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Commission Implementing Regulation (EU) 2016/799Show full title
Commission Implementing Regulation (EU) 2016/799 of 18 March 2016 implementing Regulation (EU) No 165/2014 of the European Parliament and of the Council laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance)
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- Revised 26/02/202011.25 MB
- Revised 17/04/201810.62 MB
- Revised 26/05/20169.89 MB
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4.4. Error Handling
This section describes how potential error conditions by the external GNSS facility are addressed and recorded in the VU.
4.4.1 Communication error with the external GNSS facility
GNS_28If the VU does not manage to communicate to the coupled external GNSS facility for more than 20 continuous minutes, the VU shall generate and record in the VU an event of type EventFaultType with the value of enum ‘53’H External GNSS communication fault and with the timestamp set to the current time. The event will be generated only if the following two conditions are satisfied: (a) the Smart Tachograph is not in calibration mode and (b) the vehicle is moving. In this context, a communication error is triggered when the VU Secure Transceiver does not receive a response message after a request message as described in 4.2.
4.4.2 Breach of the physical integrity of the external GNSS facility
GNS_29If the external GNSS facility has been breached, the GNSS Secure Transceiver shall erase all its memory including cryptographic material. As described in GNS_25 and GNS_26, the VU shall detect tampering if the Response has status ‘6690’. The VU shall then generate an event of type EventFaultType enum ‘55’H Tamper detection of GNSS.
4.4.3 Absence of position information from GNSS receiver
GNS_30If the GNSS Secure Transceiver does not receive data from the GNSS receiver for more than 3 continuous hours, the GNSS Secure Transceiver shall generate a response message to the READ RECORD command with RECORD number equal to ‘01’ with a Data Field of 12 bytes all set to 0xFF. Upon reception of the Response message with this value of the data field, the VU shall generate and record an event of type EventFaultType enum ‘52’H external GNSS receiver fault with a timestamp equal to the current value of time only if the following two conditions are satisfied: a) the Smart Tachograph is not in calibration mode and b) the vehicle is moving.
4.4.4 External GNSS facility certificate expired
GNS_31If the VU detects that the EGF certificate used for mutual authentication is not valid any longer, the VU shall generate and record a recording equipment fault of typeEventFaultType enum ‘56’H External GNSS facility certificate expired with a timestamp equal to the current value of time. The VU shall still use the received GNSS position data.
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