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Section 7 Message Details
RFID System
User's Manual
(Modbus TCP)
Section 7
Host Communications Specifications
LOCK
This query locks the specified memory in the RF Tag.
It will no longer be possible to write data to the locked memory. The lock cannot be released.
Query Format
Unit to lock depends on the RF tag.
For details, refer to RF Tag Memory Map in Section 11 Appendices.
p.323
Response Format
Normal Response
Error Response
Execution Example
Locking Four Blocks/Sectors Starting from Block/Sector 2 in the RF Tag
TX: 00000000000BFF10A20000020400020004
RX: 000000000006FF10A02000002
Parameter Description
Register address The register address (A200 hex) that specifies locking memory.
Word count Number of words of lock information (0002 hex)
Byte count Number of bytes of lock information (04 hex)
Lock
information
Lock number Specify in 4-digit hexadecimal the first block or sector number to lock.
Lock count Specify in 4-digit hexadecimal the number of blocks or sectors to lock.
Parameter Description
Register address Contains the register address that was specified in the query.
Word count Contains the word count that was specified in the query.
Parameter Description
Exception code For details, refer to Exception Code Table in this section.
p.167
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9 Byte 10 Byte 11 Byte 12 Byte 13
···
Byte 16
Transaction
identifier
Protocol
identifier
Field length
Unit
identifier
Function code
Register
address
Word count Byte count Lock information
X X 0000 hex 000B hex FF hex 10 hex A200 hex 0002 hex 04 hex 4 bytes
Byte 13 Byte 14 Byte 15
Byte 16
Lock number Lock count
2 bytes 2 bytes
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9 Byte 10 Byte 11
Transaction
identifier
Protocol
identifier
Field length
Unit
identifier
Function code Register address Word count
X X 0000 hex 0006 hex FF hex 10 hex A200 hex 0002 hex
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
Transaction
identifier
Protocol identifier Field length
Unit
identifier
Function
code
Exception
code
X X 0000 hex 0003 hex FF hex 90 hex 1 byte
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