50
Sect
ion 5
5.2 TAT (T
urn Aroun
d
T
ime
)
V700-L11
User's Manual
Section 5
Data Transaction Time (information only)
➁
IDRW head is connected via link unit-OMRON original 1:N protocol
When the Baud rate for communication between the upstream controller and link unit is A, the number
of characters in command is B, and that in response is C, then
∗
The above expressions are based on an assumption that the upstream controller continuously sends
data without inter-character spacing in command.
<Example of TAT calculation>
For an operation for reading a data for one page, where the Baud rate for communication with the
upstream controller is 38,400 (bps), the TAT can be calculated as follows:
Command
Responses
[SOH]01010000000004(check code) [CR]
[SOH]0100123456789ABCDEF (check code) [CR]
A=38400, B=18, C=24, and the transaction time is 0.114 (sec) from the calculation formula, then:
TAT = command transmission time + transaction time + response transmission time
Processing time
on link unit
Response
Response
Command
Command
Response
transmission time
Command
transmission time
1.6 msec
1.6m sec
Transaction
time
TAT
Upstream
controller
Link unit
IDRW head
(sec)
0016
.
0
9600
}
5
B
{
11
B
)
bits
(
10
(sec)
A
1
C
)
bits
(
10
(sec)
0016
.
0
9600
}
5
C
{
11
(sec)
A
1
(sec)
032
.
0
}
{
9600
}
10
C
B
{
11
A
}
C
B
{
10
TAT
transaction time
(characters)
(characters)
Command
transmission time
Response
transmission time
Bit time
Bit number
per character
Number of characters
in command
Bit time
Bit number
per character
Number of characters
in response
(sec)
165
.
0
1172
.
0
9600
352
38400
420
032
.
0
114
.
0
9600
}
10
24
18
{
11
38400
}
24
18
{
10
TAT