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) (c. 799)

ANNEX I C U.K. Requirements for construction, testing, installation, and inspection

Appendix 2

TACHOGRAPH CARDS SPECIFICATION U.K.

3. HARDWARE AND COMMUNICATION U.K.

3.2. Transmission Protocol U.K.

3.2.1 Protocols U.K.

TCS_16 T=1 U.K.

• NAD byte: not used (NAD shall be set to ‘00’).

• S-block ABORT: not used.

• S-block VPP state error: not used.

• The total chaining length for a data field will not exceed 255 bytes (to be ensured by the IFD).

• The Information Field Size Device (IFSD) shall be indicated by the IFD immediately after the ATR: the IFD shall transmit the S-Block IFS request after the ATR and the card shall send back S-Block IFS. The recommended value for IFSD is 254 bytes.

• The card will not ask for an IFS readjustment.