Bsi bs en 14116 2012 + a1 2014

Key Components: 1 electronic circuit ST modulating switch IL supply current without modulation ITD supply current amplitude Figure 3 — Basic circuit diagram of PID 5.2 Temperature rang

BSI Standards Publication

Tanks for transport of dangerous goods — Digital interface for product

recognition devices for liquid fuels

EN 14116:2012+A1:2014 It supersedes BS EN 14116:2012 which is withdrawn.

The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by 

The UK participation in its preparation was entrusted to Technical Committee AUE/18, Tanks for the transport of dangerous goods

A list of organizations represented on this committee can be obtained

on request to its secretary

This publication does not purport to include all the necessary provisions

of a contract Users are responsible for its correct application

© The British Standards Institution 2014

Published by BSI Standards Limited 2014ISBN 978 0 580 84966 4

Amendments/corrigenda issued since publication

Date Text affected

31 October 2014 Implementation of CEN amendment A1:2014

NORME EUROPÉENNE

English Version

Tanks for transport of dangerous goods - Digital interface for

product recognition devices for liquid fuels

Citernes destinées au transport de matières dangereuses

-Interface numérique du dispositif de reconnaissance de

produits pétroliers

Tanks für die Beförderung gefährlicher Güter - Digitale Schnittstelle für das Produkterkennungssystem für flüssige

Kraft- und Brennstoffe

This European Standard was approved by CEN on 1 September 2012 and includes Amendment 1 approved by CEN on 7 August 2014 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M IT É E U R OP É E N D E N O RM A LIS A T IO N EURO PÄ ISC HES KOM ITE E FÜR NORM UNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members Ref No EN 14116:2012+A1:2014 E

