TECHNICAL DESCRIPTION
Titel/Title:
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D8 SERIAL DATA OUTPUT
1(10)
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Dokumentnr./Document no:
Arne Lohage
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1231_078-990136
Rev:
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7 D8 SERIAL DATA OUTPUT.DOC
D8 SERIAL DATA OUTPUT
Table of contents
1.
2.
3.
4.
5.
DOCUMENT REVISION HISTORY..............................................................................................................1
INTRODUCTION ..........................................................................................................................................2
RELEVANT DOCUMENTS...........................................................................................................................2
INTRODUCTION ..........................................................................................................................................2
OVERVIEW...................................................................................................................................................3
5.1.
Input and Output Pins.............................................................................................................................3
5.2.
Programmable Data ...............................................................................................................................3
6.
SERIAL DATA STREAMS ............................................................................................................................3
6.1.
General Data Parameters ......................................................................................................................3
6.1.1. Transmission Rate .............................................................................................................................3
6.1.2. Data Frame Format............................................................................................................................3
6.1.3. Output Signal Levels..........................................................................................................................3
6.2.
Normal Serial Data Format (SRE Digital Tachograph) ..........................................................................5
6.2.1. Selected Normal Serial Data Bytes Format .......................................................................................5
6.2.1.1.
Message Identifier .....................................................................................................................5
6.2.1.2.
Working State Driver 1&2..........................................................................................................6
6.2.1.3.
Driver 1 State ............................................................................................................................6
6.2.1.4.
Driver 2 State ............................................................................................................................6
6.2.1.5.
Tachograph Status ....................................................................................................................6
6.2.1.6.
Speed/ Speed Authorised .........................................................................................................6
6.2.1.7.
Engine Speed............................................................................................................................7
6.2.1.8.
Additional information................................................................................................................7
6.2.1.9.
Vehicle identification number ....................................................................................................7
6.2.1.10. Driver 1 identification number ...................................................................................................7
6.2.1.11. Driver 2 identification number ...................................................................................................7
6.2.1.12. Vehicle registration number ......................................................................................................7
6.2.1.13. Registering member state .........................................................................................................7
6.3.
Extended Serial Data Format (for 2400 compatibility) ...........................................................................8
6.3.1. Selected Extended Serial Data Bytes Format ...................................................................................9
6.3.1.1.
Description ................................................................................................................................9
6.3.1.2.
Duty/Self Test..........................................................................................................................10
6.3.1.3.
Odometer Data........................................................................................................................10
6.3.1.4.
Time and date .........................................................................................................................10
1. DOCUMENT REVISION HISTORY
Rev: 01
Date of issue: 2008-10-16
Issued by: Arne Lohage
Date of issue:
Issued by:
First issue.
Rev: 02
TECHNICAL DESCRIPTION
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D8 SERIAL DATA OUTPUT
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2. INTRODUCTION
SE5000 will implement two versions of serial data output, the digital version specified in chapter 6.2 and the
2400 extended version specified in chapter 6.3 in this document.
3. RELEVANT DOCUMENTS
The appendices and documents listed below are of essential value for the understanding of this document.
Appendices
No.
Document no.
Title
/1/
/2/
Document
Ref. Document no.
Title
[1]
1123_001-990113 01 EC specification of 1b in english l_20720020805en00010252.pdf
[2]
ISO 16844, 1:st edition.
[3]
4. INTRODUCTION
The purpose of this document is to define the format of the D8 serial data outputs available in the Stoneridge
Electronics Digital Tachograph.
SE5000 supports two formats, Standard SRE output and 2400 output.
- Standard SRE output is according to requirements on the new trucks that listen to D8.
- 2400 output is according to requirements that the old analogue tachograph 2400 had. This means that SE5000
can be configured to support older trucks that listen on D8 instead of CAN. No problem to replace a 2400 with
an SE5000.
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5. OVERVIEW
5.1. Input and Output Pins
The following data pins shall be used to allow the serial data to be accessed correctly.
Rear Board Pin
Description
D8
Serial Data
5.2. Programmable Data
The following data shall be programmed into the unit to allow the serial data to function correctly according to
customer wish.
