Omron V680S - Page 30

V680S Series
30
RF Tag Communication Time (for Reference Only)
The communication time is the time from when the Reader/Writer turns ON the RF signal until it receives the last bit of the response from the RF
Tag.
RF signal: The radio wave that the Reader/Writer transmits to the RF Tag.
The Reader/Writer turns ON this RF signal and then sends the command to start communications with the RF Tag.
When the communications end, the Reader/Writer turns OFF the RF signal.
Command: The command that the Reader/Writer sends to the RF Tag.
Response: The response that the RF Tag returns to the Reader/Writer.
V680S series
RF Tag (2k-byte Memory)
V680S-HMD6@-@@@:
V680S-D2KF6 @ (M) (Communications speed setting: High speed)
V680S-HMD6@-@@@:
V680S-D2KF6 @ (M) (Communications speed setting: Normal speed)
V680-D1KP66T-SP
V680S-HMD66-@@@ and V680-D1KP66T-SP
(Back Surface: Metal)
V680-D1KP58HTN
V680S-HMD64-@@@ and V680-D1KP58HTN
(Back Surface: Metal) (with Attachment, V680-A80)
V680S-HMD66-@@@ and V680-D1KP58HTN
(Back Surface: Metal) (with Attachment, V680-A80)
200
150
50
100
Y
X150100-50-100-150-200-250 500 200
Read
Write
100
80
20
40
60
Y
X
6040
−
20
−
40
−
60
−
80
−
100
20080
Read
Write
200
150
50
100
Y
X150100-50-100-150-200-250 500 200
Read
Write
Command
RF signal
Communications time
Response
Query
Communications time (ms)
N: No. of bytes processed
Read T = 0.4N + 17.4
Write (with verification) T = 1.0N + 51.9
Write (without verification) T = 0.7N + 35.2
Write (without verification)
Communications time [ms]
No. of bytes (byte)
450
400
350
300
250
200
150
100
50
0
0 50 100 150 200 250 300
Write (with verification)
Read
Query
Communications time (ms)
N: No. of bytes processed
Read T = 0.9N + 18.7
Write (with verification) T = 1.7N + 42.1
Write (without verification) T = 0.9N + 32.0
Communications time [ms]
No. of bytes (byte)
450
400
350
300
250
200
150
100
50
0
0 50 100 150 200 250 300
Write (with verification)
Write (without verification)
Read