Omron V780 Series User Manual page 180

7 Modbus/TCP Communications
DATA WRITE
 Function
This command writes data to the RF Tag in the communications range.
 Command Format
Byte-0 Byte-1
Transaction identi-
fier
X X
Byte-12 Byte-13
Byte
count
1 byte
Parameter
Field length
Register address
Word count
Byte count
Data to write
 Response Formats
• Normal Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Register address
Word count
Note If the reception level is required, use GET RF TAG ADDITIONAL INFORMATION on page 7-131.
• Error Response
Byte-0 Byte-1
Transaction identi-
fier
X X
7 - 28
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 2 bytes
... Byte-n
Data to write
1 to 120 words
Setting range: 0009 to 00F7 hex (9 to 247)
Specify in 4-digit hexadecimal the start address for writing data in the RF Tag.
Setting ranges (word address specifications)
0000 to 07FF hex: Reserved area
1000 to 17FF hex: UII (EPC) area
2000 to 27FF hex: TID area
3000 to 3FFF hex: User area
Specify in 4-digit hexadecimal the number of words of data to write.
Setting range: 0001 to 0078 hex (120 words max.)
Specify in 4-digit hexadecimal the number of bytes of data to write.
Setting range: 02 to F0 hex (240 bytes max.)
Specify the data to write to RF Tag.
Between 1 and 120 words of data can be written with one command.
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0006 hex
The register address from the command is set
The word count from the command is set.
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0003 hex
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 10 hex
Description
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 10 hex
Description
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 90 hex
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
Byte-1
Byte-8 Byte-9 Byte-11
0
Register address Word count
2 bytes 2 bytes
Byte-8 Byte-9 Byte-10 Byte-11
Register address Word count
2 bytes 2 bytes
Byte-8
Excep-
tion code
1 byte