Contents Page

Foreword 4

Introduction 5

1 Scope 6

2 Normative references 6

3 Terms, definitions and abbreviations 6

3.1 Terms and definitions 6

3.2 Abbreviations 7

4 Functions 8

5 Design characteristics 9

5.1 General 9

5.2 Temperature range 10

5.3 Materials of construction 10

5.4 PRD 10

5.5 PID 11

5.5.1 General specification 11

5.5.2 Diode and ESD protection 12

5.6 Contact and insulation resistances 13

5.7 Electrical requirements for hoses 13

5.8 System architecture of MultiPID 14

5.9 Electrical design characteristic of MultiPID 14

5.9.1 Technical description of MultiPID 14

5.9.2 Modulation for the bi-directional communication 16

5.9.3 Message timing 17

6 Protocol structure 18

6.1 Telegram transmission sequences 18

6.2 Bit coding 19

6.3 Byte frame 20

6.4 Byte sequence in multibyte variables 20

6.5 Telegram 20

6.6 Message format 20

6.6.1 Format of messages #1 to #32 20

6.6.2 Format of messages #33 to #255 21

6.7 Message specification 21

6.7.1 Reserved messages 21

6.7.2 Other messages 21

6.7.3 Message #1: Product description and overfill status (depot/station to truck) 21

6.7.4 Message #2 Location and product details (depot/station to truck) 23

6.7.5 Message #3 Multi product loading arm (depot to truck) 25

6.7.6 Message #4 Tank properties (station to truck) 26

6.7.7 Message #5 Rack meter information (depot to truck) 26

6.7.8 Message #6 Loading information (truck to depot) 27

6.7.9 Message #7 Delivery information (truck to station) 28

6.7.10 Message #8 Station information (station to truck) 29

6.7.11 Message #9 Acknowledge (depot to truck) 30

6.7.12 Message #10 Return product information (truck to return station) 30

6.7.13 Message #32 CRC 16 30

7 Tests 31

Contents Page

Foreword 4

Introduction 5

1 Scope 6

2 Normative references 6

3 Terms, definitions and abbreviations 6

3.1 Terms and definitions 6

3.2 Abbreviations 7

4 Functions 8

5 Design characteristics 9

5.1 General 9

5.2 Temperature range 10

5.3 Materials of construction 10

5.4 PRD 10

5.5 PID 11

5.5.1 General specification 11

5.5.2 Diode and ESD protection 12

5.6 Contact and insulation resistances 13

5.7 Electrical requirements for hoses 13

5.8 System architecture of MultiPID 14

5.9 Electrical design characteristic of MultiPID 14

5.9.1 Technical description of MultiPID 14

5.9.2 Modulation for the bi-directional communication 16

5.9.3 Message timing 17

6 Protocol structure 18

6.1 Telegram transmission sequences 18

6.2 Bit coding 19

6.3 Byte frame 20

6.4 Byte sequence in multibyte variables 20

6.5 Telegram 20

6.6 Message format 20

6.6.1 Format of messages #1 to #32 20

6.6.2 Format of messages #33 to #255 21

6.7 Message specification 21

6.7.1 Reserved messages 21

6.7.2 Other messages 21

6.7.3 Message #1: Product description and overfill status (depot/station to truck) 21

6.7.4 Message #2 Location and product details (depot/station to truck) 23

6.7.5 Message #3 Multi product loading arm (depot to truck) 25

6.7.6 Message #4 Tank properties (station to truck) 26

6.7.7 Message #5 Rack meter information (depot to truck) 26

6.7.8 Message #6 Loading information (truck to depot) 27

6.7.9 Message #7 Delivery information (truck to station) 28

6.7.10 Message #8 Station information (station to truck) 29

6.7.11 Message #9 Acknowledge (depot to truck) 30

6.7.12 Message #10 Return product information (truck to return station) 30

6.7.13 Message #32 CRC 16 30

7 Tests 31

7.1 Type test 31

7.1.1 General 31

7.1.2 PID 31

7.1.3 PRD function test 34

7.1.4 Test results 36

7.2 Production test 36

7.2.1 General 36

7.2.2 PID static test 36

7.2.3 PID function test 36

7.2.4 PRD function test 36

7.2.5 Test results 36

8 Marking 37

9 Installation, operating and maintenance recommendations 37

Annex A (informative) Manufacturer ID 38

Annex B (normative) Calculation algorithm for CRC 16 39

Annex C (informative) A-deviations 40

Annex D (normative) Company code 41

D.1 Reason for the company code 41

D.2 Host of the list 41

D.3 Website 41

D.4 Rules 41

D.4.1 General 41

D.4.2 Preliminary registration 41

D.4.3 Access to “Oil Company code” table 41

D.4.4 Registration of a new company code 41

D.4.5 Automatic notification of changes 42

Bibliography 43

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights This document supersedes !EN 14116:2012"

This document includes Amendment 1 approved by CEN on 2014-08-07

The start and finish of text introduced or altered by amendment is indicated in the text by tags !"

!deleted text"

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

Foreword

This document (EN 14116:2012+A1:2014) has been prepared by Technical Committee CEN/TC 296 “Tanks

for transport of dangerous goods”, the secretariat of which is held by AFNOR

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by March 2015, and conflicting national standards shall be withdrawn at

the latest by March 2015

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights

This document supersedes !EN 14116:2012"

This document includes Amendment 1 approved by CEN on 2014-08-07

The start and finish of text introduced or altered by amendment is indicated in the text by tags !"

!deleted text"

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

CEN takes no position concerning the evidence, validity and scope of this patent right

The holder of this patent right has assured the CEN that he is willing to negotiate licences either free of charge

or under reasonable and non-discriminatory terms and conditions with applicants throughout the world In this respect, the statement of the holder of this patent right is registered with CEN Information may be obtained from:

FMC Technologies F.A Sening GmbH Regentstrasse 1 D-25474 Ellerbek Germany

Phone: +49-4101 304-0 Fax: +49-4101-304-133 / 255 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above CEN shall not be held responsible for identifying any or all such patent rights

CEN (http://www.cen.eu/cen/WorkArea/IPR/Pages/default.aspx) and CENELEC (http://www.cenelec.eu/membersandexperts/toolsandapplications/index.html ) maintain on-line lists of patents relevant to their standards Users are encouraged to consult the lists for the most up to date information concerning patents

1 Scope

This European Standard covers the digital interface at the product loading and/or discharge coupling which is used for the transfer of product related information and specifies the performance requirements, critical safety aspects and tests to provide compatibility of devices

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies

EN 13616:2004, Overfill prevention devices for static tanks for liquid petroleum fuels

