| Data bit 1 | 01 | 13 | Data bit 5 |
| Data bit 2 | 02 | 14 | Data bit 6 |
| Data bit 3 | 03 | 15 | Data bit 7 |
| Data bit 4 | 04 | 16 | Data bit 8 |
| End or Identify | 05 | 17 | Remote Enabled |
| Data valid | 06 | 18 | GND |
| Not ready for Data | 07 | 19 | GND |
| Not data accepted | 08 | 20 | GND |
| Interface clear | 09 | 21 | GND |
| Service request | 10 | 22 | GND |
| Attention | 11 | 23 | GND |
| GND | 12 | 24 | GND |