Danfoss DST P92C Operating guide

Operation guide

Pressure transmitter

CAN SAE J1939

DST P92C

ia.danfoss.com

Operation guide | DST P92C Pressure transmitter CAN SAE J1939

Table of contents	Contents
	1.	General information...................................................................................................................................	2
	1.1	Contact...........................................................................................................................................................	2
	1.2	General............................................................................................................................................................	2
	1.3	CAN Interface................................................................................................................................................	3
	2.	Specifications...............................................................................................................................................	3
	3.	J1939 communication..............................................................................................................................	3
	3.1	Introduction.................................................................................................................................................	3
	3.2	Supported PGN’s and SPN’s....................................................................................................................	4
	3.3	PGN of Danfoss...........................................................................................................................................	10
	3.4	Definitions.....................................................................................................................................................	11
	3.4.1	PGN..................................................................................................................................................................	11
	3.4.2	SPN..................................................................................................................................................................	11
	3.5	Overview of the slot for pressure sensors.........................................................................................	11
	3.6	Additionally, Danfoss specific ...............................................................................................................	12
	3.7	References....................................................................................................................................................	12

1.	General Information	1.1 Contact
		1.1 Contact

Danfoss A/S

Industrial Automation

DK-6430 Nordborg

Denmark

www.ia.danfoss.com

E-mail: technical support_IA@danfoss.com

1.2 General

1.3 CAN Interface

The pressure transmitter DST P92C measures the physical quantity pressure. The range depends on the sensor which is used in the transmitter and

is 25–800 bar. The measured value is transmitted on the CAN-Bus with the J1939 protocol. The transmitter takes 1000 samples per second, does filtering and converts the raw value into the output format.

The CAN 2.0B interface is able to run up to a speed of 1 Mbit/sec with 11-bit and 29-bit identifiers.

The device includes a Full CAN controller specified to CAN 2.0B. The physical layer of the 2-wire interface is specified according to ISO 11898. The wires are protected against shortcircuit. By adjusting the rise and fall times of the CAN signals, the noise emission is minimized. The bus termination resistor is not included in the device.

2 | © Danfoss | DCS (im) | 2018.01

IC.PS.P21.2C.02 | 520B7799

Operation guide | DST P92C Pressure transmitter CAN SAE J1939

2.Specifications

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Electrical specifications

Supply voltage		9 – 36 V DC protected against reverse polarity
Current consumption at US = 24 V DC		I < 50 mA typical, IMAX < 100 mA
CAN Interface
Physical layer		2-wire interface, 5 V level according to ISO 11898
		2-wire interface, 5 V level according to ISO 11898
		Protected against short-circuit
		Protected against short-circuit
Bit rate		250 kBit/s
Signal rise time		Bit rate < 125 kbit/s 12 V/µs (without bus)
Signal rise time		Bit rate ≥ 125 kbit/s > 24 V/µs (without bus)
		Bit rate ≥ 125 kbit/s > 24 V/µs (without bus)
Bus termination		External
Protokoll		SAE J1939
Environment
EMC		EN 61000-6-2
		EN 61000-6-2
		EN 61000-6-4
		EN 61000-6-4
Operating temperature		-40 – 125 °C
Media temperature		-40 – 150 °C

M12 connector Pin Assignment (CiA DR303-1)

4	3	Pin 1	CAN shield, PE
	5	Pin 2	+UB, +24 V DC
<![if ! IE]> <![endif]>A78G09	5	Pin 3	GND, 0 V
1	2	Pin 4	CAN_H, CAN+
1	2	Pin 5	CAN_L, CAN-

3. J1939 Communication

3.1 Introduction

The Society of Automotive Engineers (SAE) developed the 1939 standard to be the preferred CAN for equipment used in industries ranging from agriculture, construction, and fire/ rescue to forestry, materials handling as well as on and off-highway vehicles. It is a high-level protocol that defines how communication between nodes (modules) occurs on the bus. The 1939 network is a specific communication system, supporting specific sets of applications and a specific industry, rather than being generalized.

Any electronic control unit (ECU) using J1939 is permitted to transmit a message on the network when the bus is idle. Every message includes a 29-bit identifier, which defines the message priority, what data is contained within the 8-byte data array that follows the identifier, and which ECU sent the message.

