ISO 11992-3:2003/Amd 1:2008
(Amendment)Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 3: Application layer for equipment other than brakes and running gear — Amendment 1
Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 3: Application layer for equipment other than brakes and running gear — Amendment 1
Véhicules routiers — Échange d'informations numériques sur les connexions électriques entre véhicules tracteurs et véhicules tractés — Partie 3: Couche d'application pour les équipements autres que les équipements de freinage et les organes de roulement — Amendement 1
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11992-3
Second edition
2003-04-15
AMENDMENT 1
2008-02-15
Road vehicles — Interchange of digital
information on electrical connections
between towing and towed vehicles —
Part 3:
Application layer for equipment other
than brakes and running gear
AMENDMENT 1
Véhicules routiers — Échange d'informations numériques sur les
connexions électriques entre véhicules tracteurs et véhicules tractés —
Partie 3: Couche d'application pour les équipements autres que les
équipements de freinage et les organes de roulement
AMENDEMENT 1
Reference number
ISO 11992-3:2003/Amd.1:2008(E)
©
ISO 2008
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ISO 11992-3:2003/Amd.1:2008(E)
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ii © ISO 2008 – All rights reserved
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ISO 11992-3:2003/Amd.1:2008(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 11992-3:2003 was prepared by Technical Committee ISO/TC 22, Road vehicles,
Subcommittee SC 3, Electrical and electronic equipment.
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ISO 11992-3:2003/Amd.1:2008(E)
Road vehicles — Interchange of digital information on electrical
connections between towing and towed vehicles —
Part 3:
Application layer for equipment other than brakes and running
gear
AMENDMENT 1
Page iv, Foreword, 7th paragraph
Replace the list of parts with the following.
⎯ Part 1: Physical and data-link layers
⎯ Part 2: Application layer for brakes and running gear
⎯ Part 3: Application layer for equipment other than brakes and running gear
⎯ Part 4: Diagnostics
Page 1, Clause 2
Replace the entire list of normative references with the following new list.
ISO 11898 (all parts), Road vehicles — Controller area network (CAN)
ISO 11992-1, Road vehicles — Interchange of digital information on electrical connections between towing
and towed vehicles — Part 1: Physical and data-link layers
Page 5, 6.2, 5th paragraph, 2nd sentence
Delete the following sentence: “To avoid any transmission conflict during the dynamic address assignment
phase (power-up), the PDU 2 type message shall have even PS (GE) in the predecessor transmission
direction and odd PS (GE) in the successor transmission direction”.
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ISO 11992-3:2003/Amd.1:2008(E)
Page 7, 6.3, Figure 9
Replace the existing figure with the following new figure.
Figure 9 — Example of PDU 2 type message from towed vehicle #2
Page 25
Insert the following new subclauses immediately after 6.4.2.88.
6.4.2.89 Seconds
Part of a parameter used to represent time.
Data length: 1 byte
Resolution: 0,25 s/bit, 0 s offset
Data range: 0 s to 59,75 s
Type: Measured
6.4.2.90 Minutes
Part of a parameter used to represent time.
Data length: 1 byte
Resolution: 1 min/bit, 0 min offset
Data range: 0 min to 59 min
Type: Measured
6.4.2.91 Hours
Part of a parameter used to represent time.
Data length: 1 byte
Resolution: 1 h/bit, 0 h offset
Data range: 0 h to 23 h
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.92 Day
Part of a parameter used to represent a calendar date.
Data length: 1 byte
Resolution: 0,25 days/bit, 0 day offset
Data range: 0 day to 31,75 days
Type: Measured
NOTE 1 A value of 0 for the date is null. The values 1, 2, 3, and 4 are used to identify the first day of the month; 5, 6, 7
and 8 identify the second day of the month; etc.
NOTE 2 This parameter does not influence or change the hours parameter above.
6.4.2.93 Month
Part of a parameter used to represent a calendar date.
Data length: 1 byte
Resolution: 1 month/bit, 0 offset
Data range: 1 month to 12 months
Type: Measured
NOTE A value of 0 for the month is null. The value 1 identifies January; 2 identifies February; etc.
6.4.2.94 Year
Part of a parameter used to represent a calendar date.