RecordDataidentifier
D8 Pin Enabled, Serial Data
Output
Hex
FD12
Description
Allows the Serial Data output to have different data
formats.
FD12 = 0x00; Disable D8
FD12 = 0x01; Enable D8, Standard SRE output
FD12 = 0x02; Enable D8, 2400 output
FD12 = 0x03; Disable D8
6. SERIAL DATA STREAMS
A programmable option shall determine the format of data for the serial data stream. There shall be two different
formats, a new one for Stoneridge Electronics Digital Tachograph and one for compatability with 2400 Series
tachograph systems.
Note: References to switch settings are to programming switches in older series tachographs. These settings
have been emulated in the 2400 series tachograph to maintain compatibility with the data streams of these older
series tachograph, though physical switches do not exist in practice. Similarly the overspeed limit setting shall
be indicated in 'pointer steps' to maintain compatibility. The new Stoneridge Electronics Digital Tachograph shall
use data formats based on [1] and [2].
6.1. General Data Parameters
6.1.1. Transmission Rate
Baud rate = 1200 bps (1195 actual).
Inter message time = max 40 ms for Stoneridge Electronics Digital Tachograph.
Repeat time for messages = 500 ms for 2400 compatible serial stream data.
6.1.2. Data Frame Format
11 Bits per frame, consisting of
1 start bit (logic 1)
8 data bits
2 stop bits)
6.1.3. Output Signal Levels
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Logical '0' is 0V from 1.3 kohms.
Logical '1' is +8V from 1.3 kohms.
Note: This signal polarity is inverted compared with standard RS232 signal polarity.
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6.2. Normal Serial Data Format (SRE Digital Tachograph)
This is a new serial data stream for Stoneridge Electronics Digital Tachograph. Its origin is from requirement
153 in reference [1].
All bytes in the serial data stream are sent in Big Endian format.
All parameters are based on ISO16844-7, if nothing else is stated in this document.
The normal serial stream has the following format and data.
1.
A header of 3 sync frames of 0xFF followed by 27.5 ms delay (extended stop bit)
2.
Followed by the bytes of information
a)
Number of bytes in message (45 to 48 depending on message type).
b)
Message Identifier (see section 6.2.1.1)
c)
Date & Time (4 bytes TimeReal)
d)
Working State Driver 1&2 (see section 6.2.1.2)
e)
Driver 1 State (see section 6.2.1.3)
f)
Driver 2 State (see section 6.2.1.4)
g)
Tachograph Status (see section 6.2.1.5)
h)
Speed (2 bytes see section 6.2.1.6)
i)
Vehicle Distance (4 bytes HighResOdometer)
j)
Trip Distance (4 bytes HighResTripDistance)
k)
K-factor (2 bytes K-ConstantOfRecordingEquipment)
l)
Engine Speed (2 bytes see section 6.2.1.7)
m)
Speed Authorised (2 bytes see section 6.2.1.6)
n)
Additional information (see section 6.2.1.8)
o)
Vehicle Identification Number - VIN (18 bytes see section 0)
p)
Driver 1 Identification Number - DIN 1 (20 bytes see section 6.2.1.10)
q)
Driver 2 Identification Number - DIN 2 (20 bytes see section 6.2.1.11)
r)
Vehicle Registration Number - VRN (14 bytes see section 6.2.1.12)
s)
Registering Member State - RMS (3 bytes see section 6.2.1.13)
t)
Check Sum (2's complement)
VIN, DIN1, DIN2 and VRN messages very rarely change, and therefore do not have to be sent all the time. To
reduce the transmission time of the data the serial data will be transmitted as one of 4 sub messages
containing the variable data and one of the VIN, DIN1, DIN2 and VRN parameters. As part of the header a
message ID shall be given to identify which of the VIN, DIN 1, DIN 2 or VRN is being transmitted in the stream.
6.2.1. Selected Normal Serial Data Bytes Format
6.2.1.1. Message Identifier
Bits
0-3
4-7
Name
Message Identifier
Description
0001 – Message containing the VIN
0010 – Message containing the DIN 1
0100 – Message containing the DIN 2
1000 – Message containing the VRN & RMS
0000 – Unused, reserved for future use.
