Technical Documentation– 0631 –Digital Pressure Transmitter
CANJ1939 Protocol

1-6-30-628-059

SUCO Robert Scheuffele GmbH & Co. KG,Keplerstraße 12-14, 74321 Bietigheim-Bissingen,Tel.:+49-7142-597-0, Fax: +49-7142-597-19
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Digital Pressure Transmitter 0631

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Table of content
1 History .................................................................................................................................................. 3
2 General Information ............................................................................................................................. 43 J1939 Default Settings & Definitions..................................................................................................... 5
3.1 Default Settings.............................................................................................................................. 5
3.2.1 PGN ......................................................................................................................................... 5
3.2.2 SPN.......................................................................................................................................... 64 CAN (J1939) Message Format ............................................................................................................... 7
4.1 Identifier (PGN) .............................................................................................................................. 7
4.2 Payload Format (SPN) .................................................................................................................... 75 Network Management.......................................................................................................................... 8
5.1 Address Claiming ........................................................................................................................... 85.1.2 Device Address........................................................................................................................ 96 SUCO Specific PGNs/SPNs ................................................................................................................... 10
7 Electrical Characteristics and Specifications ....................................................................................... 11
7.1 Operation Conditions................................................................................................................... 11
7.2 Electrical Connector and Pin Assignment .................................................................................... 11
8 List of abbreviations ............................................................................................................................ 12Created: 05.06.2018, R.

Revision: 02.12.2020, R.

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SUCO Robert Scheuffele GmbH & Co.KG, Keplerstraße 12-14, 74321 Bietigheim-Bissingen, Tel.:+497142-597-0, www.suco.de, info@suco.deTechnical Documentation
Digital Pressure Transmitter 0631

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1 History
Version
1.00
1.01
1.02
1.03

Date
05.06.2018
20.06.2018
15.07.201802.12.2020

Name
RW
RW
RW
RW

ChangeDocument created
Chapter assignment
Included chapter 5
Change of resolution for all SPNs

Created: 05.06.2018, R.

Revision: 02.12.2020, R.

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Digital Pressure Transmitter 0631

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2 General Information
The SAE J1939 protocol is a communication profile based on CAN (Controller Area Network), abus system developed for data transfer in motor vehicles. The protocol was developed by theSociety of Automotive Engineers (SAE®) to provide standardized communication anddiagnosis in commercial and special vehicles with several electronic control units (ECU) fromdifferent manufacturers. It is used in a wide range of application, from agriculture andconstruction through commercial and rail vehicles to truck and trailer platforms.
This technical documentation describes the basics for the transmission of pressure values,
which are measured with the 0631 SUCO J1939 transmitter. This documentation doesn’trepresent the final stage of development of the pressure transmitter 0631. That means
further changes or implementations are possible.
There is no warranty that all features described in this version of the document will beavailable for future development stages.
The following numeral systems are used in this documentation:
Index
DecimalBinary00d00b0000
10d10b0001
20d20b0010
30d30b0011
40d40b0100
50d50b0101
60d60b0110
70d70b0111
80d80b1000
90d90b1001
100d100b1010
110d110b1011
120d120b1100
130d130b1101
140d140b1110
150d150b1111
d is the decimal notationb is the binary notation

Hexadecimal
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
x is the hexadecimal notation

Leading zeros are only written down if they are necessary for the meaning of the value.

Created: 05.06.2018, R.

Revision: 02.12.2020, R.

WedlerWedlerVersion: 1.03SUCO Robert Scheuffele GmbH & Co.KG, Keplerstraße 12-14, 74321 Bietigheim-Bissingen, Tel.:+497142-597-0, www.suco.de, info@suco.deTechnical Documentation
Digital Pressure Transmitter 0631

5 of 103 J1939 Default Settings & Definitions
3.1 Default Settings
The physical CAN transmission of the SUCO 0631 pressure transmitter is defined according toISO 11898-2 (high-speed CAN) and can be used up to transmission rates of 1Mbit/s. The
standard bitrate of the 0631 Transmitter is 250kbit/s, according to the SAE.

