Omron V780 Series, Руководство пользователя

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7 Modbus/TCP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-
6 V780 Co
mm
and
Detail
s
7
7-6
-2 Multia
ccess Co
mmunications Commands
 Function
This command specifies getting the results of reading data from the RF Tags in the communications
range.
To enable identifying the RF Tags that were read, the StoredPC and EPC code are attached to the
read data.
The number of results data from RF Tag communications stored in the Reader/Writer is decre-
mented when a command response is returned.
 Command Format
 Response Formats
• Normal Response
n: 6 to 132
GET MULTIACCESS DATA READ RESULTS
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 identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Register address Word count
X X 0000 hex 0006 hex FF hex 03 hex 9300 hex 2 bytes
Parameter Description
Register address The register address (9300 hex) that specifies getting the results of multiaccess
data reading
Word count Specify the total number of words starting from the number of RF Tags in the
response in 4-digit hexadecimal.
0003 to 0022 hex + Option size
• For details on option sizes, refer to
7-3 RF Communications Command Options
on page 7-10.
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8 Byte-10 Byte-11
Transaction identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Byte
count
Number of RF
Tags
X X 0000 hex 2 bytes FF hex 03 hex 1 byte 2 bytes
Byte-12 ... ... ... ... ... ... Byte-12+ n-1
Error code Read data Options
2 bytes 2 to 64 bytes 0 to 68 bytes
StoredPC EPC code Reception
level
Reader/Writer
Number
2 bytes 62 bytes 2 bytes 2 bytes
Parameter Description
Field length Gives the total number of bytes starting from the unit identifier in 4-digit hexadeci-
mal.
0009 to 0047 hex + Option size
• For details on option sizes, refer to
7-3 RF Communications Command Options
on page 7-10.