59 | 1.105% |
| 90 | 5A | 1.136% |
| 91 | 5B | 1.167% |
| 92 | 5C | 1.2% |
| 93 | 5D | 1.233% |
| 94 | 5E | 1.267% |
| 95 | 5F | 1.302% |
| 96 | 60 | 1.338% |
| 97 | 61 | 1.375% |
| 98 | 62 | 1.413% |
| 99 | 63 | 1.452% |
| 100 | 64 | 1.492% |
| 101 | 65 | 1.534% |
| 102 | 66 | 1.576% |
| 103 | 67 | 1.62% |
| 104 | 68 | 1.665% |
| 105 | 69 | 1.711% |
| 106 | 6A | 1.758% |
| 107 | 6B | 1.807% |
| 108 | 6C | 1.857% |
| 109 | 6D | 1.908% |
| 110 | 6E | 1.961% |
| 111 | 6F | 2.02% |
| 112 | 70 | 2.07% |
| 113 | 71 | 2.13% |
| 114 | 72 | 2.19% |
| 115 | 73 | 2.25% |
| 116 | 74 | 2.31% |
| 117 | 75 | 2.37% |
| 118 | 76 | 2.44% |
| 119 | 77 | 2.51% |
| 120 | 78 | 2.58% |
| 121 | 79 | 2.65% |
| 122 | 7A | 2.72% |
| 123 | 7B | 2.8% |
| 124 | 7C | 2.87% |
| 125 | 7D | 2.95% |
| 126 | 7E | 3.04% |
| 127 | 7F | 3.12% |
| 128 | 80 | 3.21% |
| 129 | 81 | 3.29% |
| 130 | 82 | 3.39% |
| 131 | 83 | 3.48% |
| 132 | 84 | 3.58% |
| 133 | 85 | 3.67% |
| 134 | 86 | 3.78% |
| 135 | 87 | 3.88% |
| 136 | 88 | 3.99% |
| 137 | 89 | 4.1% |
| 138 | 8A | 4.21% |
| 139 | 8B | 4.33% |
| 140 | 8C | 4.45% |
| 141 | 8D | 4.57% |
| 142 | 8E | 4.7% |
| 143 | 8F | 4.83% |
| 144 | 90 | 4.96% |
| 145 | 91 | 5.1% |
| 146 | 92 | 5.24% |
| 147 | 93 | 5.39% |
| 148 | 94 | 5.53% |
| 149 | 95 | 5.69% |
| 150 | 96 | 5.85% |
| 151 | 97 | 6.01% |
| 152 | 98 | 6.17% |
| 153 | 99 | 6.34% |
| 154 | 9A | 6.52% |
| 155 | 9B | 6.7% |
| 156 | 9C | 6.89% |
| 157 | 9D | 7.08% |
| 158 | 9E | 7.27% |
| 159 | 9F | 7.47% |
| 160 | A0 | 7.68% |
| 161 | A1 | 7.89% |
| 162 | A2 | 8.11% |
| 163 | A3 | 8.34% |
| 164 | A4 | 8.57% |
| 165 | A5 | 8.8% |
| 166 | A6 | 9.05% |
| 167 | A7 | 9.3% |
| 168 | A8 | 9.56% |
| 169 | A9 | 9.82% |
| 170 | AA | 10.09% |
| 171 | AB | 10.37% |
| 172 | AC | 10.66% |
| 173 | AD | 10.95% |
| 174 | AE | 11.26% |
| 175 | AF | 11.57% |
| 176 | B0 | 11.89% |
| 177 | B1 | 12.22% |
| 178 | B2 | 12.55% |
| 179 | B3 | 12.9% |
| 180 | B4 | 13.26% |
| 181 | B5 | 13.63% |
| 182 | B6 | 14% |
| 183 | B7 | 14.39% |
| 184 | B8 | 14.79% |
| 185 | B9 | 15.2% |
| 186 | BA | 15.62% |
| 187 | BB | 16.05% |
| 188 | BC | 16.5% |
| 189 | BD | 16.95% |
| 190 | BE | 17.42% |
| 191 | BF | 17.9% |
| 192 | C0 | 18.4% |
| 193 | C1 | 18.91% |
| 194 | C2 | 19.43% |
| 195 | C3 | 19.97% |
| 196 | C4 | 20.52% |
| 197 | C5 | 21.09% |
| 198 | C6 | 21.68% |
| 199 | C7 | 22.28% |
| 200 | C8 | 22.89% |
| 201 | C9 | 23.53% |
| 202 | CA | 24.18% |
| 203 | CB | 24.85% |
| 204 | CC | 25.53% |
| 205 | CD | 26.24% |
| 206 | CE | 26.97% |
| 207 | CF | 27.71% |
| 208 | D0 | 28.48% |
| 209 | D1 | 29.27% |
| 210 | D2 | 30.08% |
| 211 | D3 | 30.91% |
| 212 | D4 | 31.77% |
| 213 | D5 | 32.65% |
| 214 | D6 | 33.55% |
| 215 | D7 | 34.48% |
| 216 | D8 | 35.43% |
| 217 | D9 | 36.41% |
| 218 | DA | 37.42% |
| 219 | DB | 38.46% |
| 220 | DC | 39.52% |
| 221 | DD | 40.62% |
| 222 | DE | 41.74% |
| 223 | DF | 42.9% |
| 224 | E0 | 44.08% |
| 225 | E1 | 45.3% |
| 226 | E2 | 46.56% |
| 227 | E3 | 47.85% |
| 228 | E4 | 49.17% |
| 229 | E5 | 50.53% |
| 230 | E6 | 51.93% |
| 231 | E7 | 53.37% |
| 232 | E8 | 54.84% |
| 233 | E9 | 56.36% |
| 234 | EA | 57.92% |
| 235 | EB | 59.53% |
| 236 | EC | 61.17% |
| 237 | ED | 62.87% |
| 238 | EE | 64.61% |
| 239 | EF | 66.39% |
| 240 | F0 | 68.23% |
| 241 | F1 | 70.12% |
| 242 | F2 | 72.06% |
| 243 | F3 | 74.06% |
| 244 | F4 | 76.11% |
| 245 | F5 | 78.21% |
| 246 | F6 | 80.38% |
| 247 | F7 | 82.6% |
| 248 | F8 | 84.89% |
| 249 | F9 | 87.24% |
| 250 | FA | 89.65% |
| 251 | FB | 92.14% |
| 252 | FC | 94.69% |
| 253 | FD | 97.31% |
| 254 | FE | 100% |