Ifm-electronic JN2300 Manuel d'utilisateur télécharger pdf (Page 8)

Inclination sensor JN

7.2 Proprietary PDU format 1 protocol

The parameters of the JN2300 sensors 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�

In this case the PDU-specific byte (PS) is the target address (DA) of the unit which

the message is to be sent to�

Example

Address target unit (ECU): 0x19

Address control unit / master: 0x14

Priority of the message: 3

CAN identifier 8-byte data frame

ID 29 bits Parameter index 2 bytes Read/write 1 byte Status 1 byte 4-byte data

Request: Master → ECU

0xCEF1914 LSB MSB RW 0 LSB �� MSB

Answer: Master ← ECU

0xCEF1419 Index RW SC LSB �� MSB MSB

Parameter index: 2-byte parameter index�

RW: Read parameter → 0x00 / write parameter → 0x01

SC: Status code

0x00: OK

0x01: parameter value too small

0x02: parameter value too big

0x03: parameter index does not exist

0x04: parameter can only be read

0x05: parameter can only be written

0x06: no access to parameter

0x07: invalid data size

0x08: parameter writing blocked (e�g�: If the same value of a parameter is written

which is already set in the sensor)

0x09: invalid command

0x0A: unknown error�

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Ifm-electronic JN2300 Manuel d'utilisateur Page 8