Mitsubishi Electric MELSEC iQ-R Series User Manual page 711

Overhead time at execution of interrupt/fixed scan execution type program
This section describes each overhead time when each of the interrupt programs and fixed scan execution type programs is
executed.
The processing time for the interrupt program and fixed scan execution type program is as shown below.
Instruction processing time for each instruction + Overhead time + Each refresh processing time (when
setting)
■Overhead time when executing the interrupt program
The overhead time when executing the interrupt program includes the one before executing the interrupt program and the
other when the interrupt program finished.
• Overhead time before executing the interrupt program
Interrupt factor
Internal timer interrupt (I28 to I31)
Inter-module synchronous interrupt (I44)
Multiple CPU synchronous interrupt (I45)
High-speed internal timer interrupt 2 (I48), high-speed internal
timer interrupt 1 (I49)
Interrupt from module (I0 to I15, I50 to I1023)
• Overhead time when finishing the interrupt program
Interrupt factor
Internal timer interrupt (I28 to I31)
Inter-module synchronous interrupt (I44)
Multiple CPU synchronous interrupt (I45)
High-speed internal timer interrupt 2 (I48), high-speed internal
timer interrupt 1 (I49)
Interrupt from module (I0 to I15, I50 to I1023)
■Overhead time when executing the fixed scan execution type program
The following table lists the overhead times when executing the fixed scan execution type program.
Condition
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Condition
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Condition
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Saves/stores the file register (R) block number.
Not save/store the file register (R) block number.
Overhead time
37.9s
20.6s
Overhead time
19.5s
12.9s
25.4s
17.0s
24.2s
16.1s
25.8s
18.1s
19.1s
12.8s
Overhead time
16.0s
8.5s
19.0s
11.4s
18.7s
10.5s
19.4s
10.3s
15.7s
8.5s
APPX
Appendix 7 Processing Time
A
709