Mitsubishi MELSEC-Q Series User Manual page 214

5
PROCESSING TIME OF QCPU IN MULTIPLE CPU
SYSTEM
5
- 5 5.2 Factors for prolonged Scan Time
3) For Universal model QCPU
(Auto refresh time)
= (N1 + (No. of transmission word points)
(N3 + (No. of other CPUs)
• The number of received words is the sum of the numbers of words
transmitted by the other CPUs.
(Example) When No. of CPU is set to 4 and the host CPU is CPU No. 1.
The number of received words is the sum of the numbers of
words sent by CPUs No.2 to No.4.
• For the auto refresh using the multiple CPU high speed transmission area,
use values in Table5.5 for N1 to N5.
Table5.5 Auto refresh time (using multiple CPU high speed transmission area)
Basic model QCPU
Q02UCPU
Q03UDCPU, Q03UDECPU
Q04UDHCPU, Q06UDHCPU,
Q13UDHCPU, Q26UDHCPU,
Q04UDEHCPU, Q06UDEHCPU
Q13UDEHCPU, Q26UDEHCPU
• For the auto refresh using the CPU shared memory , use values in
Table5.5 for N1 to N5.
Table5.6 Auto refresh time (using CPU shared memory)
Basic model QCPU
Q02UCPU
Q03UDCPU, Q03UDECPU
Q04UDHCPU, Q06UDHCPU,
Q13UDHCPU, Q26UDHCPU,
Q04UDEHCPU, Q06UDEHCPU,
Q13UDEHCPU, Q26UDEHCPU
N2)) +
N4 + (No. of reception word points)
N1 N2 N3
- - -
6 s 0.207 s 2 s
6 s 0.183 s 2 s
N1 N2 N3
34 s 0.155 s 120 s
9 s 0.162 s 28 s
8 s 0.132 s 25 s
N5) (µs)
N4 N5
- -
9 s 0.393 s
9 s 0.327 s
N4 N5
30 s 0.420 s
21 s 0.410 s
20 s 0.410 s