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| Fieldbus Communications Support |
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Data Length | The following table shows the relationship between the actual data length of the | ||
| island and the length of the code on INTERBUS. The actual data length (anywhere | ||
| from 0 to 16 words) represents the greater of the input or output data length. | ||
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Actual Length of Island Data | INTERBUS Data Length | Data Length Code (Hex) | |
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up to 1 word* |
| 1 word | 1 |
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2 words |
| 2 words | 2 |
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3 words |
| 3 words | 3 |
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4 words |
| 4 words | 4 |
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5 words |
| 5 words | 5 |
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6 words |
| 6 words | E |
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7 words |
| 7 words | F |
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8 words |
| 8 words | 6 |
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9 words |
| 9 words | 7 |
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10 words |
| 10 words | 15 |
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11 to 12 words |
| 12 words | 16 |
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13 to 14 words |
| 14 words | 17 |
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15 to 16 words |
| 16 words | 12 |
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17 to 24 words** |
| 24 words | 13 |
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25 to 26 words** |
| 26 words | 11 |
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* The status word is included in the data length, so the minimum allowable data length for an Advantys island is 2 | |||
words (data word + status word). |
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** The STB NIB 1010 INTERBUS NIM supports only up to 16 words in each direction (input/output). | |||
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890USE19600 April 2004 | 37 |
