Change of Identity
Overview
NOTE - Change of Identity messages are only sent for freight trains.
One or more Change of Identity messages may be sent for a freight train, after activation, where the class of the train is to change. This will happen if the train will run without wagons (i.e. a Class 6 service runs as a Class 0), or if the train is carrying a wagon with a defect and must run at a slower speed.
Data structure
Header
| Field | Description |
|---|---|
| msg_type | Set to '0007' for an change of identity message |
| source_dev_id | Set to the device ID of the terminal that issued the request |
| source_system_id | Set to "TRUST" for a change of identity message |
| original_data_source | Set to "TOPS" for an change of identity message |
Body
| Field | Description |
|---|---|
| train_id | The 10-character unique identity for this train at TRUST activation time |
| current_train_id | If this is the second or subsequent change of identity for a train, this field will contain the revised_train_id field from the previous change of identity message |
| revised_train_id | The new 10-character unique identity for this train |
| train_file_address | The TOPS train file address, if applicable |
| train_service_code | Train service code as per schedule |
| event_timestamp | The time, in milliseconds, when the train's identity was changed |