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6.2.1.2. Working State Driver 1&2
Bits
0–2
Name
Driver 1 working state
3–5
Driver 2 working state
6–7
Drive Recognise
Description
000 – Break/Rest
001 – Availability
010 – Work
011 – Driving
100 - 101 – Reserved
000 – Break/Rest
001 – Availability
010 – Work
011 - 101 – Reserved
00 – Vehicle motion not detected
01 – Vehicle motion detected
6.2.1.3. Driver 1 State
Bits
0–3
Name
Driver 1 Time Related
States
4–5
Driver Card, Driver 1
6–7
Overspeed
Description
0000 - No time related warning detected
0001 - Limit #1 : 15 minutes before 4 1/2 h
0010 - Limit #2 : 4 1/2 h reached (continuous driving time
exceeded)
0011 -1100 - Reserved
1101 – Other
00 - Driver Card not present
01 - Driver Card present
00 – No Overspeed
01 - Overspeed
6.2.1.4. Driver 2 State
Bits
0–3
Name
Driver 2 Time Related
States
4–5
Driver Card, Driver 2
6–7
Description
0000 - No time related warning detected
0001 - Reserved
0010 - Reserved
0011 - 1100 - Reserved
1101 - Other
00 - Driver Card not present
01 - Driver Card present
00 – Unused, reserved for future use.
6.2.1.5. Tachograph Status
Bits
0–1
Name
System Event
2–3
Handling Information
4–5
Tachograph
Performance
Direction Indicator
6–7
Description
00 – No Tachograph Event
01 – Tachograph Event
00 – No Handling Information
01 – Handling Information
00 – Normal performance
01 – performance analysis
11 – Not used
6.2.1.6. Speed/ Speed Authorised
Bits
0 – 15
Name
Speed
Description
Range - 0 to 250.996 km/h
Resolution - 1/256 km/h/bit gain, 0 km/h offset
(upper byte resolution = 1.0 km/h/bit)
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6.2.1.7. Engine Speed
Bits
0 – 15
Name
Engine Speed
Description
Range - 0 to 8031,875 rpm
Resolution - 0,125 rpm/bit gain, 0 rpm offset
(upper byte resolution = 32 rpm/bit)
6.2.1.8. Additional information
Bits
0–1
Name
Low Speed
2–3
Pulser disconnect
4–5
Ignition on
6–7
RFU
Description
00 – Vehicle speed is equal or greater than low speed setting
01 – Vehicle speed is less than low speed setting
00 – Speed sender detected as connected
01 – Speed sender detected as not connected
00 – Ignition (pin A3) off
01 – Ignition (pin A3) on
11
Note: “Pulser disconnect” is activated/deactivated when event “Power supply interruption for Motion Sensor” is
activated/deactivated.
6.2.1.9. Vehicle identification number
Bytes
0 – 16
17
Name
Vehicle Identification
Number
Delimiter
Description
ASCII characters
ASCII “*”
6.2.1.10. Driver 1 identification number
Bytes
0–2
Name
Issuing Member State
Description
ASCII characters
3 – 18
19
Card Number
Delimiter
ASCII characters
ASCII “*”
6.2.1.11. Driver 2 identification number
Bytes
0–2
Name
Issuing Member State
Description
ASCII characters
3 – 18
19
Card Number
Delimiter
ASCII characters
ASCII “*”
6.2.1.12. Vehicle registration number
Bytes
0
Name
Code Page
Description
ASCII characters
1 - 13
Vehicle Registration
Number
ASCII characters
6.2.1.13. Registering member state
Bytes
0–2
Name
Registering member
state
Description
ASCII characters
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6.3. Extended Serial Data Format (for 2400 compatibility)
This is a serial data stream to ensure compatibility when the Stoneridge digital tachograph is retro fitted to 2400
series tachograph systems.
All bytes in the serial data stream are sent in Big Endian format.
All parameters will be based on ISO16844-7, if nothing else is stated in this document.
The extended serial stream will have the following format and data.
1.
3 sync frames of 0xFF followed by 27.5 ms delay (extended stop bit)
2.
