Omron V780 Series User Manual page 198

7 Modbus/TCP Communications
EXTENDED DATA WRITE
 Function
This command writes data to the RF Tag in the communications range.
You can specify writing up to 2,048 words with one EXTENDED DATA WRITE command.
 Command Format
Byte-0 Byte-1
Transaction identi-
fier
X X
Byte-12 Byte-13
Write size
2 bytes
Parameter
Field length
Subfunction code
Write area start address
Write size
Data to write
Options
 Response Formats
• Normal Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Byte-12 ...
StoredPC
2 bytes
7 - 46
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 000C to 100A hex
Byte-14 ...
Data to write
1 to 2,048 words (2 to 4,096 bytes)
Setting range: 000C to 100A hex
0002 hex: EXTENDED DATA WRITE
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 0800 hex (2,048 words max.)
The data to write
For details, refer to 7-3 RF Communications Command Options on page 7-10.
Byte-2 Byte-3 Byte-4 Byte-5
Protocol identifier Field length
0000 hex 2 bytes
... ... ...
Options
0 to 70 bytes
UII (EPC code) Reception level
62 bytes 2 bytes
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 64 hex
Byte-n
+ n
Options
2 bytes
Description
Byte-6 Byte-7
Unit Function
identifier code
FF hex 64 hex
... ... ...
Diagnostic results
2 bytes
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
Byte-8 Byte-9 Byte-10 Byte-11
Subfunction code Write area start
address
0002 hex 2 bytes
Byte-8 Byte-9 Byte-10 Byte-11
Subfunction code Error code
0002 hex 0000 hex
... Byte-n
Reader/Writer
Number
2 bytes