Mitsubishi Q02CPU

10
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10.1 Scan Time
10.1.2 Time required for each processing included in scan time
10
CPU MODULE PROCESSING TIME
10.1.2 Time required for each processing included in scan time
The scan time is the sum of the processings and execution times shown in Section 10.1.1.
This section explains how to calculate the processing and execution times shown in
Section 10.1.1.
(1) I/O refresh time
The I/O refresh time is the time for refreshing I/O data to/from the following modules
mounted on the main base unit and extension base units.
• Input module
• Output module
• Intelligent function module (special function module)
Note10.1
Note1
Calculation method
Use the following expression to calculate the I/O refresh time.
(I/O refresh time) = (number of input points/16) N1 + (number of output points/
16) N2
Refer to Table10.1 for N1 and N2.
Remark
The applicable base unit changes depending on the CPU module.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
Note1
Table10.1 I/O refresh time
CPU module
N1 N2
Q3 B,
Q3 SB,
Q3 RB
Q5 B, Q6 B,
Q6 RB
QA1S6 B
Q3 B,
Q3 SB,
Q3 RB
Q5 B, Q6 B,
Q6 RB
QA1S6 B
Q00JCPU 2.05 s 2.95 s ---- 1.25 s 2.20 s ----
Q00CPU 2.00 s 2.75 s ---- 1.20 s 2.05 s ----
Q01CPU 1.95 s 2.70 s ---- 1.15 s 2.00 s ----
Q02CPU 2.2s 2.9s 4.3s 1.3s 2.1s 3.5s
Q02HCPU
Q06HCPU
Q12HCPU
Q25HCPU
1.7s 2.4s 3.7s 1.3s 2.1s 3.5s
Q12PHCPU
Q25PHCPU
1.7 s 2.4 s ---- 1.3 s 2.1 s ----
Q12PRHCPU
Q25PRHCPU
1.7 s ---- ---- 1.3 s ---- ----
Basic
Process Redundant
Note10.1Note10.1 Note10.1
The Basic model QCPU, Process CPU and Redundant CPU do not support the special function
modules.
Basic
Process Redundant
Note10.1 Note10.1Note10.1