Mitsubishi 00JCPU User Manual page 493

1) Overhead time when local devices in the interrupt program are enabled
When SM777 (Enable/disable local device in interrupt program) is turned on, the time given in Table10.6 and
Table10.7 will be added to the overhead time given in Table10.3 and Table10.4.
Each n, N1, N2, and N3 in the table indicates the following:
• n: Number of local device points (unit: K words)
• N1: Number of devices that specified a local device
• N2: Number of word device points that specified a local device
• N3: Number of bit device points that specified a local device
CPU module
Q02CPU
Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU
Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU
Q12PRHCPU, Q25PRHCPU
CPU module
Q02CPU
Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU
Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU
Q12PRHCPU, Q25PRHCPU
Table10.6 When a local device file in the standard RAM is used
Additional time to the pre-start
overhead time for interrupt
programs (Table10.3)
(0.35
(0.15
Table10.7 When a local device file in a SRAM card is used
Additional time to the pre-start
overhead time for interrupt
programs (Table10.3)
(1.15
(0.85
CHAPTER10 CPU MODULE PROCESSING TIME
Additional time to the program-end
3
n 0.05 ) 10 s
+
3
n + 0.03 ) 10 s
Additional time to the program-end
3
n + 0.30 ) 10 s
3
n + 0.15 ) 10 s
overhead time for interrupt
programs (Table10.4)
3
(0.35 n + 0.05 ) 10 s
3
(0.15 n + 0.03 ) 10 s
overhead time for interrupt
programs (Table10.4)
3
(1.15 n + 0.30 ) 10 s
3
(0.85 n + 0.15 ) 10 s
10 - 9
1
10
3
4
5
6
7
8