The device supports the Extended CAN identifier (29 bit) specified according to CAN 2.0B.
By default, the source address is set to 0x5A (0d90).
The device uses the dynamic address claim configuration for its network management.
3.2.1 PGN

The PGN is part of the 29-bit long identifier and uniquely assigns the transmitted message toa parameter group (PG). In addition, a PGN consists of the following characteristics: priority,transmission repetition rate, length of data and position of the SPNs. The structure of thePGNs is described in SAE document J1939/71. In addition, proprietary formats (see table 1and 2) can be used. These are divided into Prop A and Prop B.
Proprietary A PGNs serve as a peer-to-peer connection and use the PDU1 format.
Proprietary B-PGNs are sent in PDU2 format and used as broadcast messages.
3.2.1.1 Priority

Priority is a 3-bit field in the identifier that determines the arbitration priority of theinformation to be transmitted, ensuring fast transmission of important messages. The highest
priority is zero and the lowest priority is seven.
3.2.1.2 Transmission Repetition Rate

The transmission repetition rate (TRR) defines the interval between the transmissions of twopressure values.

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SUCO Robert Scheuffele GmbH & Co.KG, Keplerstraße 12-14, 74321 Bietigheim-Bissingen, Tel.:+497142-597-0, www.suco.de, info@suco.deTechnical Documentation
Digital Pressure Transmitter 0631

6 of 103.2.2 SPN

The SPN (Suspect Parameter Number) is a defined number that describes the structure of asignal by defining the range, resolution, offset and length of the data in bytes (see Tables 1and 2). SPNs with common properties are bundled into parameter groups and transmittedwith the same parameter group number.

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4 CAN (J1939) Message Format
4.1 Identifier (PGN)
CAN-Identifier – 29 bit
Parameter Group Number (PGN)
Priority
Source Address (SA)R DP PDU Format (PF)PDU Specific (PS)29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
PDU 1 Format (peer-to-peer)
Values: 0x00 – 0xEF
Destination Address (DA)24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
PDU 2 Format (global / broadcast)
Values: 0xF0 – 0xFF
Group Extension (GE)24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9

4.2 Payload Format (SPN)
Data Payload – 64 bit
Not Used
0xFF0xFF
Byte 8Byte 70xFF
Byte 60xFF
Byte 50xFF
Byte 40xFF
Byte 3SPN: SUCOb101
0x02
0xB9
Byte 2Byte 1In the 8-byte payload field, the first two bytes are typically used for the pressure value.
Unused bits are filled with a binary '1' and thus displayed byte wise as 255 (0xFF). In order toobtain the exact pressure value from the data obtained, the following calculation must becarried out. The values for offset and resolution can be found in Table 1 and Table 2 for ourpressure ranges.
Example pressure calculation:
𝑃𝑟𝑒𝑠𝑠𝑢𝑟𝑒 = 𝐷𝑖𝑔𝑖𝑡𝑠 ⋅ 𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛 − 𝑂𝑓𝑓𝑠𝑒𝑡= 697 (0𝑥02𝐵9) ⋅ 0.01 − 0= 6.97 𝑏𝑎𝑟

Created: 05.06.2018, R.

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Digital Pressure Transmitter 0631
5 Network Management

The device supports the dynamic network described in SAE document J1939/81. In addition
to the address claim command, this includes the resolving of any address conflicts that may
occur if several devices with the same address are on the network. This includes support for
automatic address alterations during operation.

5.1 Address Claiming
After switching on, the device sends a CAN "Address Claimed"-message according to thefollowing example:CAN-ID
DLC
0x18EEFF5A 8Device Name
0xF1
0xFB

0x89

0x6D

0x31

0x04

0x0E

0xD1

If there are two devices with the same device address in the network or if another device withthe same device address is added, the name of the device determines who may use theclaimed address and who must search for a new one. The following applies: The lower thenumber in the name, the higher its priority and thus the rights to claim the address.
The name of a device consists of a 64-bit value and is unique worldwide.

Device Name
Addressing Ability

Function Specific Parts

Manufacturer Specific Parts

Addressing Ability
AAC
1 bit (1dez)

Function Specific Parts
Industry Group

Vehicle System Instance

Vehicle System

Reserved

Function

Function InstanceECU Instance3 bit (5dez)

4 bit (1dez)

7 bit (7dez)

1 bit (0dez)

8 bit (4dez)

5 bit (6dez)

3 bit (1dez)

Manufacturer Specific Parts
Manufacturer CodeIdentity Number

11 bit (876dez)

21 bit (device-specific)

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SUCO Robert Scheuffele GmbH & Co.KG, Keplerstraße 12-14, 74321 Bietigheim-Bissingen, Tel.:+497142-597-0, www.suco.de, info@suco.deTechnical Documentation
Digital Pressure Transmitter 0631

9 of 105.1.2 Device Address

The device address is a 8-bit long value and can be used as source address (SA) to identify theorigin of a CAN message, or in PDU-specific format for peer-to-peer messages.

