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8-3
Section
Communications Time (Reference)
136
Read/Write Sync (Reference Values)
Writing
Reading
Number of bytes processed
Actual
communications
time (ms)
Writing
Reading
Number of pages processed
Calculation Formula
Operation
Actual communications time
(msec)
Read
T = 52.8N + 119.6
Write
T = 52.8N + 172.4
Note N: Number of pages processed
The actual communications time between the Controller and ID Tag with multi-
ple, simultaneous access mode varies with the operating conditions, such as the
number of ID Tags in the communications area and the ID code combination of
each ID Tag as well as the number of bytes to be processed.
The following table lists average values of communications time as reference
values on condition that the ID codes are used at random.
Number of ID Tags
8 bytes to be read (ms)
8 bytes to be written (ms)
5
579
873
10
1,191
1,547
15
1,857
2,275
20
2,523
3,002
30
3,853
4,455
50
6,344
7,192
Note
1. The provided TAT data is an example in which the V700-CD1D-V3 Control-
ler is used under the following conditions for host communications:
The data is continuously sent with no space between characters, a baud
rate of 9,600 bps, and a data length of 7 bits with 2 stop bits and even parity.
2. The number of bytes in TAT data is the number of code-specified bytes in
ASCII.
Actual Communications
Time in Multiple,
Simultaneous Access
Mode
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