The board has a field of 9 jumpers designated "ID" labelled 1-8 and MB. Jumper MB is reserved for future purposes, leaving 8 for addressing. The address is the numeric address used by Xwire to select a particular board on the Xwire bus. Every board connected to an Xwire system (be it using the Xwire connections or RS485), must have a unique address. The jumpers are in a binary format meaning each jumper has a unique value. Any address value from 0 to 253 is possible by adding links to the jumper connector. Every link added adds that jumper's value to the final total.
| Jumper | Value |
|---|---|
| JP1 | 1 |
| JP2 | 2 |
| JP3 | 4 |
| JP4 | 8 |
| JP5 | 16 |
| JP6 | 32 |
| JP7 | 64 |
| JP8 | 128 |
| MB | Reserved for future use. |
Example: If 3 jumper links are installed, JP1, JP5 and JP6, the address would be 49. (1 + 16 + 32 = 49)