10
CPU MODULE PROCESSING TIME
10.1 Scan Time
10.1.3 Factors that increase the scan time
10
- 13
9
Device Explanation
10
CPU Module Processing
Time
11
Procedure for Writing
Program to CPU Module
AppendicesIndex
(2) Use of local devices
Note10.8
Note9
When local devices are used, the following processing time shown in Table10.17 is
required.
*
1 : n indicates the number of program files.
(a) Scan time increased when local devices in subroutine program are made
available
When SM776 (setting of whether local devices are usable or not when the
subroutine program is called) is turned ON to make the local devices in the
subroutine program available, the scan time increases per call by the time
indicated in Table10.18 and Table10.19.
N : Number of local device points (Unit: k word)
N: Number of local device points (Unit: k word)
Note9
Table10.17 Local device setting: Processing time for 10k points
CPU module
Processing time
*1
Standard RAM
Q02CPU
3.47 + 0.05 n ms
Q02HCPU,Q06HCPU,Q12HCPU,Q25HCPU,
Q12PHCPU,Q25PHCPU,
Q12PRHCPU,Q25PRHCPU
15.20 + 0.21 n ms
SRAM card
Q02CPU
10.23 + 0.5 n ms
Q02HCPU,Q06HCPU,Q12HCPU,Q25HCPU,
Q12PHCPU,Q25PHCPU,
Q12PRHCPU,Q25PRHCPU
7.94 + 0.22 n ms
Table10.18 When local device file in standard RAM is used
CPU module
Increase of scan time when a
subroutine in the same file is
called
Increase of scan time when a
subroutine in another file is
called
Q02CPU
0.35 N + 0.05 ms 0.70 N + 0.10 ms
Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU,
Q12PHCPU, Q25PHCPU,
Q12PRHCPU, Q25PRHCPU
0.15 N + 0.03 ms 0.30 N + 0.05 ms
Table10.19 When local device file in SRAM card is used
CPU module
Increase of scan time when a
subroutine in the same file is
called
Increase of scan time when a
subroutine in another file is
called
Q02CPU
1.15 N + 0.30 2.30 N + 0.60
Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU,
Q12PHCPU, Q25PHCPU,
Q12PRHCPU, Q25PRHCPU
0.85 N + 0.15 1.65 N + 0.30
Basic
Note10.8
Since the Basic model QCPU cannot use local devices, it is not necessary to be conscious of the
processing time described on this page.
Basic
Note10.8
To Next Page
Loading...
