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(a) Overhead time at execution of interrupt and fixed scan execution type programs
When calculating instruction execution time, add the overhead time given in the following table to the instruc-
tion execution time, which is described in (3).
Two kinds of overhead time (pre-start and program-end) need to be added to interrupt programs.
*1: Indicates the value when the QI60 is mounted on the slot 0 of the main base unit.
Table10.3 Pre-start overhead time for interrupt programs
CPU module
Fixed scan interrupt
(I28 to I31)
Multiple CPU synchronous
interrupt (I45)
Interrupt
*1
(I0 to I15) from QI60 or
interrupt (I50 to I127) from the
intelligent function module
Without
high-speed
start
With high-
speed start
Without
high-speed
start
With high-
speed start
Without high-
speed start
With high-speed
start
Q00UJCPU, Q00UCPU, Q01UCPU
55 s 35 s
--- ---
76 s 55 s
Q02UCPU
48 s 17 s
--- ---
60 s 31 s
Q03UDCPU, Q03UDECPU
47 s 17 s 46 s 16 s 54 s 22 s
Q04UDHCPU, Q06UDHCPU,
Q10UDHCPU, Q13UDHCPU,
Q20UDHCPU, Q26UDHCPU,
Q04UDEHCPU, Q06UDEHCPU,
Q10UDEHCPU, Q13UDEHCPU,
Q20UDEHCPU, Q26UDEHCPU
46 s 16 s 44 s 14 s 52 s 22 s
Table10.4 Program-end overhead time for interrupt programs
CPU module
Without high-
speed start
With high-speed
start
Q00UJCPU, Q00UCPU, Q01UCPU
28
s 15 s
Q02UCPU
26
s 7 s
Q03UDCPU, Q03UDECPU
26
s 7 s
Q04UDHCPU, Q06UDHCPU, Q10UDHCPU, Q13UDHCPU, Q20UDHCPU,
Q26UDHCPU, Q04UDEHCPU, Q06UDEHCPU, Q10UDEHCPU, Q13UDEHCPU,
Q20UDEHCPU, Q26UDEHCPU
26
s 7 s
Table10.5 Overhead time for fixed scan execution type programs
CPU module
Without high-
speed start
With high-speed
start
Q00UJCPU, Q00UCPU, Q01UCPU
92
s 60 s
Q02UCPU
73
s 25 s
Q03UDCPU, Q03UDECPU
73
s 24 s
Q04UDHCPU, Q06UDHCPU, Q10UDHCPU, Q13UDHCPU, Q20UDHCPU,
Q26UDHCPU, Q04UDEHCPU, Q06UDEHCPU, Q10UDEHCPU, Q13UDEHCPU,
Q20UDEHCPU, Q26UDEHCPU
72
s 23 s