EN 15208, Tanks for transport of dangerous goods — Sealed parcel delivery systems — Working principles and interface specifications

EN 60079-0, Explosive atmospheres — Part 0: Equipment — General requirements (IEC 60079-0)

EN 60079-11, Explosive atmospheres — Part 11: Equipment protection by intrinsic safety "i" (IEC 60079-11) ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection

ISO 8601, Data elements and interchange formats — Information interchange — Representation of dates and times

3 Terms, definitions and abbreviations

3.1 Terms and definitions

For the purposes of this document, the following terms and definitions apply

1 Scope

This European Standard covers the digital interface at the product loading and/or discharge coupling which is

used for the transfer of product related information and specifies the performance requirements, critical safety

aspects and tests to provide compatibility of devices

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application For dated references, only the edition cited applies For undated references,

the latest edition of the referenced document (including any amendments) applies

EN 13616:2004, Overfill prevention devices for static tanks for liquid petroleum fuels

EN 15208, Tanks for transport of dangerous goods — Sealed parcel delivery systems — Working principles

and interface specifications

EN 60079-0, Explosive atmospheres — Part 0: Equipment — General requirements (IEC 60079-0)

EN 60079-11, Explosive atmospheres — Part 11: Equipment protection by intrinsic safety "i" (IEC 60079-11)

ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by

acceptance quality limit (AQL) for lot-by-lot inspection

ISO 8601, Data elements and interchange formats — Information interchange — Representation of dates and

times

3 Terms, definitions and abbreviations

3.1 Terms and definitions

For the purposes of this document, the following terms and definitions apply

Ii

according to EN 60079-11

3.1.6 maximum output current

I0

according to EN 60079-11

3.1.7 maximum input power

Pi

according to EN 60079-11

3.1.8 maximum output power

P0

according to EN 60079-11

3.1.9 maximum internal capacitance

Ci

according to EN 60079-11

3.1.10 maximum internal inductance

Li

according to EN 60079-11

3.1.11 Multiple Product Identification Device MultiPID

electronic device emulating at least one PID, extended by the ability of bi-directional communication

3.2 Abbreviations

For the purposes of this document, the following abbreviations apply

— ASCII American Standard Code for Information Interchange

— CPDP Comité Professionnel Du Pétrole

— ESD Electro-Static Discharge

— LSB Least Significant Bit

— MSB Most Significant Bit

— PID Product Identification Device

— PRD Product Recognition Device

— RON Research Octane Number

Whenever a physical connection according to Figure 1 or Figure 2 is made, the digital interface enables the transfer of product recognition data to the transport tank The purpose of this digital interface is to provide the data for the following types of applications:

a) automatic product identification for each compartment or tank;

b) cross over prevention;

!c) overfill prevention (optional)."

Bi-directionality may add the ability of communication between the stationary parts and the tank vehicle, e.g the transfer of data of measured quantities in both directions

Key

1 pipework of loading arm with insulated coupling

2 pipework of transport tank with insulated coupling

4 Functions

Whenever a physical connection according to Figure 1 or Figure 2 is made, the digital interface enables the

transfer of product recognition data to the transport tank The purpose of this digital interface is to provide the

data for the following types of applications:

a) automatic product identification for each compartment or tank;

b) cross over prevention;

!c) overfill prevention (optional)."

Bi-directionality may add the ability of communication between the stationary parts and the tank vehicle, e.g

the transfer of data of measured quantities in both directions

Key

1 pipework of loading arm with insulated coupling

2 pipework of transport tank with insulated coupling

1 pipework of transport tank with insulated coupling

2 conductive hoses b and pipework of stationary tank with insulated couplings

a required, if only one connection is established

b if the discharge hoses are not conductive then the conductivity of these hoses shall be achieved by other means

Figure 2 — Unloading

PRD supplies an intrinsically safe circuit

5 Design characteristics 5.1 General

The PRD shall be located on the transport tank The PID shall be connected in series to a current loop with the PRD

The PRD reads the PID by powering the PID through the hose or loading arm The PID then sends its data by modulating the supply current, which is sensed by the PRD; see Figure 3

