Good Shepherd Primary School and Nursery School, Derry

Ocpp-809 — Driver !!exclusive!!

Once the installation finishes, go to Control Panel > Devices and Printers . Right-click the new printer icon and select "Set as default printer."

: For mobile integration, OCOM provides a free SDK for Android. Installation Steps

Plug the printer into a power source and turn it on. ocpp-809 driver

| Test | Description | Expected Result | |------|-------------|----------------| | T1 – Setpoint change | DSO sends 50kW → 20kW limit | CSMS reduces charger power within 5 seconds | | T2 – Link failure | Cut IEC 104 link for 10 minutes | Driver keeps last limit, then fallback after timeout | | T3 – Reject invalid | DSO sends 0kW limit but min profile is 6kW | Driver rejects command, sends negative confirm | | T4 – Reverse telemetry | Charger consumes 7.2kW | Driver sends M_ME_TF_1 with value 7200 |

The spec was simple: Build a driver that acts as a man-in-the-middle. Translate up, translate down. Don’t lose telemetry. Once the installation finishes, go to Control Panel

: Open the downloaded .exe (Windows) or .zip (Linux) file.

: Delivers 80mm wide receipts at high speeds (300mm/sec). | Test | Description | Expected Result |

[EV Charger] <--OCPP--> [CSMS] <--Internal API--> [OCPP-809 Driver] <--IEC 104--> [Grid RTU/SCADA] | ^ v | [Database] [Control Center / DSO]