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IDENT-I • IVI-KHA6-4HRX, IVI-KHD2-4HRX
Operating control interface units using the 3964R protocol
8.2.6 Additional read/write commands for IDC- ... -1K and IMC-40- ... data carriers
Read/write commands
Command
Auto Read Page
Single Read Page
Bild 8.22:
Read/write commands
Structure of a read page command
Byte 1
Command
Bild 8.23:
Structure of a read page command
Example:
Structure of the response message after data has been read
Byte 1
Command
Bild 8.24:
Structure of the response message after data has been read
Example:
Structure of the response message after data has been written
Byte 1
Command
Bild 8.25:
Structure of the response message after data has been written
Example:
Subject to reasonable modifications due to technical advances.
46
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Byte 2
Head-no.
A single read attempt at head 4. Read page 2: 6C 04 00 02
High
Byte 2
0
Head status
The above read page command was erroneous due to a defective
read head: 6C 80 06
High nibble
Byte 2
0
Response to the above command after a write operation at head 4:
4D 0F 00
Hex identifier
4Ch
6Ch
Byte 3
Low byte
page
Low
Byte 2
Byte 3
Head-no.
Low nibble
Byte 2
Status/Head
Byte 4
High byte
page
Byte 4...
Byte 36
Read Data
Byte 3
Status/Error
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