Mitsubishi QJ71GP21-SX, Reference Manual

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7
- 5 7.2 Link Refresh Time
7
PROCESSING TIME
(3) Data link transfer time (for Universal model QCPU)
Universal model QCPUs transfer interlink data in several batches.
The following are the calculation formulas for the data link transfer time.
(a) Data link transfer time taken in one END
* 1 The number of words that can be transferred in one1 END (N) is restricted as follows:
N = Sequence scan time (under no interlink transmission parameter setting) ( s) × 0.05
(b) Data link transfer time required for transferring data of all the set points
L: Data link transfer time taken in one END
L1: Data link transfer time
LB: Total points for transfer source LB, which are set with interlink transmission parameters
LW: Total points for transfer source LW, which are set with interlink transmission parameters
n1: Number of lines where interlink transmission parameters are set
KM1, KM2, KM3 and KM4: Constants
Table 7.4 Constants (KM1, KM2)
CPU type
KM1(× 10
-3
) KM2(× 10
-3
)
Q02UCPU 120 11
Q03UD/
Q03UDECPU
34 4
Other than the
above
25 4
Table 7.5 Constant (KM3)
CPU type
KM3(× 10
-3
)
Network module installation location
Source (main base)
Target (main base)
Source (main base)
Target (extension base)
Source (extension base)
Target (main base)
Source (extension base)
Target (extension base)
Q02UCPU 0.76 1.27 1.37 1.79
Q03UD/
Q03UDECPU
0.73 1.27 1.37 1.77
Other than the
above
0.73 1.25 1.35 1.78
Table 7.6 Constant (KM4)
CPU type
KM4(× 10
-3
)
Network module installation location
Source (main base)
Target (main base)
Source (main base)
Target (extension base)
Source (extension base)
Target (main base)
Source (extension base)
Target (extension base)
Q02UCPU 25.00 25.20 25.20 25.50
Q03UD/
Q03UDECPU
22.10 22.50 22.70 23.10
Other than the
above
22.10 22.50 22.70 23.00
L
KM3 KM1 (KM2 n1) [ms]
*1
LB
16
LW
KM4
[ms]
L1
LB
LW
16