Related Manuals for IFM DTM426
Summary of Contents for IFM DTM426
- Page 1 Operating instructions J1939 interface RF-identification system DTM426 DTM427 Read/write head...
-
Page 2: Table Of Contents
DTM426 DTM427 Contents Preliminary note ............. -
Page 3: Preliminary Note
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... -
Page 4: Safety Instructions
DTM426 DTM427 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. -
Page 5: Intended Use
DTM426 DTM427 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. -
Page 6: Items Supplied
DTM426 DTM427 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. -
Page 7: Function
DTM426 DTM427 5 Function 5.1 ID tags 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. -
Page 8: Installation
DTM426 DTM427 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. -
Page 9: Install Device
DTM426 DTM427 6.4 Install device u Fix the device using the supplied nuts (M18). DTM426 Fig. 3: Flush mounting DTM427 Fig. 4: Non-flush mounting 6.5 Mounting distances DTM426 Operating mode Distance side (A) Distance front (B) For reading and writing ≥ 50 mm ≥ 100 mm... -
Page 10: Positioning Of The Id Tags
DTM426 DTM427 DTM427 Operating mode Distance side (A) Distance front (B) For reading and writing ≥ 65 mm ≥ 180 mm 6.6 Positioning of the ID tags The sensing face marks the centre of the integrated antenna coil of the read/write head. - Page 11 DTM426 DTM427 w The distance “D” is indicated in the data sheet.
-
Page 12: Electrical Connection
4: CAN high 5: CAN low The CAN bus connection is almost trouble-free if the following points are considered: u Use cables approved for CAN bus. u Terminate the cables with 120 Ω terminating resistors. Information on available sockets see: www.ifm.com. -
Page 13: Operating And Display Elements
DTM426 DTM427 8 Operating and display elements DTM426 DTM427 1 LEDs green / yellow / red State Description green Operating status operational flashes Device deactivated yellow ID tag detected flashes once for 1/4 s ID tag read or written successfully flashes briefly 4x... -
Page 14: Operation
DTM426 DTM427 9 Operation 9.1 J1939 interface The RFID read/write heads have a standardised SAE J1939 interface. All measured values and parameters can be accessed via the J1939 protocol. The individual configuration can be saved in the internal permanent memory. Structure of the SAE J1939 protocol The SAE J1939 protocol uses a 29-bit CAN identifier (extended frame format CAN 2.0B). -
Page 15: Proprietary Protocol In Pdu Format 1
DTM426 DTM427 9.1.1 Proprietary protocol in PDU format 1 The parameters of the device are listed in a table that is accessed per 16-bit index. To access the sensor parameters in reading or writing the proprietary PDU format 1 message is used. PDU format (PF) corresponds to the value 0xEF. -
Page 16: Parameter Mapping
DTM426 DTM427 Address control unit / master: 0x14 Priority of the message: 3 Requirement: Master → ECU CAN identi- 8-byte data frame fier 0xCEFEB14 0x00 0x28 0x01 0x00 0x08 0x00 0x00 0x00 Response: Master ← ECU CAN identi- 8-byte data frame... - Page 17 DTM426 DTM427 Status Value Description Power enabled (value always 1) Antenna deactivated Antenna activated present No ID tag present ID tag present fr_err Front end OK Front end error detected (hardware problem) buf_ovfl Buffer OK Buffer overflow detected claim Address claiming OK...
-
Page 18: Id Tag Data Access
DTM426 DTM427 9.4 ID tag data access 9.4.1 Read data from ID tag The data is read by the ID tag by sending a "read parameter" frame with the following information: • Data address • Data length CAN identi- 8-byte data frame... -
Page 19: Settings
DTM426 DTM427 identi- x-byte data frame fier 0xCEF 0x01 0xA0 0x01 0x00 0x02 0x00 0x04 0x00 0xAA 0xBB 0xCC 0xDD EB14 Response: Master ← ECU CAN identifier x-byte data frame 0xCEF14EB 0x01 0xA0 0x01 0x00 For successful reading and writing, the ID tag must be in the detection range of the read/write head. -
Page 20: Maintenance, Repair And Disposal
10 Maintenance, repair and disposal The unit is maintenance-free. u Contact ifm in case of malfunction. u Do not open the housing as the unit does not contain any components which can be maintained by the user. The unit must only be repaired by the manufacturer. -
Page 21: Approvals/Standards
DTM426 DTM427 11 Approvals/standards For approvals and standards, the following information is available: • Test standards and regulations: documentation.ifm.com • EU declaration of conformity and approvals: documentation.ifm.com • Notes relevant for approval: package inserts of the device... -
Page 22: Glossary
DTM426 DTM427 Glossary Controller Area Network, bus system for use in mobile applications. ID tag An ID tag is used to identify objects. A read/ write device is used to read the ID tag via a high-frequency radio signal. An ID tag...
Need help?
Do you have a question about the DTM426 and is the answer not in the manual?
Questions and answers