Followed by 25 bytes of information
a)
Number of information bytes (25)
b)
Speed (km/h / mph)
c)
Revs (20rpm units)
d)
Duty / self test (see section 6.3.1.1)
e)
Flags (see section 6.3.1.1)
f)
Speed DIL switch setting low byte (see section 6.3.1.1)
g)
Speed DIL switch setting high byte (see section 6.3.1.1)
h)
Pulses per Engine Revolution (see section 6.3.1.1)
i)
Revs Calibration data (see section 6.3.1.1)
j)
Revs bands / events (see section 6.3.1.1)
k)
RSL DIL switch setting (see section 6.3.1.1)
l)
RSL speed selected low byte (see section 6.3.1.1)
m)
RSL speed selected high byte (3 bits) (see section 6.3.1.1)
n)
Distance Counter (10 Metre units) (see section 6.3.1.1)
o)
Scale Type/Software Revision (see section 6.3.1.1)
p)
Odometer data byte 1 (see section 6.3.1.1)
q)
Odometer data byte 2
r)
Odometer data byte 3
s)
Odometer data byte 4
t)
Time and Date data Byte 1 (see section 6.3.1.1)
u)
Time and Date data Byte 2
v)
Time and Date data Byte 3
w)
Time and Date data Byte 4
x)
Time and Date data Byte 5
y)
Check Sum (2's complement)
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6.3.1. Selected Extended Serial Data Bytes Format
6.3.1.1. Description
Byte
number
Data
Resolution SE5000
1.
Number of information bytes (25)
2.
Speed (km/h / mph)
1km/h/bit
3.
Revs (20rpm units)
20revs/bit
4.
Duty / self test
See 6.3.1.2
5.
Flags
Set to 0
6.
Speed DIL switch setting low byte
Set to 0
7.
Speed DIL switch setting high byte
Set to 0
8.
Pulses per Engine Revolution
Set to 0
9.
Revs Calibration data
Set to 0
10.
Revs bands / events
Set to 0
11.
RSL DIL switch setting
Set to FF
12.
RSL speed selected low byte
Set to FF
13.
RSL speed selected high byte
Set to FF
14.
Distance Counter (10 Metre units)
Set to 0
15.
Scale Type/Software Revision
Bits 0-3 set to 0
Comment
Only km/h
Configuration if data
input is CAN or hard
wired.
Bits 4-7 set to C
16.
Odometer data byte 1
See 6.3.1.3
17.
Odometer data byte 2
See 6.3.1.3
18.
Odometer data byte 3
See 6.3.1.3
19.
Odometer data byte 4
See 6.3.1.3
20.
Time and Date data Byte 1
See 6.3.1.4
21.
Time and Date data Byte 2
See 6.3.1.4
22.
Time and Date data Byte 3
See 6.3.1.4
23.
Time and Date data Byte 4
See 6.3.1.4
24.
Time and Date data Byte 5
See 6.3.1.4
25.
Check Sum (2's complement)
Digital tacho has 4
duties for driver and 3
for co driver 2400 has
3 states.
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6.3.1.2. Duty/Self Test
Bit
0
1
2
3
4
5
6
7
Name
Factory Test
Self Test
Driver 2 Rest
Driver 1 Rest
Driver 2 Passive
Driver 2 Active
Driver 1 Passive
Driver 1 Active
Description
Never set
Never set
Driver 1 and Driver 2 working state indication. If card not inserted
indication is no duty and no driver/crew bit is set.
Rest = Break/Rest
Passive = Available
Active = Working or Driving
6.3.1.3. Odometer Data
The odometer data is stored in BCD format.
Byte
1
1
2
2
3
3
4
4
Bits
4-7
0-3
4-7
0-3
4-7
0-3
4-7
0-3
Description
Odometer 100000 units
Odometer 10000 units
Odometer 1000 units
Odometer 100 units
Odometer 10 units
Odometer 1 units
Odometer 0.1 units
Unused
6.3.1.4. Time and date
The time data is stored in BCD format
Byte
1
2
3
4
5
Description
Minutes (0 – 59)
Hours (0 – 23)
Day of month (1 - 31)
Month (1 – 12)
Year (0 – 99, representing the years 1990 - 2089)