Omron V680 - 2, Product Manual, Page: 32 / 44

32
V680 Series
RFID System
TAT When Using an ID Controller (Reference Values)
TAT (Turn Around Time)
TAT refers to the total time required from the point at which a host device (such as a personal computer) starts sending a command until a
response is received.
1-Kbyte Memory ID Tag
V680-D1KP @ (used in combination with the V680-HS @@ Read/Write Antenna and V680-HA63A Amplifier Unit)
V680-D1KP58HT (used in combination with the V680-H01 Read/Write Antenna)
Note 1. These are the TAT values for a baud rate of 115,200 bps. For information on the TAT for baud rates other than 115,200 bps, refer to the
User's Manual .
2. The V680-H01 Read/Write Antenna cannot be used in high-speed mode.
3. When multi-access or FIFO is selected as the transmission option, the transmission time will be the same as in normal mode even when
the transmission speed is set to high-speed mode.
4. The value given for TAT data assumes that communications settings for the V680-CA5D01/02-V2 ID Controller are as follows:
Data length: 8 bits, Stop bits: 1, Parity: Odd.
In this example, communications are continuous, with no gaps between characters.
5. The number of bytes of TAT data is the number of bytes when ASCII is specified as the code.
Controller or ID Sensor
Unit transmission
speed setting
Command Write verification
setting
Number of bytes to
processed (byte)
TAT (ms) (See note 1.)
Normal mode Read --- 100 173
256 389
512 747
1,000 1,431
Write Enabled 100 280
256 621
512 1,184
1,000 2,258
Disabled 100 248
256 542
512 1,028
1,000 1,956
High-speed mode
(See notes 2 and 3.) Read --- 100 141
256 310
512 591
1,000 1,129
Write Enabled 100 243
256 537
512 1,023
1,000 1,951
Disabled 100 209
256 456
512 865
1,000 1,647
TAT = Command send time + ID Tag transmission time + response receipt time
Command send time: This is the time required for sending a command from the host
device to the Controller.
It varies depending on the communications speed and format.
ID Tag transmission time: This is the time required for transmission between the Read/Write
Antenna and the ID Tag.
Response receipt time: This is the time required for returning a response from the
Controller to the host device.
It varies depending on the communications speed and format.
RDA1 · · · · *CR
Response
TAT
RD001234 · · · *CR
ID Tag
transmission time
(Command)
For an ordinary command