The controller executable outputs JSON data whenever certain internal values are updated. The JSON output contains one or more of the following fields.
| Field name | Content type | Value range | Number of values | Description |
|---|---|---|---|---|
| TrackSpeeds | int | 0-255 | 48 | The speed each track is set at. |
| TrackContacts | boolean | false-true | 96 | Whether or not a contact is triggered. Contacts on the same track are consecutive, for instance the contacts on track 0 are represented by indexes 0 and 1 in this array. |
| TrackPoints | boolean | false-true (Branch=true,Straight=false) | 30 | Whether a given directional switch is set to straight or branch. |
| TrainPositions | int | 0-47 | 11 | The track each train is currently on. |
| Bell | boolean | false-true | 1 | Whether the bell is ringing or not. |
| Gate0 | boolean | false-true | 1 | Whether gate 0 is raised or not. |
| Gate1 | boolean | false-true | 1 | Whether gate 1 is raised or not. |