Pepperl+Fuchs IVI-KHA6-4HRX - Additional Read;Write Commands for IDC

IDENT-I • IVI-KHA6-4HRX, IVI-KHD2-4HRX
Operating control interface units using the 3964R protocol
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
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epperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
Date of issue 27.08.2001
46
8.2.6 Additional read/write commands for IDC- ... -1K and IMC-40- ... data carriers
Read/write commands
Bild 8.22: Read/write commands
Structure of a read page command
Bild 8.23: Structure of a read page command
Example: A single read attempt at head 4. Read page 2: 6C 04 00 02
Structure of the response message after data has been read
Bild 8.24: Structure of the response message after data has been read
Example: The above read page command was erroneous due to a defective
read head: 6C 80 06
Structure of the response message after data has been written
Bild 8.25: Structure of the response message after data has been written
Example: Response to the above command after a write operation at head 4:
4D 0F 00
Command Hex identifier
Auto Read Page 4Ch
Single Read Page 6Ch
Byte 1 Byte 2 Byte 3 Byte 4
Command Head-no. Low byte
page
High byte
page
Byte 1
High
Byte 2
Low
Byte 2
Byte 3
Byte 4...
Byte 36
Command 0 Head status Head-no. Read Data
Byte 1
High nibble
Byte 2
Low nibble
Byte 2
Byte 3
Command 0 Status/Head Status/Error
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