Omron V680-CA5D01-V2 - Page 138

135
RFID System
User’s Manual
SECTION 5
V680 Commands
SECTION 5
Communications
 1:N Protocol
Response When the Read Data Consists of 2,048 or Fewer Characters
Response When the Read Data Consists of More Than 2,048 Characters
Communications
designation
Specifies the method of communications with the Tag.
Refer to Communications Designation Function for details on the communications designation.
p. 103
Data designation Specifies the code format when sending the read data response.
“A”: ASCII
“H”: Hexadecimal
Antenna designation Specifies the Antenna with which to communicate.
“1”: Antenna 1
“2”: Antenna 2
UID 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.
Read area start address 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
H to FFFFH
No. of bytes to read 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
H to 2000H
• 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)
• 2000 Byte Tags (V680-D2KF@@)
ASCII: 2000 bytes (2000 characters)
Hexadecimal: 2000 bytes (4000 characters)
UID 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.
Read data 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.
Command
code
Terminator
Antenna
designation
Controller No.
Communi-
cations
designation
Read area start
address
No. of bytes to read
Data
desig-
nation
××
××
ER
××
A/H 1/2
××
244
11
××
2
2
* CR
@
2
×
×
0
11
2
××
FCS
××
UID
××
0 or 16
...
Command
Response
Command
code
Terminator
End code
Antenna
desig-
nation
Resend flag
Controller No.
Read data
×
ER
...
×
00
××
22 n
2
* CR
0×
11
FCS
××
2
@
2
×
×
0
11
××
UID
××
0 or 16
...
2,061 characters max. per frame
ER
CR
CR
CR
10
00
SOH Controller No.
Fixed value
SOH Controller No.
SOH Controller No.
SOH Controller No.
FCS
FCS
FCS
FCS
*CR
Read data 1
Read data 2
Read data (n-1)
Read data n
2,048 characters
2,048 characters
Fixed value
Fixed value
Fixed value
2,048 characters
:
Frame 1
Frame 2
Frame
(n-1)
Frame n
20 m
s
Controller
No.
Communi-
cations
designation
Read area
start address
No. of bytes
to read
ER
A/H 1/2
* CR
@ 0
UID
Host device
ID Controller