Id Tag Data Access; Read Data From Id Tag; Write Data To Id Tag - IFM DTM426 Operating Instructions Manual

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
fier
ID Parameter index
29 bits 2 bytes
0x01
Example
Read 8 bytes of data from ID tag address 4.
Requirement: Master → ECU
CAN identi-
8-byte data frame
fier
0xCEFEB14 0x01
Response: Master ← ECU
CAN identi-
8-byte data frame
fier
0xCEF14EB 0x01
For successful reading and writing, the ID tag must be in the detection range of the read/write
head. In the event of data read and write errors, the status byte responds with 0x0B.
9.4.2 Write data to ID tag
The data is written to the ID tag by sending a "write parameter" frame with the following information:
• Data address
• Data length
• Data
CAN
x-byte data frame
identifier
ID Parameter index
29 bits 2 bytes
0x01 0xA0
Example
Write 4 bytes of data (0xAA,0xBB,0xCC,0xDD) to ID tag address 2.
Requirement: Master → ECU
18
Read/Write Status
1 byte 1 byte
0xA0 0x00 0x00
0xA0 0x00
0xA0 0x00
Read/ Status
Write
1 byte
1 byte
0x00 0x00
ID tag
Data address
LSB MSB
0x00 0x04 0x00
0x00 Data[0] Data[1]
ID tag ID tag
Data address Data length
LSB MSB LSB
ID tag
Data length
LSB MSB
0x08 0x00
Data[2] ...
ID tag
Data
MSB Data[0] Data[x]