Omron V680-CA1D, Руководство пользователя, Страница: 101 / 113

Heat-resistive RFID System
User's Manual
S
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tion 6
Cha
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Ac
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O
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ting Conditions
Section 6
Appendices
99
Communications Time and Turn Around Time
• The TAT (Turn Around Time) includes the communications time.
• The communication time does not include communications with the host. The communications time
is the time required for communications between the Antenna and the Tag. This time is used for refer-
ence when calculating the movement speed for AUTO commands.
Example:
• Communications Time
• TAT
•
The TAT graph data shown here is an example for a V680-CA1D/CA2D Controller communicating with a host with a
baud rate of 9,600 bps, 1 start bit, data length of 7 bits, 2 stop bits, even parity, and no spaces between characters.
•
The number of TAT data bytes is the number of bytes when ASCII is specified as the code.
Communications time (ms) N: number of
processing bytes
TAT (ms) N: number of processing bytes
Read T = 1.4 N + 114 T = 2.6 N + 140
Write T = 2.7 N + 284 T = 3.9 N + 310
Command
Communications time
Response
32 1 96 64 160 128 224 192 256
Number of processing data bytes
Communications time (ms)
1500
1250
1000
750
500
250
0
Writing
Reading
32 1 96 64 160 128 224 192 256
Number of processing data bytes
1500
1250
1000
750
500
250
0
TAT (ms)
Writing
Reading