Omron V680S-HMD63-PNT User Manual page 240

Section 11
Appendices
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
Command
Response
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
• Communication Option: Other than FIFO Repeat (With ID code check)
There are no differences between Communication speed: "normal" and "high".
Command
Read
Write (with verification)
Write (without verification)
• Communication Option: FIFO Repeat (With ID code check)
There are no differences between Communication speed: "normal" and "high".
Command
Read
Write (with verification)
Write (without verification)
RFID System
238
User's Manual
(PROFINET)
Command
Communications time
: 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
: The command that the Reader/Writer sends to the RF Tag.
: The response that the RF Tag returns to the Reader/Writer.
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
Communications time (ms)
N: No. of bytes processed
T= 1.3N + 28.4
T= 1.6N + 52.2
T= 1.3N + 48.7
Response
600
550
500
Write (with verification)
450
400
350
300
250
200
150
100
50
0
0 50 100 150
No. of bytes (byte)
600
550
500
450
400
350
Write (with verification)
300
250
200
150
100
50
0
0 50 100 150
No. of bytes (byte)
600
550
500
450
Write (with verification)
400
350
300
250
200
150
100
50
0
0 50 100 150
No. of bytes (byte)
Write (without verification)
Read
200 250 300
Write (without verification)
Read
200 250 300
Write (without verification)
Read
200 250 300