Data length: 1 byte
Resolution: 1 year/bit, 1 985 years offset
Data range: 1985 to 2 235 years
Type: Measured
NOTE A value of 0 for the year identifies the year 1985; a value of 1 identifies 1986; etc.
6.4.2.95 Local Minute Offset
Local offset in minutes from a reference time.
Data length: 1 byte
Resolution:
1 min/bit, −125 min offset
Data range:
− 59 min to + 59 min
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.96 Local Hour Offset
Local offset in hours from a reference time.
Data length: 1 byte
Resolution: 1 h/bit, -125 h offset
Data range:
− 24 h to + 23 h
Type: Measured
6.4.2.97 Trailer left-hand stop light(s) command
Command signal to activate the trailer left-hand stop light(s).
00 — Trailer left-hand stop light(s) off
01 — Trailer left-hand stop light(s) on
Type: Status
6.4.2.98 Trailer right-hand stop light(s) command
Command signal to activate the trailer right-hand stop light(s).
00 — Trailer right-hand stop light(s) off
01 — Trailer right-hand stop light(s) on
Type: Status
6.4.2.99 Trailer left-hand direction indicator light(s) command
Command signal to activate the trailer left-hand direction indicator light(s).
00 — Trailer left-hand direction indicator light(s) off
01 — Trailer left-hand direction indicator light(s) on
Type: Status
6.4.2.100 Trailer right-hand direction indicator light(s) command
Command signal to activate the trailer right-hand direction indicator light(s).
00 — Trailer right-hand direction indicator light(s) off
01 — Trailer right-hand direction indicator light(s) on
Type: Status
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.101 Trailer left-hand rear light(s) command
Command signal to activate the trailer left-hand rear light(s).
00 — Trailer left-hand rear light(s) off
01 — Trailer left-hand rear light(s) on
Type: Status
6.4.2.102 Trailer right-hand rear light(s) command
Command signal to activate the trailer right-hand rear light(s).
00 — Trailer right-hand rear light(s) off
01 — Trailer right-hand rear light(s) on
Type: Status
6.4.2.103 Trailer left-hand rear fog light(s) command
Command signal to activate the trailer left-hand rear fog light(s).
00 — Trailer left-hand rear fog light(s) off
01 — Trailer left-hand rear fog light(s) on
Type: Status
6.4.2.104 Trailer right-hand rear fog light(s) command
Command signal to activate the trailer right-hand rear fog light(s).
00 — Trailer right-hand rear fog light(s) off
01 — Trailer right-hand rear fog light(s) on
Type: Status
6.4.2.105 Trailer left-hand reversing light(s) command
Command signal to activate the trailer left-hand reversing light(s).
00 — Trailer left-hand reversing light(s) off
01 — Trailer left-hand reversing light(s) on
Type: Status
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.106 Trailer right-hand reversing light(s) command
Command signal to activate the trailer right-hand reversing light(s).
00 — Trailer right-hand reversing light(s) off
01 — Trailer right-hand reversing light(s) on
Type: Status
6.4.2.107 Trailer left-hand side marker light(s) command
Command signal to activate the trailer left-hand side marker light(s).
00 — Trailer left-hand side marker light(s) off
01 — Trailer left-hand side marker light(s) on
Type: Status
6.4.2.108 Trailer right-hand side marker light(s) command
Command signal to activate the trailer right-hand side marker light(s).
00 — Trailer right-hand side marker light(s) off
01 — Trailer right-hand side marker light(s) on
Type: Status
6.4.2.109 Trailer left-hand rear width indicator light(s) command
Command signal to activate the trailer left-hand rear width indicator light(s).
00 — Trailer left-hand rear width indicator light(s) off
01 — Trailer left-hand rear width indicator light(s) on
Type: Status
6.4.2.110 Trailer right-hand rear width indicator light(s) command
Command signal to activate the trailer right-hand rear width indicator light(s).
00 — Trailer right-hand rear width indicator light(s) off
01 — Trailer right-hand rear width indicator light(s) on
Type: Status
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.111 Trailer left-hand corner marker light(s) command
Command signal to activate the trailer left-hand rear width indicator light(s).