The PID sends its data, using messages, which are numbered from 1 to 255

The PID always transmits "message #1" By implementing more messages, it is possible to program the PID with other types of information; see 6.6

Since the PID modulates the supply current, PIDs shall not be connected in parallel

Key

Components:

1 electronic circuit

ST modulating switch

IL supply current without modulation

ITD supply current amplitude

Figure 3 — Basic circuit diagram of PID

5.2 Temperature range

Unless otherwise specified, the operating temperature range shall be - 20 °C to + 50 °C

Where the product recognition device is subjected to temperatures outside the specified temperature range, all applicable temperature values shall be extended All other requirements shall remain unchanged

5.3 Materials of construction

The manufacturer shall provide with the equipment a full material specification for those parts, which may come into contact with the substances according to Clause 1

5.4 PRD

The PRD shall provide an intrinsically safe power supply with the values according to Table 1 to the PID

Table 1 — DC electrical characteristics of PRD Parameter Unit Min Nom Max Ex-values a

Open-circuit voltage V 11 12 15 U0 = 15 Short-circuit current mA - - 300 I0 = 300 Output power W - - 1,1 P0 = 1,1

a

Maximum value to ensure compliance with EN 60079-11

Explosive protection shall be at least Ex ia IIA according to EN 60079-0 and EN 60079-11

Key

Components:

1 electronic circuit

ST modulating switch

IL supply current without modulation

ITD supply current amplitude

Figure 3 — Basic circuit diagram of PID

5.2 Temperature range

Unless otherwise specified, the operating temperature range shall be - 20 °C to + 50 °C

Where the product recognition device is subjected to temperatures outside the specified temperature range,

all applicable temperature values shall be extended All other requirements shall remain unchanged

5.3 Materials of construction

The manufacturer shall provide with the equipment a full material specification for those parts, which may

come into contact with the substances according to Clause 1

5.4 PRD

The PRD shall provide an intrinsically safe power supply with the values according to Table 1 to the PID

Table 1 — DC electrical characteristics of PRD Parameter Unit Min Nom Max Ex-values a

Open-circuit voltage V 11 12 15 U0 = 15 Short-circuit current mA - - 300 I0 = 300 Output power W - - 1,1 P0 = 1,1

a

Maximum value to ensure compliance with EN 60079-11

Explosive protection shall be at least Ex ia IIA according to EN 60079-0 and EN 60079-11

5.5 PID

5.5.1 General specification

Explosion protection shall be at least Ex ia IIA according to EN 60079-0 and EN 60079-11

Table 2 — DC electrical characteristics of PID Parameter Symbol Unit Min Nom Max Ex-values a

Supply current without modulation IL mA 0 5 10 Ii = 300

Supply current at U+ < 3 V IOFF mA - - 5 -

Maximum internal capacitance Ci nF - - - = 600 Maximum internal inductance Li µH - - - = 10

a

Maximum value to ensure compliance with EN 60079-11

Table 3 — AC electrical characteristics of PID Parameter Symbol Unit Min Nom Max

Supply current amplitude ITD mA 10 15 20

Rise time of output signal tTr µs 0 - 30 Fall time of output signal tTf µs 0 - 30 Transmission delay after power on tTds ms 0 - 0,9 The timing diagram of PID is shown in Figure 4

Key

t0 t at power ON tTf fall time of output signal

t1, t4, t5 = t at i = IL + 10 % ITD tTr rise time of output signal

Figure 4 — Timing diagram of PID 5.5.2 Diode and ESD protection

To maintain ESD protection, a resistor has to be implemented into the PID; see Figure 5 and Table 4

Key

t0 t at power ON tTf fall time of output signal

t1, t4, t5 = t at i = IL + 10 % ITD tTr rise time of output signal

Figure 4 — Timing diagram of PID 5.5.2 Diode and ESD protection

To maintain ESD protection, a resistor has to be implemented into the PID; see Figure 5 and Table 4

