Omron V780 Series User Manual page 175

• Error Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Exception code
 Execution Examples
Reading the ID Data from the RF Tag
Example 1: Execution When an RF Tag Is in the Communications Range (StoredPC: 3000 hex, UII
(EPC code): 111122223333444455556666 hex)
TX: 000000000006FF0340000020
RX: 000000000043FF0340300011112222333344445555666600...00
* Words 7 through 31 of the UII (EPC code) section (i.e., the words past the EPC length of 6 words)
are filled with zeros.
Example 2: Execution When an RF Tag Is Not in the Communications Range (Exception Code: 04
Hex (Failure in Device))
TX: 000000000006FF0340000020
RX: 000000000003FF8304
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0003 hex
For details, refer to Exception Code on page 7-7 under Response Format for Error
Completion on page 7-7.
7 Modbus/TCP Communications
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 83 hex
Description
Byte-8
Excep-
tion
code
1 byte
7
7 - 23