IC.PS.P21.2C.02 | 520B7799 | 3

Operation guide | DST P92C Pressure transmitter CAN SAE J1939

3.2Supported PGN’s and SPN’s PGN’s of SAE J1939

PGN	SPN	TTR [ms]	Data	Slot	SPN Name
PGN	SPN	TTR [ms]	Position	Slot	SPN Name
			Position

61448	1762	50	1-2	SAEpr08	Hydraulic Pressure

61448	6707	50	4-5	SAEpr20	Hydraulik Intake Pressure

61448	6708	50	6-7	SAEpr08	Hydraulic Discharge Pressure Set Point

61475	4334	50	6	SAEpr13	Aftertreatment 1 Diesel Exhaust Fluid Doser 1 Absolute Pressure

61478	4387	50	6	SAEpr13	Aftertreatment 2 Diesel Exhaust Fluid Doser 1 Absolute Pressure

61538	6583	10	1-2	SAEpr22	Tranmission Hydrostatic Loop 1 Pressure

61538	6584	10	3-4	SAEpr22	Tranmission Hydrostatic Loop 2 Pressure

64557	6787	500	1-2	SAEpr03	LNG Tank 1 Vapor Pressure

64557	6788	500	3-4	SAEpr03	LNG Tank 2 Vapor Pressure

64559	7350	1000	4	SAEpr13	Fire Suppression Compressed Air Foam System Air Pressure

64563	7100	500	1-2	SAEpr12	Engine Injector Metering Rail 1 Desired Pressure

64563	7101	500	3-4	SAEpr12	Engine Injector Metering Rail 2 Desired Pressure

64564	7096	500	1-2	SAEpr12	Engine Injector Metering Rail 1 Pressure 1 (Extended Range)

64564	7097	500	3-4	SAEpr12	Engine Injector Metering Rail 1 Pressure 2 (Extended Range)

64564	7098	500	5-6	SAEpr12	Engine Injector Metering Rail 2 Pressure 1 (Extended Range)

64564	7099	500	7-8	SAEpr12	Engine Injector Metering Rail 2 Pressure 2 (Extended Range)

64569	7067	500	1-2	SAEpr06	Plant Gaseous Fuel Supply Outlet Pressure

64569	7068	500	3-4	SAEpr06	Plant Inert Gas Supply Outlet Pressure

64570	7063	500	1-2	SAEpr06	Engine Gaseous Fuel Supply Pressure 2

64570	7064	500	3-4	SAEpr06	Gaseous Fuel Supply Unit Intake Pressure

64570	7065	500	5-6	SAEpr06	Gaseous Fuel Supply Shutoff Valve 1 Intake Pressure

64570	7066	500	7-8	SAEpr06	Gaseous Fuel Supply Shutoff Valve 2 Intake Pressure

64576	7019	500	4-5	SAEpr08	Engine Fuel 2 Pump Hydraulic Pressure

64577	7021	500	1-2	SAEpr08	Engine Fuel 2 Injector Metering Rail 1 Pressure

64577	7022	500	3-4	SAEpr08	Engine Fuel 2 Injector Metering Rail 2 Pressure

64577	7513	500	7-8	SAEpr08	Engine Fuel 2 Injector Metering Rail 1 Pressure 2

64578	6988	10000	2-3	SAEpr22	Time Pressure (Extended Range)

64578	6989	10000	4-5	SAEpr22	Required Tire Pressure

64579	6980	on request	2-3	SAEpr22	Cold Inflation Pressure

64589	6876	500	1	SAEpr10	Aftertreatment 2 Diesel Exhaust Fluid Dosing Pressure

64590	6875	500	1	SAEpr10	Aftertreatment 1 Diesel Exhaust Fluid Dosing Pressure

64590	7459	500	2	SAEpr13	Aftertreatment 1 Diesel Exhaust Fluid Doser 2 Absolute Pressure

64595	6837	500	4	SAEpr10	Gas Leakage Detection 1 Pressure

64595	6838	500	5	SAEpr10	Gas Leakage Detection 2 Pressure

64595	6839	500	6	SAEpr10	Gas Leakage Detection 3 Pressure

64600	6811	1000	1	SAEpr10	Engine Turbocharger 2 Lube Oil Pressure

64600	6812	1000	2	SAEpr10	Engine Turbocharger 3 Lube Oil Pressure

64600	6813	1000	3	SAEpr10	Engine Turbocharger 4 Lube Oil Pressure

64655	6646	100	1	SAEpr09	Engine Gaseous Fuel Supply Pressure (Extended Range)

64656	6589	500	1-2	SAEpr09	Engine Injector Metering Rail 1 Pressure 1

64656	6590	500	3-4	SAEpr09	Engine Injector Metering Rail 1 Pressure 2

64656	6591	500	5-6	SAEpr09	Engine Injector Metering Rail 2 Pressure 1

64656	6592	500	7-8	SAEpr09	Engine Injector Metering Rail 2 Pressure 2

IC.PS.P21.2C.02 | 520B7799

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