10
- 6
10.1 Scan Time
10.1.2 Time required for each processing included in scan time
10
CPU MODULE PROCESSING TIME
(a) Overhead time at execution of interrupt program/fixed scan execution type
program
Note10.3
Note3
The interrupt program/fixed scan execution type program includes overhead time.
Also, the interrupt program includes pre-start overhead time and program-end
overhead time.
When calculating the instruction execution time, add the following overhead time
to the above instruction execution time.
* 1 : Indicates the value when the QI60 is mounted on slot 0 of the main base unit.
Note3
Table10.3 Pre-start overhead time of interrupt program (B1)
CPU module
Fixed scan interrupt (I28 to 31) processing
Interrupt processing from
QI60 (I0 to 15)
*1
Without high-speed
start
With high-speed
start
Without high-speed
start
With high-speed
start
Q00JCPU 175 s 150 s 350 s 325 s
Q00CPU 145 s 125 s 285 s 265 s
Q01CPU 135 s 120 s 270 s 255 s
Q02CPU 190 s 85 s 205 s 100 s
Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU,
Q12PHCPU, Q25PHCPU,
Q12PRHCPU, Q25PRHCPU
85s 40s 90s 45s
Table10.4 Program-end overhead time of interrupt program (B2)
CPU module
Without high-
speed start
With high-speed
start
Q00JCPU 175 s 150 s
Q00CPU 145 s 125 s
Q01CPU 135 s 120 s
Q02CPU 180 s 75 s
Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU,
Q12PHCPU, Q25PHCPU, Q12PRHCPU, Q25PRHCPU
80 s 35 s
Table10.5 Overhead time of fixed scan execution type program
Note10.3
CPU module
Without high-
speed start
With high-speed
start
Q02CPU 380 s 230 s
Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU,
Q12PHCPU, Q25PHCPU, Q12PRHCPU, Q25PRHCPU
165 s 100 s
Basic
Note10.3
Since the Basic model QCPU cannot use fixed scan execution type programs, it is not necessary
to be conscious of the overhead time of the fixed scan execution type program.
Basic
Note10.3
Basic
Note10.3