IFM DTM436 User manual

Operating instructions
J1939 interface
RF-identification system
DTM436
DTM437
Read/write head
11464605 / 0006 / 2022
GB

DTM436 DTM437
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Contents
1 Preliminary note ............................................................. 3
1.1 Symbols used.......................................................... 3
1.2 Warnings used ......................................................... 3
1.3 Legal and copyright information ............................................ 3
2 Safety instructions............................................................ 4
3 Intended use................................................................ 5
4 Items supplied............................................................... 6
5 Function ................................................................... 7
5.1 ID tags ............................................................... 7
5.2 Device overview........................................................ 7
6 Installation.................................................................. 8
6.1 Notes on the unit installation............................................... 8
6.2 Avoiding interference .................................................... 8
6.3 Mechanical design ...................................................... 8
6.4 Install device........................................................... 9
6.5 Mounting distances...................................................... 9
6.6 Positioning of the ID tags ................................................. 10
7 Electrical connection.......................................................... 12
7.1 Wiring................................................................ 12
8 Operating and display elements................................................. 13
9 Operation .................................................................. 14
9.1 J1939 interface......................................................... 14
9.1.1 Proprietary protocol in PDU format 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9.1.2 Configuration example ............................................... 15
9.2 Parameter mapping...................................................... 16
9.3 Device status .......................................................... 16
9.4 ID tag data access ...................................................... 18
9.4.1 Read data from ID tag................................................ 18
9.4.2 Write data to ID tag.................................................. 18
9.5 Settings............................................................... 19
9.5.1 Device address (0x2000) and baud rate (0x2001). . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.5.2 Address claiming.................................................... 19
9.5.3 Reset read/write head................................................ 19
10 Maintenance, repair and disposal................................................ 20
11 Approvals/standards.......................................................... 21
Glossary................................................................... 22

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1 Preliminary note
You will find instructions, technical data, approvals and further information using the QR code on the
unit / packaging or at www.ifm.com.
1.1 Symbols used
Requirement
Instructions
Reaction, result
[...] Designation of keys, buttons or indications
Cross-reference
Important note
Non-compliance may result in malfunction or interference.
Information
Supplementary note
1.2 Warnings used
ATTENTION
Warning of damage to property
1.3 Legal and copyright information
© All rights reserved by ifm electronic gmbh. No part of these instructions may be reproduced and
used without the consent of ifm electronic gmbh.
All product names, pictures, companies or other brands used on our pages are the property of the
respective rights owners.

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2 Safety instructions
General
• The unit described is a subcomponent for integration into a system.
– The system architect is responsible for the safety of the system.
– The system architect undertakes to perform a risk assessment and to create documentation in
accordance with legal and normative requirements to be provided to the operator and user of
the system. This documentation must contain all necessary information and safety instructions
for the operator, the user and, if applicable, for any service personnel authorised by the
architect of the system.
• Read this document before setting up the product and keep it during the entire service life.
• The product must be suitable for the corresponding applications and environmental conditions
without any restrictions.
• Only use the product for its intended purpose (Ò → Intended use).
• If the operating instructions or the technical data are not adhered to, personal injury and/or damage
to property may occur.
• The manufacturer assumes no liability or warranty for any consequences caused by tampering with
the product or incorrect use by the operator.
• Installation, electrical connection, set-up, operation and maintenance of the product must be
carried out by qualified personnel authorised by the machine operator.
• Protect units and cables against damage.
Radio equipment
In general, radio equipment must not be used in the vicinity of petrol stations, fuel depots, chemical
plants or blasting operations.
uDo not transport and store any flammable gases, liquids or explosive substances near the unit.
Interference of electronic and medical devices
Operation can affect the function of electronic devices that are not correctly shielded.
uDisconnect the device in the vicinity of medical equipment.
uContact the manufacturer of the corresponding device in case of any interference.

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3 Intended use
The read/write head reads and writes ID tags without contact.
The data is made available as process data via the CAN-bus interface.

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4 Items supplied
• Read/write head
• 2x hexagonal nut
The device is supplied without installation and connection accessories.
Available accessories: www.ifm.com.
The optimum function is not ensured when using components from other manufacturers.

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5 Function
5.1 ID tags
The ID tags are passively operated without a battery. The energy required for operation is provided by
the read/write head.
The energy is provided via an inductive coupling. The integrated antenna coil in the read/write head
generates a magnetic field which partly penetrates the antenna coil of the ID tag. A voltage is
generated by induction that supplies the data carrier with energy.
The device supports ID tags according to ISO 15693.
5.2 Device overview
DTM436
Article number: DTM436
Function: Read/write head
Type designation: DTMHF IBRWCJUS03
Type: M30, flush mountable
DTM437
Article number: DTM437
Function: Read/write head
Type designation: DTMHF INRWCJUS03
Type: M30, non-flush mountable

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6 Installation
6.1 Notes on the unit installation
When mounting several RFID units adhere to the minimum distances between the systems.
Flush mounting of a read/write head in metal reduces the read/write distance.
Device performance can be affected if positioned in the immediate vicinity of powerful HF
emission sources such as welding transformers or converters.
6.2 Avoiding interference
The device generates a modulated electrical field with a frequency of 13.56 MHz.
Avoid interference with data communication:
uDo not operate any devices in the vicinity that use the same frequency band.
wSuch devices are for example frequency converters and switched-mode power supplies.
If there are other devices in the same frequency band in the vicinity:
uThe mounting distances between the devices should be as large as possible.
uUse the devices in alternating operation.
uSwitch the HF field of the device on/off.
6.3 Mechanical design
DTM436
Fig.1: DTM436
1 Sensing face
DTM437
Fig.2: DTM437
1 Sensing face

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6.4 Install device
uFix the device using the supplied nuts (M30).
DTM436
Fig.3: Flush mounting
DTM437
Fig.4: Non-flush mounting
6.5 Mounting distances
DTM436
Operating mode Distance side (A) Distance front (B)
For reading and writing ≥ 60 mm ≥ 120 mm

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DTM437
Operating mode Distance side (A) Distance front (B)
For reading and writing ≥ 100 mm ≥ 200 mm
6.6 Positioning of the ID tags
The sensing face marks the centre of the integrated antenna coil of the read/write head.
uAlign the sensing face of the read/write head and the ID tag in the same way.
For installation in or on metal use the ID tags provided for this purpose.
Position the ID tag in the area of the sensing face. When doing so, the angle of aperture and the
operating distance must be adhered to (→ Data sheet of the device).
DTM436
D
Fig.5: Position the ID tag
uAlign the ID tag on the central axis of the antenna of the device.
wThe distance “D” is indicated in the data sheet.
DTM437
D
Fig.6: Position the ID tag