00 — Trailer left-hand corner marker light(s) off
01 — Trailer left-hand corner marker light(s) on
Type: Status
6.4.2.112 Trailer right-hand corner marker light(s) command
Command signal to activate the trailer right-hand rear width indicator light(s).
00 — Trailer right-hand corner marker light(s) off
01 — Trailer right-hand corner marker light(s) on
Type: Status
6.4.2.113 Trailer left-hand rear registration-plate light(s) command
Command signal to activate the trailer left-hand registration-plate light(s).
00 — Trailer left-hand rear registration-plate light(s) off
01 — Trailer left-hand rear registration-plate light(s) on
Type: Status
6.4.2.114 Trailer right-hand rear registration-plate command light(s)
Command signal to activate the trailer right-hand registration-plate light(s).
00 — Trailer right-hand rear registration-plate light(s)
off
01 — Trailer right-hand rear registration-plate light(s)
on
Type: Status
6.4.2.115 Trailer rear warning light(s) command
Command signal to activate the trailer rear warning light(s).
00 — Trailer rear warning light(s) off
01 — Trailer rear warning light(s) on
Type: Status
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.116 Trailer rotating identification light(s) command
Command signal to activate the trailer rotating identification light(s).
00 — Trailer rotating identification light(s) off
01 — Trailer rotating identification light(s) on
Type: Status
6.4.2.117 Trailer interior light(s) command
Command signal to activate the trailer interior light(s).
00 — Trailer interior light(s) off
01 — Trailer interior light(s) on
Type: Status
6.4.2.118 Trailer work light(s) command
Command signal to activate the trailer work light(s).
00 — Trailer work light(s) off
01 — Trailer work light(s) on
Type: Status
6.4.2.119 Trailer left-hand stop light(s) redundancy function
This signal indicates whether a redundancy function for the trailer left-hand stop light function is activated. The
status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
6.4.2.120 Trailer right-hand stop light(s) redundancy function
This signal indicates whether a redundancy function for the trailer right-hand stop light function is activated.
The status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.121 Trailer left-hand direction indicator light(s) redundancy function
This signal indicates whether a redundancy function for the trailer left-hand direction indicator light function is
activated. The status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
6.4.2.122 Trailer right-hand direction indicator light(s) redundancy function
This signal indicates whether a redundancy function for the trailer right-hand direction indicator light function is
activated. The status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
6.4.2.123 Trailer left-hand rear light(s) redundancy function
This signal indicates whether a redundancy function for the trailer left-hand rear light function is activated. The
status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
6.4.2.124 Trailer right-hand rear light(s) redundancy function
This signal indicates whether a redundancy function for the trailer right-hand rear light function is activated.
The status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
6.4.2.125 Trailer left-hand reversing light(s) redundancy function
This signal indicates whether a redundancy function for the trailer left-hand reversing light function is
activated. The status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.126 Trailer right-hand reversing light(s) redundancy function
This signal indicates whether a redundancy function for the trailer right-hand reversing light function is
activated. The status of the light function used for replacement is not affected.
00 — A redundancy function is not activated
01 — A redundancy function is activated
Type: Measured
6.4.2.127 Transmission output shaft PTO feedback
Signal which indicates the current state of the transmission output shaft PTO.
00 — Not engaged
01 — Engaged
Type: Measured
6.4.2.128 Transfer case output shaft PTO feedback
Signal which indicates the current state of the transfer case output shaft PTO.
00 — Not engaged
01 — Engaged
Type: Measured
6.4.2.129 At least one PTO engaged
Signal which indicates that at least one PTO is engaged.
00 — No PTO engaged
01 — At least one PTO is engaged
Type: Measured
6.4.2.130 Transmission output shaft PTO switch
Signal which indicates the current state of the transmission output shaft PTO switch.
00 — Switched off
01 — Switched on
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.131 Transfer case output shaft PTO switch
Signal which indicates the current state of the transfer case output shaft PTO switch.
