Omron V680-CA5D01-V2 User Manual page 138

1:N Protocol
Command
Command
Controller No.
code
×
×
E
@ 0
2 2
1 1
Communications
designation
Data designation
Antenna designation
UID
Read area start address
No. of bytes to read
Response
Response When the Read Data Consists of 2,048 or Fewer Characters
Command
Controller No. code
×
×
E
@ 0
2 2
1 1
Response When the Read Data Consists of More Than 2,048 Characters
Host device
Communi-
cations
Read area
designation
start address
@ 0 E R A/H 1/2
Controller
UID
No.
UID
Read data
Antenna
designation
Communi-
Data
cations
desig-
designation
nation UID
× × × × ...
R A/H 1/2
2 1 1 0 or 16
Specifies the method of communications with the Tag.
Refer to Communications Designation Function for details on the communications designation.
p. 103
Specifies the code format when sending the read data response.
"A": ASCII
"H": Hexadecimal
Specifies the Antenna with which to communicate.
"1": Antenna 1
"2": Antenna 2
A unique identifier used to identify Tags.
In the case of multi-access communications designations (MT/MR), the UID of the Tag that is
being written to is added to the data.
Specifies the start address of the area in the Tag from which data is to be read from in 4-digit
hexadecimal.
Setting range: 0000 to FFFF
H
Specifies the number of bytes to read from the Tag in 4-digit hexadecimal.
Up to 8,192 bytes can be read with one command.
Setting range: 0001 to 2000
H
• 1000 Byte Tags (V680-D1KP@@)
ASCII: 1000 bytes (1000 characters)
Hexadecimal: 1000 bytes (2000 characters)
• 8-/32-KB Tags (V680-D8KF68/-D32KF68)
ASCII: 8192 bytes (8192 characters)
Hexadecimal: 8192 bytes (16384 characters)
Antenna
Resend flag
desig-
nation
End code UID
× × × ...
R 0 0 0
2 1 1 0 or 16
* CR
No. of bytes
SOH
to read
SOH
SOH
SOH
Added when the ADD UID (US) command is set to add a UID, or when a multi-access communi-
cations designation (MT/MR) is specified.
The data read from the Tag.
The number of characters will be the same as the specified number of bytes to read for ASCII
data and twice that number for hexadecimal data.
Read area start
No. of bytes to read
address
× × × × × × ×
4
H
H
• 2000 Byte Tags (V680-D2KF@@)
ASCII: 2000 bytes (2000 characters)
Hexadecimal: 2000 bytes (4000 characters)
Read data
× × × × ... × ×
n
ID Controller
2,061 characters max. per frame
Fixed value
Controller No. ER 00 10
2,048 characters
Fixed value Controller No. Read data 2
Fixed value Controller No. Read data (n-1)
2,048 characters
Fixed value Controller No. Read data n
SECTION 5
Communications
Terminator
FCS
× × × × × *
CR
4 2 2
FCS Terminator
× × *
CR
2 2
2,048 characters
Read data 1 Frame 1
FCS CR
20 ms
Frame 2
FCS CR
:
Frame
FCS CR
(n-1)
FCS Frame n
*CR
RFID System
User's Manual
135