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V600-H11-R 数据表(PDF) 21 Page - Omron Electronics LLC

部件名 V600-H11-R
功能描述  Non-contact Data Communications System
PDF  34 Pages
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制造商  OMRON [Omron Electronics LLC]
网页  http://www.omron.com/index3.html
标志 OMRON - Omron Electronics LLC

V600-H11-R 数据表(HTML) 21 Page - Omron Electronics LLC

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Electromagnetic Coupling RFID System
V600
21
■ Communications Time
• The communications time does not depend on the model of R/W
Head or Data Carrier, although communications times differ
between Data Carriers with and without batteries.
• The turn around time (TAT) is the total time required from the issu-
ance of a command from the host device (for example, a host com-
puter) until the reception of a response.
• The lower-level communications time does not include the host
communications; it is the time required for communications
between the R/W Head and Data Carrier. The lower-level commu-
nications time is used in the equation for the DC speed.
DC Speed = (Distance travelled in the transmission range)/
(Lower-level communications time)
Lower-level Communications Time with
Built-in-battery Data Carriers (Reference)
Calculation (Reference)
N is the number of processing bytes.
V600-D8KF04 (Battery-less)
Calculation (Reference)
N is the number of processing bytes.
Lower-level Communications Time with
Battery-less Data Carriers (Reference)
(Battery-less Models Excluding V600-
D8KF04)
Calculation (Reference)
N is the number of processing bytes.
TAT (Turn Around Time)
Lower-level communications time
Command
Response
RD001122
……………*
RDH1
……………*
Lower-level communications time
(ms)
READ
t = 1.8 N + 48.4
WRITE
t = 4.2 N + 86.5
Lower-level communications time
(ms)
READ
t = 1.8 N + 168.4
WRITE
t = 4.2 N + 206.5
1,000
800
600
400
200
0
1
50
100
150
200
250
300
Number of bytes
(Auto) Read
(Auto) Write
1,000
800
600
400
200
0
1
50
100
150
200
250
300
Number of bytes
(Auto)Read
(Auto)Write
R/W
Lower-level communications
time (ms)
Distance
priority mode
READ
t = 4.3 N + 64.6
WRITE
t = 8.7 N + 167.1
Time priority
mode
READ
t = 1.8 N + 79.0
WRITE
t = 7.1 N + 180.4
2,500
2,000
1,500
1,000
500
0
50
100
150
200
250
300
Number of bytes
(Auto) Read
(Auto) Write
Transmission distance priority mode
Transmission time priority mode
Q124-E1-03.fm Page 21 Tuesday, May 30, 2006 5:22 PM



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