Multiaccess Communications Commands - Omron V780 Series User Manual

7 Modbus/TCP Communications
7-6-2

Multiaccess Communications Commands

SET MULTIACCESS ID READ
 Function
This command specifies reading the IDs (i.e., the UIIs (EPC codes)) of the RF Tags in the communi-
cations range.
 Command Format
Byte-0 Byte-1
Transaction identi-
fier
X X
Byte-12 Byte-13
Byte Options
count
02 hex 2 bytes
Parameter
Register address
Word count
Byte count
Options
 Response Formats
• Normal Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Word count
• Error Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Exception code
7 - 34
Byte-2 Byte-3 Byte-4 Byte-5
Protocol identifier Field length
0000 hex 0009 hex
Byte-14
The register address (9000 hex) that specifies setting multiaccess ID reading
The number of words for the option (0001 hex)
The number of option bytes (02 hex)
For details, refer to 7-3 RF Communications Command Options on page 7-10.
Options are implemented in a normal response to the GET MULTIACCESS ID
READ RESULTS on page 7-36.
Byte-2 Byte-3 Byte-4 Byte-5
Protocol identifier Field length
0000 hex 0004 hex
Always 0001 hex.
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.
Byte-6 Byte-7
Unit Function
identifier code
FF hex 10 hex
Description
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
Description
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
Byte-8 Byte-9 Byte-10 Byte-11
Register address Word count
9000F hex 0001 hex
Byte-8 Byte-9
Word count
0001 hex
Byte-8
Excep-
tion code
1 byte