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10 of 10Digital Pressure Transmitter 0631
6 SUCO Specific PGNs/SPNs
Pressure – bar
0 – 1 bar0 – 2.5 bar
0 – 4 bar0 – 6 bar0 – 10 bar
0 – 16 bar
0 – 25 bar
0 – 40 bar
0 – 60 bar
0 – 100 bar
0 – 160 bar
0 – 250 bar
0 – 400 bar
0 – 600 bar

PGN

Priority

65280 (0xFF 00)
65281 (0xFF 01)
65282 (0xFF 02)
65283 (0xFF 03)
65284 (0xFF 04)
65285 (0xFF 05)
65286 (0xFF 06)
65287 (0xFF 07)
65288 (0xFF 08)
65289 (0xFF 09)
65290 (0xFF 0A)
65291 (0xFF 0B)
65292 (0xFF 0C)
65293 (0xFF 0D)

77777777777777TRR
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 msPosition
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte

SPN

Range

Resolution

SUCOb100
SUCOb250
SUCOb400
SUCOb600
SUCOb101
SUCOb161
SUCOb251
SUCOb401
SUCOb601
SUCOb102
SUCOb162
SUCOb252
SUCOb402
SUCOb602

1 bar
2.5 bar
4 bar
6 bar
10 bar
16 bar
25 bar
40 bar
60 bar
100 bar160 bar
250 bar
400 bar
600 bar0.05 mbar/bit
0.125 mbar/bit
0.2 mbar/bit
0.3 mbar/bit
0.5 mbar/bit
0.8 mbar/bit
1.25 mbar/bit
2.0 mbar/bit
3.0 mbar/bit
5.0 mbar/bit
8.0 mbar/bit
12.5 mbar/bit
20.0 mbar/bit
30.0 mbar/bit

SPN

Range

Resolution

SUCOp152
SUCOp202
SUCOp302
SUCOp602
SUCOp103
SUCOp153
SUCOp253
SUCOp303
SUCOp603
SUCOp873

150 psi
200 psi
300 psi
600 psi1000 psi
1500 psi
2500 psi
3000 psi
6000 psi
8700 psi

OffsetLength

0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar

2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byteOffsetLength

0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar
0 bar

2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byte2 byteTable 1Pressure – psi
0 – 150 psi
0 – 200 psi
0 – 300 psi
0 – 600 psi
0 – 1000 psi
0 – 1500 psi
0 – 2500 psi
0 – 3000 psi
0 – 6000 psi
0 – 8700 psi

PGN

Priority

65380 (0xFF 64)
65381 (0xFF 65)
65382 (0xFF 66)
65383 (0xFF 67)
65384 (0xFF 68)
65385 (0xFF 69)
65386 (0xFF 6A)
65387 (0xFF 6B)
65388 (0xFF 6C)
65389 (0xFF 6D)

7777777777TRR
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 ms
100 msPosition
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte
1-2 Byte

0.0075 psi/bit
0.010 psi /bit
0.015 psi /bit
0.030 psi /bit
0.050 psi /bit
0.075 psi /bit
0.125 psi /bit
0.150 psi /bit
0.300 psi /bit
0.435 psi /bit

Table 2Created: 05.06.2018, R.

Revision: 02.12.2020, R.

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7 Electrical Characteristics and Specifications
7.1 Operation Conditions
Symbol
VCC
ICC

Parameter
Supply Voltage
Supply Current

Conditions

Top

Operating temperature

VCC = 9 V1)
VCC = 32 V

Switchable Termination
TambAmbient temperature
Tcomp
Compensated temperature range
VCAN_H/L Voltage on CANH / CANL
Related to GND
The device is protected against miswiring at voltages up to 32 volts

Min Typ91) 32
123-40-40-40-20-32

Max35
14
5125
105
105
85
32UnitVmAmA°C°C°C°C
V7.2 Electrical Connector and Pin Assignment____________________________________________________
1)
Absolute Minimum - When designing the application network, consider the wiring resistances

Created: 05.06.2018, R.

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8 List of abbreviations
CAN: Controller Area Network
DA: Destination Address
ECU: Electronic Control Unit
PDU: Protocol Data Unit
PGN: Parameter Group Number
SA: Source Address
SAE®: Society of Automotive Engineers
SPN: Suspect Parameter Number
AAC: Arbitrary Address Capable
TRR: Transmission Repetition Rate
DP: Data Page
PDU: Protocol Data Unit
PF: PDU Format
PS: PDU SpecificCreated: 05.06.2018, R.

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SUCO Robert Scheuffele GmbH & Co.KG, Keplerstraße 12-14, 74321 Bietigheim-Bissingen, Tel.:+497142-597-0, www.suco.de, info@suco.de