00 — Switched off
01 — Switched on
Type: Measured
6.4.2.132 First clutch dependent PTO engagement consent
Signal indicating, if the engagement of the first clutch dependent PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
6.4.2.133 Second clutch dependent PTO engagement consent
Signal indicating, if the engagement of the second clutch dependent PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
6.4.2.134 Clutch independent PTO engagement consent
Signal indicating, if the engagement of the clutch independent PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
6.4.2.135 First engine mounted PTO engagement consent
Signal indicating, if the engagement of the first engine mounted PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.136 Second engine mounted PTO engagement consent
Signal indicating, if the engagement of the second engine mounted PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
6.4.2.137 Transmission output shaft PTO engagement consent
Signal indicating, if the engagement of the transmission output shaft PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
6.4.2.138 Transfer case output shaft PTO engagement consent
Signal indicating, if the engagement of the transfer case output shaft PTO is allowed or not.
00 — Consent not given - PTO drive should not be engaged
01 — Consent given - PTO drive may be engaged
Type: Measured
6.4.2.139 First clutch dependent PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the first clutch dependent PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
6.4.2.140 Second clutch dependent PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the second clutch dependent PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.141 Clutch independent PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the clutch independent PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
6.4.2.142 First engine mounted PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the first engine mounted PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
6.4.2.143 Second engine mounted PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the second engine mounted PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
6.4.2.144 Transmission output shaft PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the transmission output shaft PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
6.4.2.145 Transfer case output shaft PTO engagement consent - trailer
Signal indicating the trailer's consent to the engagement of the transfer case output shaft PTO.
00 — Trailer consent not given - PTO drive should not be engaged
01 — Trailer consent given - PTO drive may be engaged
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.146 Cargo hold temperature 1
The value of temperature 1 measured by the temperature recorder.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 40 °C offset
Data range:
− 40 °C to + 40 °C
Type: Measured
6.4.2.147 Cargo hold temperature 2
The value of temperature 2 measured by the temperature recorder.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 40 °C offset
Data range:
− 40 °C to + 40 °C
Type: Measured
6.4.2.148 Cargo hold temperature 3
The value of temperature 3 measured by the temperature recorder.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 40 °C offset
Data range:
− 40 °C to + 40 °C
Type: Measured
6.4.2.149 Cargo hold temperature 4
The value of temperature 4 measured by the temperature recorder.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 40 °C offset
Data range:
− 40 °C to + 40 °C
Type: Measured
6.4.2.150 Cargo hold temperature 5
The value of temperature 5 measured by the temperature recorder.
Data length: 1 byte
Resolution: 0,5 °C/bit gain, − 40 °C offset
Data range:
− 40°C to + 40°C
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.151 Cargo hold temperature 6
The value of temperature 6 measured by the temperature recorder.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 40 °C offset
Data range:
− 40 °C to + 40 °C
Type: Measured
6.4.2.152 Reefer unit battery voltage
The measured voltage of the reefer unit battery.
Data length: 2 bytes
Resolution: 0,01 V/bit gain, 0 V offset
Data range: 0 V to 642,55 V
Type: Measured
6.4.2.153 Reefer unit fuel tank level
The measured fuel level in the tank of the reefer unit.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
6.4.2.154 Requested evaporator 1 setpoint
Command signal to set the evaporator 1 setpoint.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 50 °C offset
Data range:
− 50 °C to + 50 °C
Type: Status
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.155 Requested evaporator 2 setpoint
Command signal to set the evaporator 2 setpoint.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 50 °C offset
Data range:
− 50 °C to + 50 °C
Type: Status
6.4.2.156 Requested evaporator 3 setpoint
Command signal to set the evaporator 3 setpoint.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 50 °C offset
Data range:
− 50 °C to + 50 °C
Type: Status
6.4.2.157 Evaporator 1 setpoint
The temperature setpoint of evaporator 1.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 50 °C offset
Data range:
− 50 °C to + 50 °C
Type: Measured
6.4.2.158 Evaporator 2 setpoint
The temperature setpoint of evaporator 2.
Data length: 1 byte
Resolution:
0,5 °C/bit gain, − 50 °C offset
Data range:
− 50 °C to + 50 °C
Type: Measured
6.4.2.159 Evaporator 3 setpoint
The temperature setpoint of evaporator 3.
