Impact of Offline Chargers on Authorizations
Julian Ares
Last Update il y a 5 mois
Charging stations can maintain a local list of authorized tags (such as RFID cards) that are allowed to start a charging session. This list can be updated remotely by the central system, allowing for offline authorization of charging sessions.
Note: As a prerequisite, the charger must have the Local Authorization Enabled. This will be accessible via OCPP configuration sometimes, depending on the charger. Other times, a technician would need to log into the appropriate portal and make this change directly on the charger.
Some important things to note about the local list are as follows:
- Chargers have a limited number of authorizations is predefined by the charger. For ICE it is 1,000,000.
- Every time the rule is registered, the increment is displayed on the Charger Details > Authorization Policies tab, so you can see how many more authorizations can be stored on the machine.
- When a policy is removed or set to inactive, InControl tells the charger to delete the local authorization.
- If a customer has a 'FORBID ANY..' they are in luck - if we fallback to local list, this is the default behavior.
- If a customer has 'ALLOW ALL...' we probably want to allow a fall back to Free Vend so that anyone can still charge.
| Policy | With Internet | No Internet: fallback mode is Free Vend | No Internet: fallback mode is Local list |
| ENABLE ALL VEHICLES | Autocharge is enabled on the charger, anyone can use it when they plug in | Anyone can use it when they plug in, but now must hit start on charger | Unless the EVCCID is saved as an individual policy, nobody will be able to charge |
| FORBID ALL VEHICLES | Autocharge disabled | Anyone can use it when they plug in, and must hit start on charger | If no EVCCIDs are saved individual policies, the policy is supported by default here |
Local List Frequently Asked Questions
| Question | Answer |
| Which Authorization policy types can be locally stored? | Only PIN, RFID, and vehicle EVCCIDs are stored locally and will still have effect even when there is no internet connection. |
| Will the Authorization policy be added to the local storage once added on InControl? | Yes, authorization policies are stored locally once they are created on InControl. |
| Can 'Forbid' authorization be locally stored? | Yes, once the policy is created on InControl, it will be stored locally. |
| Can multiple PIN codes be stored for ICE chargers? | No, ICE chargers do not support multiple PINs authorization. This charger limitation will be addressed with the new Upper FW coming in 2024. |
| Will policy still be locally stored if marked as 'Inactive' on InControl? | No, once a policy is marked Inactive on InControl, it is removed from local storage. If the unit is offline, it will be removed once the charger returns online. |
| What happens when the maximum amount of policies is reached at the local storage and a new authorization policy is added? | The oldest policy will be deleted and be replaced with the newest one. |