Figure 5 — PID schematic wiring diagram

Table 4 — Diode and ESD protection Parameter Symbol Unit Min Max

Resistance of ESD resistor R kΩ 100 300

Diode D forward current ID mA 300 -

Diode D forward voltage at ID < 50 mA UD V - 1

5.6 Contact and insulation resistances

The contact and insulation resistances shall be according to Table 5

Table 5 — Contact and insulations resistances Parameter Symbol Unit Min Max

Closed loop resistance for PRD design b RLD Ω - 100

5.7 Electrical requirements for hoses

The electrical requirements for hoses used for loading and unloading shall be according to Table 6

Hose design should minimise the built up of electrical charge during product flow

Table 6 — Electrical requirements for hoses

Resistance between the couplings (end to end)a Ω 0 5 Resistance between signal path and the external

Inductance between the couplings (end to end)a mH 0 0,4

a These parameters are for single hoses and combinations of hoses, when the combination is used to make a single hose These parameters shall also include the signal return line

b Hose coupling to ground or signal return path

c Measurement surrounding/measurement condition: clamp DN 78, 20 mm wide, tighten, preferable full-faced bearing For other nominal diameters (DN) the clamp shall be coextensive, so appropriate smaller or expanded

"

The system architecture shall be according to Figure 6

Figure 6 — Systematic of MultiPID

5.9 Electrical design characteristic of MultiPID

5.9.1 Technical description of MultiPID

The principle block diagram of MultiPID is given in Figure 7

The electrical characteristics of MultiPID are according to Table 7

The operational data of MultiPID is according to Figure 8

Details of the operation of a MultiPID is described in EN 15208

5.8 System architecture of MultiPID

The system architecture shall be according to Figure 6

Figure 6 — Systematic of MultiPID

5.9 Electrical design characteristic of MultiPID

5.9.1 Technical description of MultiPID

The principle block diagram of MultiPID is given in Figure 7

The electrical characteristics of MultiPID are according to Table 7

The operational data of MultiPID is according to Figure 8

Details of the operation of a MultiPID is described in EN 15208

Key

1 modulator

2 reader

3 microprocessor

4 recommended host interface ia

Cn isolated coupling (product/vapour recovery)

Pn port

a required, if only one connection is established

Figure 7 — Multi-PID principle block diagram

Table 7 — Electrical characteristics Relevant for Functional block Parameter Symbol Unit min max

PID Current modulation Supply current without modulation IL mA - 10

PRD Voltage modulation Voltage difference for modulation ΔUM V ± 0,5 ± 1,5

Common Ambient temperature Temperature T °C - 25 + 60

Key

1 bit stream sent by Multi-PID

2 current modulated by Multi-PID (Manchester code)

3 voltage modulated by PRD (level code)

4 sampling interval of Multi-PID retrieving bit stream from PRD

Key

1 bit stream sent by Multi-PID

2 current modulated by Multi-PID (Manchester code)

3 voltage modulated by PRD (level code)

4 sampling interval of Multi-PID retrieving bit stream from PRD

The communication between PRD and Multi-PID shall be of the type "full duplex" i.e while MultiPID is talking,

PRD sends its message to MultiPID Both shall be able to read the messages

The current modulation by MultiPID shall result in a voltage modulation in PRD, due to its internal serial

resistor MultiPID shall be able to differentiate this from the modulation of the supply voltage performed by

PRD Therefore MultiPID shall measure the voltage changes caused by its own current modulation PRD shall

start its transmission not before the end of the start bit of the MultiPID and synchronously to the current

modulation of MultiPID MultiPID shall check the voltages synchronously to its own transmission and shall subtract the voltage change before its own check, i.e it shall recognise the bits transmitted by the PRD

5.9.3 Message timing

The scan period shall be the repetition time until a scan line is powered up again by PRD

Power on time shall be the time a particular scan line is powered up by PRD

During the entire power-on time, the telegram sent by MultiPID shall be repeated

During each power-on time, not more than one telegram shall be transmitted by PRD This telegram shall contain only one message or two messages on condition that the second message is the CRC message #32 Power-on time shall be sufficient to either recognise the existence of an electrical connection or:

a) recognise at least the content of the first received telegram, and b) transmit the telegram from PRD to MultiPID, if necessary, and c) if a telegram requires an acknowledgement from the MultiPID, until the acknowledgement has been received