Data length: 1 byte
Resolution: 0,5 °C/bit gain, − 50 °C offset
Data range:
− 50 °C to + 50 °C
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.160 Compartment 1 humidity
The measured air humidity in compartment 1.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
6.4.2.161 Compartment 2 humidity
The measured air humidity in compartment 2.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
6.4.2.162 Compartment 3 humidity
The measured air humidity in compartment 3.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
6.4.2.163 Compartment 1 oxygen concentration
The measured oxygen concentration in compartment 1.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.164 Compartment 2 oxygen concentration
The measured oxygen concentration in compartment 2.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
6.4.2.165 Compartment 3 oxygen concentration
The measured oxygen concentration in compartment 3.
Data length: 1 byte
Resolution: 0,5 %/bit gain, 0 % offset
Data range: 0 % to 125 %
Type: Measured
6.4.2.166 Reefer unit alarm status
Signal to indicate the alarm status of the reefer unit.
000 Reefer unit warning/alarm off
001 Reefer unit warning on
010 Reefer unit shutdown alarm on
011 to 101 Not defined
Type: Measured
6.4.2.167 Status evaporator 1
Signal to indicate the operating status of evaporator 1.
000 Standby
001 Cooling
010 Heating
011 Defrost
100 to 101 Not defined
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.168 Status evaporator 2
Signal to indicate the operating status of evaporator 2.
000 Standby
001 Cooling
010 Heating
011 Defrost
100 to 101 Not defined
Type: Measured
6.4.2.169 Status evaporator 3
Signal to indicate the operating status of evaporator 3.
000 Standby
001 Cooling
010 Heating
011 Defrost
100 to 101 Not defined
Type: Measured
6.4.2.170 Reefer unit status
Signal to indicate the reefer unit status.
00 Reefer unit off
01 Reefer unit on
Type: Measured
6.4.2.171 Reefer unit start/stop operating hours
The total number of hours the reefer unit is in start/stop operating mode.
Data length: 3 bytes
Resolution: 1 h/bit gain, 0 h offset
Data range: 0 h to 16 449 535 h
Type: Measured
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.172 Reefer unit diesel engine operating hours
The total number of hours the reefer unit diesel engine is operating.
Data length: 3 bytes
Resolution: 1 h/bit gain, 0 h offset
Data range: 0 h to 16 449 535 h
Type: Measured
6.4.2.173 Reefer unit line supply operating hours
The total number of hours the reefer unit is supplied from the line supply.
Data length: 3 bytes
Resolution: 1 h/bit gain, 0 h offset
Data range: 0 h to 16 449 535 h
Type: Measured
6.4.2.174 Reefer unit generator operating hours
The total number of hours the reefer unit generator is operating.
Data length: 3 bytes
Resolution: 1 h/bit gain, 0 h offset
Data range: 0 h to 16 449 535 h
Type: Measured
6.4.2.175 Reefer unit on/off
Command signal to turn the reefer unit on or off.
00 Reefer unit off
01 Reefer unit on
Type: Status
6.4.2.176 Reefer unit defrost cycle on/off
Command signal to activate a defrost cycle.
00 Defrost off
01 Defrost on
Type: Status
20 © ISO 2008 – All rights reserved
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ISO 11992-3:2003/Amd.1:2008(E)
6.4.2.177 Cargo hold door 1 contact switch
Signal to indicate the status of the cargo hold door 1.
00 Door closed
01 Door open
Type: Measured
6.4.2.178 Cargo hold door 2 contact switch
Signal to indicate the status of cargo hold door 2.
00 Door closed
01 Door open
Type: Measured
6.4.2.179 Cargo hold door 3 contact switch
Signal to indicate the status of cargo hold door 3.
00 Door closed
01 Door open
Type: Measured
© ISO 2008 – All rights reserved 21
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ISO 11992-3:2003/Amd.1:2008(E)
Page 25, 6.5
Replace the whole of 6.5, including the tables, with the following new subclause.
6.5 Messages
6.5.1 General
The following specifies the messages for use on the electrical connection between towing and towed vehicles.
All undefined bits shall be transmitted with a value of “1”. All undefined bits shall be treated as “don’t care”
(either masked out or ignored). This permits them to be defined and used in the future without causing any
incompatibi
...
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