Omron V680S Series User Manual page 229

RF Tag Communications Time (for Reference Only)
? Communications Time
Communications time is from the rise of the RF signal to the last bit of the response from the RF tag.
RF signal
RF signal : The radio wave that the Reader/Writer turns ON 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.
The communication time is approximately 200ms longer when enabling Communications Diagnosis function.
V680S-HMD6-PNT and V680-D1KP
There are no differences between Communication speed: "normal" and "high".
Command
Read
Write (with verification)
Write (without verification)
V680S-HMD6-PNT and V680-D8KF6
There are no differences between Communication speed: "normal" and "high".
Command
Read
Write (with verification)
Write (without verification)
Command
Communications time
Communications time (ms)
N: No. of bytes processed
T= 1.0N + 20.1
T= 1.8N + 45.2
T= 1.5N + 41.4
Communications time (ms)
N: No. of bytes processed
T= 1.0N + 19.7
T= 1.3N + 38.1
T= 1.0N + 34.3
Response
450
Write (with verification)
400
350
300
250
200
150
100
50
0
0 50 100 150
No. of bytes (byte)
450
400
350
Write (with verification)
300
250
200
150
100
50
0
0 50 100 150
No. of bytes (byte)
Section 8
Appendices
Write (without verification)
Read
200 250 300
Write (without verification)
Read
200 250 300
RFID System
227
User's Manual
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