For details see Figure 9

Key

ACK acknowledgement of telegram from PRD

Figure 9 — Message timing

Whenever a connection of hose or loading arm is made, MultiPID shall send at least message #1 in a telegram, as long as the MultiPID is powered via this connection If the telegram contains an acknowledged message, message #1 may not be included

6 Protocol structure

6.1 Telegram transmission sequences

The PID shall start sending its telegram(s) after a power on delay until power is removed (see Figure 10 and Table 3) The telegram(s) shall be continuously transmitted without any gap

Key

ACK acknowledgement of telegram from PRD

Figure 9 — Message timing

Whenever a connection of hose or loading arm is made, MultiPID shall send at least message #1 in a

telegram, as long as the MultiPID is powered via this connection If the telegram contains an acknowledged

message, message #1 may not be included

6 Protocol structure

6.1 Telegram transmission sequences

The PID shall start sending its telegram(s) after a power on delay until power is removed (see Figure 10 and

Table 3) The telegram(s) shall be continuously transmitted without any gap

Nominal values:

clock frequency = 4 880 Hz baud rate = 2 440 Bits/s duty cycle = 50 %

The LSB of each Byte shall be sent first The MSB shall be followed by an even parity bit; see Table 8

Table 8 — Byte frame

—————→ time

6.4 Byte sequence in multibyte variables

The most significant byte shall be sent first

The first Byte sent shall be a single Byte (unsigned) specifying the number of Bytes to follow, i.e the number

of Bytes within the Data Block plus one for the checksum Byte

— Data Block

The Data Block shall hold the application data It may contain more than one message

If a Data Block contains more than one message, the messages shall be sent in ascending order of message numbers That means message #1 first, followed by e.g message #2, message #5, message #n

6.3 Byte frame

The LSB of each Byte shall be sent first The MSB shall be followed by an even parity bit; see Table 8

Table 8 — Byte frame

—————→ time

6.4 Byte sequence in multibyte variables

The most significant byte shall be sent first

The first Byte sent shall be a single Byte (unsigned) specifying the number of Bytes to follow, i.e the number

of Bytes within the Data Block plus one for the checksum Byte

— Data Block

The Data Block shall hold the application data It may contain more than one message

If a Data Block contains more than one message, the messages shall be sent in ascending order of message

numbers That means message #1 first, followed by e.g message #2, message #5, message #n

— Checksum

The checksum shall be the least significant Byte of the arithmetic unsigned binary sum of previously sent

Bytes of the telegram starting with the Block Length Byte

6.6 Message format

6.6.1 Format of messages #1 to #32

The structure of message #1 to #32 shall be in accordance with Table 10

Table 10 — Format of messages #1 to #32

1 Byte Header n Bytes of Data (length according to Tables 12 to 22) These messages start with a one Byte unsigned header as a unique message identifier The data of these messages immediately follow the header

6.6.2 Format of messages #33 to #255

The structure of all other messages shall be in accordance with Table 11

Table 11 — Format of messages #33 to #255

1 Byte Header Length Byte (n) n Bytes of Data

6.7 Message specification

6.7.1 Reserved messages

The message identifiers from 1 to 32 are reserved for the purposes of this European Standard

Since the total length of a telegram is limited to 254 Bytes, the total length of all reserved messages within a telegram is limited to 127 Bytes

6.7.2 Other messages

Message identifiers from 33 to 255 may be used for other purposes

The total length of all messages with this group of identifiers is limited to 127 Bytes

6.7.3 Message #1: Product description and overfill status (depot/station to truck)

The PID always contains message #1 according to Table 12 This message shall be sent by all PIDs

Table 12 — Message #1 (1 of 2) Field Name Field Size Contents Description

Header 1 Byte 0000 0001 b Identification for message #1

Serial Number 3 Bytes - Unique serial number

Type and Variable 1 Byte xxxx xx00 b

xxxx xx01 b xxxx xx10 b xxxx xx11 b

Overfill protection information not available Overfill protection information: Sensor defect Overfill protection information: No overfill Overfill protection information: Overfill

xxxx 01xx b xxxx 10xx b xxxx 11xx b

Vapour recovery according to SETUP of truck (not used)

Vapour recovery not necessary Vapour recovery necessary Content of all other bits marked with "x" shall be ignored, but are reserved for compatibility reasons