This document applies to the device of type "inclination sensor" (art� no�: JN2300)�
It is part of the device�
This document is intended for specialists� These specialists are people who are
qualified by their appropriate training and their experience to see risks and to
avoid possible hazards that may be caused during operation or maintenance of
the device� The document contains information about the correct handling of the
device�
Read this document before use to familiarise yourself with operating conditions,
installation and operation� Keep this document during the entire duration of use of
the device�
Adhere to the safety instructions�
1.1 Symbols used
►Instructions
>Reaction, result
[…]Designation of keys, buttons or indications
→Cross-reference
Important note
Non-compliance may result in malfunction or interference�
Information
Supplementary note
2 Safety instructions
2.1 General
These instructions are an integral part of the device� They contain texts and figures
concerning the correct handling of the device and must be read before installation
or use�
Observe the operating instructions� Non-observance of the instructions, operation
which is not in accordance with use as prescribed below, wrong installation or
incorrect handling can seriously affect the safety of operators and machinery�
2.2 Target group
These instructions are intended for authorised persons according to the EMC and
low-voltage directives� The device must only be installed, connected and put into
operation by a qualified electrician�
2.3 Electrical connection
Disconnect the unit externally before handling it�
4
Inclination sensor JN
The connection terminals may only be supplied with the signals indicated in the
technical data and/or on the device label and only the approved accessories from
ifm may be connected�
2.4 Tampering with the device
Contact the manufacturer in case of malfunction of the unit or uncertainties�
Any tampering with the device can seriously affect the safety of operators and
machinery� In case of tampering with and/or modifying the unit, any liability and
warranty is excluded�
3 Functions and features
The 2-axis inclination sensor with SAE J1939 interface enables angle levelling and
position detection of mobile machines�
Typical applications are, for example, the position detection of access platforms,
levelling of mobile cranes or set-up of mobile machines�
UK
Properties:
●2-axis inclination sensors with a measuring range of ±180° (0���360°)
●High accuracy and resolution
●High sampling rate and band width
●Diagnostic Trouble Code (DTC) available
●Configurable limit frequency (digital filter) for vibration suppression
●Programming key
4 Installation
4.1 Fixing
► Fasten the device using 4 M5 screws on a flat surface�
Screw material: steel or stainless steel�
4.2 Mounting surface
The housing must not be exposed to any torsional forces or mechanical
stress�
► Use compensating elements if there is no flat mounting surface available�
5
Inclination sensor JN
21
12
5 Scale drawing
90
75
60
36
45
4,5
22
5,3
6 Electrical connection
The inclination sensors are fitted with two round 5-pole M12 connectors (A-coded)�
The pin configuration is as illustrated�
1: CAN_SHLD CAN shield
2: CAN_V+ Supply voltage 24 V DC (+UB)
5
3
M12 connector CAN-In
4
5
4
M12 socket CAN-Out
3
3: CAN_GND Ground
4: CAN_H High bus cable
5: CAN_L Low bus cable
1: CAN_SHLD CAN shield
2: CAN_V+ Supply voltage 24 V DC (+UB)
3: CAN_GND Ground
4: CAN_H High bus cable
5: CAN_L Low bus cable
6.1 Bus termination
The inclination sensors have an internal 120 Ohm terminating resistor that can be
assigned (index 0x2045)�
6
Inclination sensor JN
7 SAE J1939 interface
The inclination sensors have a standardised SAEJ1939 interface� All measured
values and parameter groups can be accessed via the J1939 protocol� The
individual configuration can be saved in the internal permanent memory (flash)�
7.1 Overview and structure of the SAE J1939 protocol
SAE J1939 uses 29-bit CAN identifier (extended frame format CAN 2�0B)� An SAE
J1939 message has the following structure:
SAE J1939 message
29-bit CAN identifierData
Priority
28…26
Parameter Group Number (PGN)
Ext� data page 25Data page 24PDU format (PF)
PGN
25���8
Source address
7���0
23…16
PDU format 1 (specific)
00h - EFh
23…16
PDU format 2 (global)
User data of the
message
0…8 bytes
Target address / group
extension (PS) 15…8
Target address (DA)
15…8
UK
F0h - FFh
23…16
Group Extension (GE)
15…8
7.1.1 PDU format 1
This format defines a message which is sent to a defined unit� In this case the
PDU-specific byte (PS) is the target address (DA) of the unit� If the value of the
PDU format field (PF) is between 0x00 and 0xEF, it is a PDU format 1 message�
For proprietary (manufacturer-specific) messages the PDU format value 0xEF is
defined� Ext� data page bit = 0 and data page bit = 0�
7.1.2 PDU format 2
This format defines a message which is sent globally� In this case the PDUspecific byte (PS) corresponds to the group extension (GE)� If the value of the
PDU format field (PF) is between 0xF0 and 0xFF, it is a PDU format 1 message�
For proprietary (manufacturer-specific) messages the area (PDU format PF) and
group extension (GE) 0xFF00 – 0xFFFF is defined�
Ext� data page bit = 0 and data page bit = 0
7
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